ASCO Series 300, 386, and 300SE Power Transfer Switches
Comprehensive overview of ASCO automatic and non-automatic power transfer switches, detailing their features, typical applications, technical specifications, dimensions, and ordering information for reliable emergency and standby power solutions.
ASCO Services: Start-Up, Commissioning, Service & Preventive Maintenance
ASCO Services, Inc. provides a wide range of technical services to users of automatic transfer switches in emergency and standby power systems. These services include comprehensive preventive maintenance programs, modifications, upgrades, and emergency repairs. Systems serviced range in complexity from a single automatic transfer switch to multiple transfer switches and engine generators.
ASCO Services is a wholly owned subsidiary and the exclusive OEM service arm of ASCO Power Technologies, the world's largest manufacturer of power transfer switching and control equipment. Serving the needs of ASCO's customers is a major focus; however, ASCO Services is also routinely called upon to perform regular maintenance and emergency repairs on equipment manufactured by others.
ASCO Services offers comprehensive maintenance agreements that detail the preventive care needed to keep emergency power systems ready to respond. A service agreement is an effective way to budget in advance and avoid unexpected expenditures. A 35-point checklist is utilized to assure critical systems and components are kept in top operating condition. These preventive programs can be customized for national accounts, permitting central corporate control of costs and scheduling. Periodic reports provide detailed information as to activity, maintenance performed, and corrective action.
ASCO Services deploys more than 75 service personnel strategically throughout the nation to provide 24-hour response in emergency situations. Each region is manned by experienced personnel who receive ongoing support and training in the newest equipment concepts, design, and controls. Because equipment can be utilized for a long number of years, field representatives also receive education on older designs. This knowledge can be invaluable in addressing total system concerns, evaluating problems, and providing solutions on site. Service vans are equipped with parts and advanced testing equipment that facilitate these on-the-spot repairs.
Contact ASCO Services at 1-800-800-ASCO.
Image: A white van with "ASCO SERVICES, INC." branding.
Power Outage Protection
Electrical power failures are common and can significantly impact businesses. These failures can occur unexpectedly due to various reasons such as lightning, power surges, blackouts, accidents, or equipment failure. To mitigate these risks, many businesses invest in emergency power backup systems, typically consisting of an engine generator and an Automatic Transfer Switch (ATS).
An ATS monitors the normal power supply and senses interruptions. When utility power fails, the ATS automatically starts the engine generator and transfers the load once the generator reaches proper voltage and frequency, typically within seconds. When utility power is restored, the ATS automatically switches the load back and, after a time delay, shuts down the engine. An Automatic Transfer Switch provides 24/7 protection.
Image: Electrical transmission towers against a dramatic sky.
ASCO Series 300 Power Transfer Switches: Typical Applications
The ASCO Series 300 Power Transfer Switch is designed for various critical applications where reliable power is essential.
Telecom
In the telecommunications industry, dependable service is crucial. Lost power means service interruptions and lost business. For remote cell sites, Automatic Transfer Switches are valuable resources. The Series 300, combined with ASCO's monitoring and control system, offers a cost-effective solution for remote monitoring and control of numerous sites.
Image: A cluster of telecommunication towers.
Commercial/Retail, Light Industrial
Electrical power failures can severely impact a retailer's bottom line, especially during peak shopping times. Beyond suspending operations, outages can cause safety issues, data loss, and damage to climate-controlled equipment. Installing a backup generator with an ASCO Series 300 Transfer Switch ensures continuous operation and prevents these losses.
Image: Interior of a modern shopping mall.
Municipal
For municipal governments, reliable emergency power is vital for public safety services like police, fire, and ambulance. An interruption in power can hinder emergency response. The ASCO Series 300 Transfer Switch ensures that backup generators are activated quickly, safeguarding critical community services.
Image: A generic municipal building facade.
Agriculture
Maintaining electrical power is essential for agricultural operations. A prolonged power outage can disrupt livestock management and production. The ASCO Series 300 Transfer Switch automatically transfers power to a backup generator, eliminating manual switching. It also automatically switches back to utility power once it's stabilized.
Image: A farm field with a barn and silo.
ASCO Series 300 Power Transfer Switches: Maximum Reliability & Excellent Value
The ASCO Series 300 Transfer Switch is backed by ASCO Power Technologies, a leader in transfer switch technology. Designed for automatic transfer of critical loads during power outages, each component is engineered for this specific purpose. Its rugged construction ensures years of reliability and can handle demanding situations like starting stalled motors and switching high inrush loads.
The modular, compact design of the ASCO Series 300 makes installation, inspection, and maintenance easy. All parts are front-accessible for convenient inspection of switch contacts.
Features
- Listed to UL 1008 standard for Transfer Switch Equipment and CSA standard C22.2.
- Meets NFPA 110 for Emergency and Standby Power Systems and the National Electrical Code (NEC) Articles 700, 701, and 702.
- Available in ratings from 30 through 3000 amps in a compact design.
- Available for 600 VAC, single or three phase.
- True double-throw operation: The single solenoid design is inherently interlocked, preventing contacts from stopping between sources or being in contact with both sources simultaneously.
UL Listed Withstand & Close-On Ratings
| Switch Ratings amps | When Used With Current Limiting Fuses | Maximum Voltage | When Used With Specific Circuit Breakers @ 480V/60Hz |
|---|---|---|---|
| 30 - 200 | 200,000 | 480v/60Hz | 22,000 |
| 230 | 100,000 | 480v/60Hz | 22,000 |
| 260, 400 | 200,000 | 480v/60Hz | 42,000 |
| 600,800,1000,1200 | 200,000 | 600v/60Hz | 65,000 |
| 1600, 2000 | 200,000 | 600v/60Hz | 85,000 |
| 2600, 3000 | 200,000 | 600v/60Hz | 100,000 |
Notes: 1. Current-limiting fuse should be Class J type through 400 amps; use Class L type above 400-amp fuse rating. 2. Refer to publication 1128 for specific manufacturer's breakers.
- The Series 300 ATS derives power from the source to which the load is being transferred, eliminating the danger of transferring to a dead source.
- Features an easy-to-read, flush-mounted control and display panel with LED indicators for switch position and source availability, including test and time-delay bypass switches.
- Includes a standard engine exerciser for weekly automatic testing of the engine generator set.
- Adjustable time-delay feature prevents activation during momentary utility power outages or generator dips.
- Supplied with solid neutral termination; optional switched neutral pole is available.
- Accessory kits are available.
- Available for immediate delivery.
- Now available for service entrance applications. Contact ASCO for assistance.
Image: ASCO Power Transfer Switch rated 200 amperes shown in a Type 3R enclosure.
ASCO Series 300 Power Transfer Switches: Designed to Fit Anywhere
The ASCO Series 300 product line offers the most compact design for automatic power transfer switches in the industry. This compact design, suitable for wall or floor mounting, ensures optimal space utilization in electrical closets where space is often at a premium.
Transfer switches up to 2000 amps are designed for complete front accessibility, allowing enclosures to be installed flush to the wall while enabling power cabling and connections from the front. Units rated 1600 and 2000 amps include standard cable entrance plates for optional side-mounted pull boxes, providing additional cable bending space.
Image: ASCO Power Transfer Switch rated 1000 amperes.
Image: ASCO Power Transfer Switch rated 200 amperes.
Image: ASCO Power Transfer Switch rated 400 amperes.
Image: ASCO Power Transfer Switch rated 2000 amperes shown in Type 3R enclosure.
Image: ASCO Power Transfer Switch rated 3000 amperes.
ASCO Series 386 Non-Automatic Power Transfer Switches
ASCO 386 non-automatic transfer switches are designed for applications where operating personnel are available and the load is not an emergency type requiring automatic transfer. The power-switching mechanism and controller are the same as those used in the ASCO Series 300. These switches are furnished with a momentary-type selector switch for manual transfer and retransfer, and can be arranged for remote control.
Electrical Features
- Listed under UL 1008 and CSA certified (UL listed through 480 VAC, CSA certified through 600 VAC).
- Door-mounted selector switch for local, manually initiated electrical control.
- Available in sizes from 30 through 3000 amps.
- Available for 600 VAC, 50 or 60 Hz.
- Rated for all classes of load transfer.
- 100% tungsten load ratings through 400 amps.
- Designed for emergency and standby applications.
- Features the same withstand and close-on rating as the Series 300.
Standard Selectable Control Features
- Inphase monitor for transferring motor loads between live sources without intentional off time, preventing inrush currents from exceeding normal starting levels.
- Selective load disconnect with adjustable time delay (0-20 seconds) prior to transfer and reset.
- High/Low nominal voltage setting for adjusting to reduced voltage conditions.
- 60 Hz or 50 Hz selectable switch.
- Single/Three-phase selectable switch.
Control Features
- Switch position indicating signal lights.
- One auxiliary contact closed when connected to normal, and one closed on emergency (standard feature 14A/14B).
Optional Accessories
- 6Q Key-operated, momentary source selector switch.
- 9C, 9D Source availability lights for local indication of power source status.
- Accessory 14AA/14BA auxiliary contacts for main contact position indication.
- 72A Communications interface module (RS-485) for local or remote communications.
- Special Enclosures: Type 3R (Raintight), Type 4 (Weatherproof), Type 12 (Oil Tight).
Image: ASCO 386 400 Amp Type 1 Enclosure with optional accessories 9C, 9D Source Availability Lights.
Image: Control and Display Panel.
ASCO Series 300SE Service Entrance Power Transfer Switch
The ASCO Service Entrance Power Transfer Switch combines automatic power switching with a utility circuit breaker as a disconnect device, meeting National Electrical Code requirements for service entrance equipment. These switches are typically installed where there is a single utility feed and a single emergency power source, with the circuit breaker serving as the utility disconnect.
The ASCO 300SE uses the same reliable transfer switching mechanism and controller as the Series 300 platform but also includes a utility circuit breaker for disconnect purposes. It connects both neutral and ground conductors.
Product Features
- Suitable for use as service entrance equipment.
- Listed to UL 891 standard for Dead-Front Switchboards and meets NEC requirements.
- Listed to UL 1008 for total system loads.
- Available in sizes from 70 through 3000 amps.
- Available for 600 VAC, 50 or 60Hz, single or three phase.
- Circuit breaker disconnect on the normal for isolation.
- Disconnect link on Neutral and Ground.
- Silver plated copper ground and neutral bus.
- Solderless screw type terminals for external power connections.
- Ground fault trip protection provided on sizes of 1000 amperes and above.
- UL approved Type 1 enclosure.
- Available with solid or switched neutral.
- Optional TVSS available on Normal, Emergency, and/or Load.
Image: ASCO Service Entrance Power Transfer Switch rated 3 Pole 2000 amperes shown in Type 3R secured double door enclosure with solid neutral.
Image: Rear view showing ground fault protection with ground and neutral disconnect links.
Diagram: One-line diagram of a typical service entrance rated transfer switch available in Solid or Switched Neutral.
Dimensions & Shipping Weights
Detailed dimensions and shipping weights for various ASCO Series 300, 386, and 300SE transfer switches are provided below.
UL Type 1 Enclosure Dimensions & Shipping Weights
| Switch Rating amps | Phase Poles | Neutral Code | Dimensions, In. (mm) | Approx. Shipping Weight Lb. (kg) | ||
|---|---|---|---|---|---|---|
| Width | Height | Depth | ||||
| 70, 104, 150, 200 (*series 386 only) |
2 | A | 17 1/2 (445) | 31 (787) | 11 5/8 (295) | 69 (32) |
| 70, 104, 150, 200 | 2 | B | 17 1/2 (445) | 31 (787) | 11 5/8 (295) | 73 (33) |
| 70, 104, 150, 200 | 3 | A | 17 1/2 (445) | 31 (787) | 11 5/8 (295) | 73 (33) |
| 70, 104, 150, 200 | 3 | B | 17 1/2 (445) | 31 (787) | 11 5/8 (295) | 75 (34) |
| 230, 260, 400 | 2 | A | 18 (457) | 48 (1219) | 13 (330) | 100 (45) |
| 230, 260, 400 | 2 | B7 or C | 18 (457) | 48 (1219) | 13 (330) | 110 (50) |
| 230, 260, 400 | 3 | A | 18 (457) | 48 (1219) | 13 (330) | 100 (50) |
| 230, 260, 400 | 3 | B7 or C | 18 (457) | 48 (1219) | 13 (330) | 120 (55) |
| 600, 800, 1000 | 2 | A | 34 (864) | 72 (1829) | 20 (508) | 450 (204) |
| 600, 800, 1000 | 2 | B | 34 (864) | 72 (1829) | 20 (508) | 475 (217) |
| 600, 800, 1000 | 3 | A | 34 (864) | 72 (1829) | 20 (508) | 475 (217) |
| 600, 800, 1000 | 3 | B | 34 (864) | 72 (1829) | 20 (508) | 500 (228) |
| 1200 | 2 | A | 38 (965) | 87 (2210) | 24 (610) | 685 (312) |
| 1200 | 2 | B | 38 (965) | 87 (2210) | 24 (610) | 705 (321) |
| 1200 | 3 | A | 38 (965) | 87 (2210) | 24 (610) | 705 (321) |
| 1200 | 3 | B | 38 (965) | 87 (2210) | 24 (610) | 725 (328) |
| 1600, 20001,6 | 3 | A | 38 (965) | 87 (2210) | 24 (610) | 925 (419) |
| 1600, 20001,6 | 3 | B | 38 (965) | 87 (2210) | 24 (610) | 975 (441) |
| 2600, 30002 | 3 | A | 38 (965) | 91 (2311) | 60 (1524) | 1700 (771) |
| 2600, 30002 | 3 | B | 38 (965) | 91 (2311) | 60 (1524) | 2135 (969) |
Series 300SE External Power Connections
| Switch Rating amps | Ranges of AL-CU Wire Sizes (Unless Specified Copper Only) |
|---|---|
| 70, 104, 150, 200*, 225 | One #14 to 4/0 AWG |
| 250, 400 | Two 1/0 AWG to 250 MCM or One #4 AWG to 600 MCM |
| 600 | Two 1/0 AWG to 600 MCM |
| 800, 1000, 1200 | Four 1/0 to 600 MCM |
| 1600, 2000 | Six 1/0 to 600 MCM |
| 2600 | Twelve 3/0 to 600 MCM |
| 3000 | Twelve 3/0 to 600 MCM |
Note: All Series 300 switches are furnished with a solid neutral plate (unless switched neutral configuration is specified) and terminal lugs. Specify A in catalog number to order a neutral plate on the series 386 switches. * 200 and 230 amp rated switches for use with copper cable only.
Series 300SE Dimensions & Shipping Weights (UL Type 1 Enclosure)
| Switch Rating amps | Phase Poles | Neutral Code | Dimensions², In. (mm) | Approx. Shipping Weight² Lb. (kg) | ||
|---|---|---|---|---|---|---|
| Width | Height | Depth | ||||
| 70, 104 ,150, 200, 225 | 2 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 400 (185) |
| 70, 104 ,150, 200, 225 | 2 | B | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 70, 104 ,150, 200, 225 | 3 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 70, 104 ,150, 200, 225 | 3 | B | 32 (812) | 50 1/4 (1275) | 13 (330) | 416 (192) |
| 250, 400 | 2 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 400 (185) |
| 250, 400 | 2 | C | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 250, 400 | 3 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 250, 400 | 3 | C | 32 (812) | 50 1/4 (1275) | 13 (330) | 416 (192) |
| 6001, 8001 | 2 | A | 38 (965) | 91 (2310) | 28 (711) | 800 (370) |
| 6001, 8001 | 2 | B | 38 (965) | 91 (2310) | 28 (711) | 820 (378) |
| 6001, 8001 | 3 | A | 38 (965) | 91 (2310) | 28 (711) | 820 (378) |
| 6001, 8001 | 3 | B | 38 (965) | 91 (2310) | 28 (711) | 846 (390) |
| 10001, 12001 | 2 | A | 38 (965) | 91 (2310) | 48 (1218) | 1085 (501) |
| 10001, 12001 | 2 | B | 38 (965) | 91 (2310) | 48 (1218) | 1105 (510) |
| 10001, 12001 | 3 | A | 38 (965) | 91 (2310) | 48 (1218) | 1105 (510) |
| 10001, 12001 | 3 | B | 38 (965) | 91 (2310) | 48 (1218) | 1134 (523) |
| 16001, 20001 | 3 | A | 38 (965) | 91 (2310) | 48 (1218) | 2590 (1198) |
| 16001, 20001 | 3 | B | 38 (965) | 91 (2310) | 48 (1218) | 2640 (1218) |
| 26001, 30001 | 3 | A | 38 (965) | 91 (2310) | 60 (1523) | 4590 (2118) |
| 26001, 30001 | 3 | B | 38 (965) | 91 (2310) | 60 (1523) | 4655 (2148) |
Note: 1. Unit is designed for top and bottom cable entry for all services and load. 2. Enclosures for 600 - 3000 amps are freestanding. 3. Consult ASCO for type 3R, 4 and 12 enclosure weights and dimensions. 4. When temperatures below 32° F can be experienced, special precautions should be taken, such as the inclusion of strip heaters, to prevent condensation and freezing of this condensation. This is particularly important when environmental enclosures (Type 3R, 4 & 12) are ordered for installation outdoors. See Optional Accessories page for space heater options (acc. 44G).
Ordering Information
ASCO Series 300SE Transfer Switches
To order an ASCO Series 300SE Power Transfer Switch, complete the following catalog number: 3AUS + B + 3 + 400 + N + 1 + X + C + 11CD + 240 V/60
| Product Code | Neutral Code | Phase Poles | Amperes Continuous Rating | Voltage Code | Controller Options | Enclosure | Optional Accessories | Specific Volt & Freq |
|---|---|---|---|---|---|---|---|---|
| 3AUS | A Solid Neutral | 2 poles, 1 | 70, 104, 150, 2002, 225, 250, 400, 600, 800, 1000, 1200, 1600, 2000 | A4 115 B4 120 C 208 D 220 E 230 F 240 H 380 J 400 K 415 L 440 M 460 N 480 Q 575 R 600 |
Insert X If optional accessories are required | Blank Open Type Type 1 (Standard) Type 3R Secured Enclosure Type 43 Secured Enclosure Type 123 Secured Enclosure |
11BG Programmable Engine Exerciser 14AA/14BA Auxiliary Contacts (2 sets) 44G Strip Heater w/Thermostat 72A Communication Interface Module 73A Surge Suppressor |
This information is necessary to allow correct control settings prior to shipment |
| B1 Switched Neutral | 3 poles, 3 | 2600, 3000 |
Note: 1. Specify neutral code C for 225, 250 and 400 amperes only. 2. Available 70-1000 ampacity. Use Type 3R for 1200-3000 amp applications. 3. 115-120 volt available 150-400 amps only.
ASCO Series 300 Transfer Switches Extended Warranties
| Catalog No. | Description |
|---|---|
| 2EXW300SE | Two-Year Extended Warranty (Parts & Labor) |
| 3EXW300SE | Three-Year Extended Warranty (Parts & Labor) |
| 4EXW300SE | Four-Year Extended Warranty (Parts & Labor) |
| 5EXW300SE | Five-Year Extended Warranty (Parts & Labor) |
ASCO Series 300 Microprocessor Controller
The ASCO Microprocessor Controller is used with all sizes of Power Transfer Switches. It represents the most reliable microprocessor controller in the industry and includes, as standard, all of the voltage, frequency, control, timing, and connectivity functions required for most emergency and standby power applications.
Image: ASCO Series 300 Microprocessor Controller.
Image: Door-Mounted Control & Display Panel.
Voltage & Frequency Sensing
- Adjustable three-phase, close-differential voltage sensing on normal source.
- Normal source pickup voltage is adjustable to 95% of nominal; drop-out is adjustable from 70% to 90% of nominal.
- Frequency sensing on emergency source. Pickup at 95% and dropout at 85% of nominal.
Time Delays
- Adjustable time delay to override momentary normal source outages to delay all transfer switch and engine-starting signals.
- Transfer to emergency time delay: Adjustable from 0 to 5 minutes for controlled timing of load transfer to emergency.
- Retransfer to normal time delay: Adjustable to 30 minutes.
- Five-minute unloaded running time delay for emergency engine generator cool down.
- Four-second time delay to ignore momentary voltage and frequency transients during initial genset loading.
Standard Selectable Features
- Inphase monitor to transfer motor loads, without any intentional off time, to prevent inrush currents from exceeding normal starting levels.
- Engine exerciser to automatically test backup generator each week. Includes control switch for testing with or without load.
- Selective load disconnect, double-throw contact to operate at an adjustable 0 to 20 second adjustable time delay prior to transfer and reset 0 to 20 seconds after transfer.
- 60 Hz or 50 Hz selectable switch.
- Three-phase/single-phase selectable switch.
Remote Control Features
Terminal provisions for connecting:
- Remote test switch.
- Remote contact for test or for peak shaving applications. Circuit will be automatically bypassed if emergency source fails.
- Inhibit transfer to emergency.
- Remote time-delay bypass switch.
Performance Features
- 600 volt spacing per UL and CSA standards.
- Interfacing relays are industrial grade, plug-in type with dust covers.
- Meets or exceeds the requirements for Electromagnetic Compatibility (EMC).
- ANSI C37.90A/IEEE472 Voltage Surge Test
- NEMA ICS-109.21 Impulse Withstand Test
- Digital circuitry isolated from line voltages
- IEC 801-2 Electrostatic discharge (ESD) immunity
- ENV50140 and IEC 803-1: Radiated electromagnetic field immunity
- IEC 801-4 Electrical fast transient (EFT) immunity
- ENV50142 Surge transient immunity
- ENV50141: Conducted radio-frequency field immunity
- EN55011: Group 1, Class A conducted and radiated emissions
- Optically isolated RS-485 Serial Port
- EN61000-4-11 voltage dips and interruptions immunity
Image: Microprocessor Controller with labels for Battery, Retransfer Time Delay, Transfer to Emergency Time Delay, Serial Communication Port, Dip Switches, and Customer Control Interfaces.
ASCO Series 300 ATS Optional Accessories
A variety of optional accessories are available to enhance the functionality of ASCO Series 300 ATS units.
Accessory 11BG: Programmable Engine Exerciser
Provides weekly or biweekly operation, with contacts for normal and emergency source availability. Features a 7-day or 14-day time base with a digital readout display.
Image: Programmable Engine Exerciser with Source Availability Contacts (Accessory 11BG).
Accessory 14AA/14BA: Auxiliary Contacts
Indicates position of main contacts (two for normal, two for emergency).
Accessory 44A: Strip Heater
With thermostat for extremely cold areas to prevent condensation and freezing. Requires external 120-volt power source.
Accessory 44G: Strip Heater
With thermostat, wired to load terminals for various voltage ranges (208-240, 360-380, 460-480, 550-600 volts). Contains wiring harnesses for all transfer switch sizes.
Image: Strip Heater Kit (Accessory 44G).
Accessory 72A: Communications Interface Module
(RS-485) Allows local or remote communications with ASCO PowerQuest® VPi or SiteWeb™™ communication products.
ASCO Pulsar® 450 High-Performance Surge Suppressor
Provides unparalleled protection from power surges and transients using computer-matched metal oxide varistors (MOVs). Features a unique four-cavity sand-packed housing, UL1449, UL1283, and CSA listed. Available as a separate product for customer mounting.
Image: Pulsar 450 Surge Suppressor.
Field Conversion Kits for Series 300 Transfer Switches
| Kit No. | Description |
|---|---|
| K629830 | Engine Exerciser and source availability contacts (Acc. 11BG) |
| K613127-001 | Strip Heater Kit (125 watt) 120 volt (Acc. 44A) |
| K613127-002 | Strip Heater Kit (125 watt) 208-480 volt (Acc. 44G) |
| K609027 | Cable Pull Box (1600-2000 amp) |
| K473872-001 | 6 FT Extension Harness* |
* For 30-200 Amp switches only, not available for 300SE.
Ordering Information for ASCO Series 300 & 386 Transfer Switches
ASCO Series 300 Power Transfer Switch
To order an ASCO Series 300 Power Transfer Switch, complete the following catalog number: 300 + B + 3 + 600 + N + 1 + X + C + 11CD + 480 V 60 Hz
| Product Code | Neutral Code | Phase Poles | Amperes Continuous Rating | Voltage Code | Controller Options | Enclosure | Optional Accessories | Specific Volt & Freq |
|---|---|---|---|---|---|---|---|---|
| 300 | A Solid Neutral | 2 poles, 1 | 30, 70, 104, 150, 200, 230, 260, 400, 6004, 8004, 10004, 12004, 1600, 2000 | A3 115 B3 120 C 208 D 220 E 230 F 240 H 380 J 400 K 415 L 440 M 460 N 480 Q 575 R 600 |
Insert X If optional accessories are required | Blank Open Type Type 1 (Standard) Type 3R Enclosure Type 4 Enclosure2 Type 12 Enclosure2 Type 3R Secure Enclosure |
11BG Programmable Engine Exerciser 14AA/14BA Auxiliary Contacts (2 sets) 44A, 44G Strip Heater w/Thermostat 72A Comm Interface Module |
This information is necessary to allow correct control settings prior to shipment |
| B1 Switched Neutral | 3 poles, 3 | 26004, 30004 |
ASCO Series 386 Transfer Switch
To order an ASCO Series 386 Transfer Switch, complete the following catalog number: 386 + B + 3 + 600 + N + 1 + X + C + 9C/9D + 480 V 60 Hz
| Product Code | Neutral Code | Phase Poles | Amperes Continuous Rating | Voltage Code | Controller Options | Enclosure | Optional Accessories | Specific Volt & Freq |
|---|---|---|---|---|---|---|---|---|
| 386 | A Solid Neutral | 2 poles, 1 | 30, 70, 100, 150, 200, 230 260, 400, 6004, 8004, 10004, 12004, 1600, 2000 | A3 115 B3 120 C 208 D 220 E 230 F 240 H 380 J 400 K 415 L 440 M 460 N 480 Q 575 R 600 |
Insert X If optional accessories are required | Blank Open Type Type 1 (Standard) Type 3R Enclosure Type 4 Enclosure2 Type 12 Enclosure2 Type 3R Secure Enclosure |
6Q Key-Operated Control 9C/9D Source Availability Lights 14AA/14BA Auxiliary Contacts 72A Comm Interface Module All Accessories |
This information is necessary to allow correct control settings prior to shipment |
| B1 Switched Neutral | 3 poles, 3 | 2000, 3000* |
Note: 1. Specify neutral code C for 260 and 400 amperes only. 2. Available 30-1000, and 1600 amps. Use Type 3R for 1200, 2000, 2600 and 3000 amp applications. 3. 115-120 volt available 30-400 amps only. For other voltages contact ASCO. 4. 600-1200 amp only available in secure type 3R enclosure. Secure type provided as standard for 2600-3000 amp.
Extended Warranties for Series 300 Transfer Switches
| Catalog No. | Description |
|---|---|
| 2EXW300 | Two-Year Extended Warranty (Parts & Labor) |
| 3EXW300 | Three-Year Extended Warranty (Parts & Labor) |
| 4EXW300 | Four-Year Extended Warranty (Parts & Labor) |
| 5EXW300 | Five-Year Extended Warranty (Parts & Labor) |
ASCO Series 300 Power Monitoring & Control
ASCO Connectivity Solutions, including ASCO PowerQuest® and SiteWeb™™ communication products, allow for the monitoring and control of power transfer switches in Emergency or Standby Power Distribution Systems. Local Area Networks and Remote networks are supported with single or multiple points of access, and web-enabled communications allow access from anywhere in the world.
Features
- Monitors and Controls Power Transfer Switches and Engine Generators
- Monitors Normal and Emergency Voltages and Frequency
- Indicates Transfer Switch Position and Source Availability
- Provides Transfer and Retransfer of Loads for System Testing
- View Normal and Emergency Voltage and Frequency Settings
- View Transfer Switch Time-Delay Settings
- Provides Transfer Switch Rating and Identification
- Automatic Paging Notifies Personnel, by E-mail or Pager, of Selected System Alarms
- View Current, Power and Power Factor with ASCO Power Managers Connected to the System
Image: A person looking at a control panel displaying ASCO PowerQuest ATS status.
Communication Systems: PowerQuest® VPi and SiteWeb™
PowerQuest® VPi is a PC-based software package that, when combined with ASCO Communication Interface Module (Acc 72A), ASCO 5120 Telephone Interface Module, and ASCO 5200 Series Power Manager, provides an economical communication system for monitoring and control of power transfer switches and engine generators. The local RS-485 network supports up to 32 power transfer switches and four engine generators. Analog phone connection and ASCO telephone interface module allow direct dial-up monitoring and control of remote locations. The ASCO Power Manager offers current power and power factor readings and a programmable KW set point for peak shaving operations.
Diagram: Network diagram illustrating PowerQuest® VPi system components including Computer, TIM, Power Manager, and ATS units.
SiteWeb™™ is a client-server application that requires no client software installation. Combined with the ASCO Communication Interface Module (Acc 72A), ASCO 5500 Series Thin Web Server, and ASCO 5200 Series Power Manager, it offers a comprehensive Intranet and Internet communication system for monitoring and control of power transfer switches and engine generators. The SiteWeb™™ system allows multiple client access, local or remote, and supports up to 64 power transfer switches and eight engine generators. Automatic paging is provided for all alarm signals.
Diagram: Network diagram illustrating SiteWeb™™ system components including Remote Computer, Local Computer, Hub, Firewall, TWS, ISP, Power Manager, and ATS units.
Communication Products
PowerQuest® VPi vs. SiteWeb™™
| Feature | PowerQuest VPi 32.15 | SiteWeb™™ |
|---|---|---|
| Number of Monitored/Controlled Power Transfer Switches | 32 | 64 |
| Number of Monitored/Controlled Gensets | 4 | 8 |
| Web Access | No | Yes |
| Monitor Multiple Sites | Yes | Yes |
| Multiple Client Access | No | Yes |
| Client Software Required | Yes | No |
| Email / Paging upon Alarms | No | Yes |
Communication Interface Module (Acc 72A)
Allows local, remote, or web-enabled communications with ASCO PowerQuest® VPi or SiteWeb™™ products. An accessory 72A is required on each power transfer switch.
Image: ASCO Communication Interface Module.
5100 Series Telephone Interface Module (for use with PowerQuest® VPi)
Allows users to dial directly into their ASCO communication network for monitoring and/or control. Connects via RS-485 and a phone port. Also includes an RS-232 connector to function as a dialing modem. Supplied with a 120 VAC to 18 VDC UL approved, class 2 power supply.
Image: ASCO Telephone Interface Module.
5500 Series Thin Web Server (for use with SiteWeb™ products)
Allows monitoring and control of transfer switches and engine generators over the Internet or an Intranet. Transmits alarm messages and can be accessed from home computers or any location with internet service.
Image: Thin Web Server.
5200 Series Power Manager (available as a stand-alone product only)
A microprocessor metering device for transfer switch applications, providing real-time measurements of single and three-phase power systems. It measures voltage and phase currents to calculate power and energy. Measurements can be displayed locally or remotely via PowerQuest® or SiteWeb™™. It can also collect data using auxiliary contact inputs. Features eight digital input and four digital outputs.
Image: ASCO 5200D Series Power Manager.
Communications Products for Series 300 Transfer Switches
| Description | Acc. Option | Catalog No. |
|---|---|---|
| Communication Interface Module | 72A | - |
| Telephone Interface Module for Remote Monitoring* | - | 5120 |
| Power Manager with Display* | - | 5200D |
| Thin Web Server* | - | 5510E |
| Thin Web Server with Modem* | - | 5510M |
| PowerQuest VPi Software Package* | - | VP i 32.15 |
*Note: These products are available as separate items only. They can be ordered by catalog numbers shown in above chart.
ASCO Series 300 Power Transfer Switches: Dimensions & Shipping Weights
UL Type 1 Enclosure (Dimensional data is approximate and subject to change. Certified dimensions available upon request.)
| Switch Rating amps | Phase Poles | Neutral Code | Dimensions², In. (mm) | Approx. Shipping Weight² Lb. (kg) | ||
|---|---|---|---|---|---|---|
| Width | Height | Depth | ||||
| 70, 104 ,150, 200, 225 | 2 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 400 (185) |
| 70, 104 ,150, 200, 225 | 2 | B | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 70, 104 ,150, 200, 225 | 3 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 70, 104 ,150, 200, 225 | 3 | B | 32 (812) | 50 1/4 (1275) | 13 (330) | 416 (192) |
| 250, 400 | 2 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 400 (185) |
| 250, 400 | 2 | C | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 250, 400 | 3 | A | 32 (812) | 50 1/4 (1275) | 13 (330) | 408 (188) |
| 250, 400 | 3 | C | 32 (812) | 50 1/4 (1275) | 13 (330) | 416 (192) |
| 6001, 8001 | 2 | A | 38 (965) | 91 (2310) | 28 (711) | 800 (370) |
| 6001, 8001 | 2 | B | 38 (965) | 91 (2310) | 28 (711) | 820 (378) |
| 6001, 8001 | 3 | A | 38 (965) | 91 (2310) | 28 (711) | 820 (378) |
| 6001, 8001 | 3 | B | 38 (965) | 91 (2310) | 28 (711) | 846 (390) |
| 10001, 12001 | 2 | A | 38 (965) | 91 (2310) | 48 (1218) | 1085 (501) |
| 10001, 12001 | 2 | B | 38 (965) | 91 (2310) | 48 (1218) | 1105 (510) |
| 10001, 12001 | 3 | A | 38 (965) | 91 (2310) | 48 (1218) | 1105 (510) |
| 10001, 12001 | 3 | B | 38 (965) | 91 (2310) | 48 (1218) | 1134 (523) |
| 16001, 20001 | 3 | A | 38 (965) | 91 (2310) | 48 (1218) | 2590 (1198) |
| 16001, 20001 | 3 | B | 38 (965) | 91 (2310) | 48 (1218) | 2640 (1218) |
| 26001, 30001 | 3 | A | 38 (965) | 91 (2310) | 60 (1523) | 4590 (2118) |
| 26001, 30001 | 3 | B | 38 (965) | 91 (2310) | 60 (1523) | 4655 (2148) |
Note: 1. Unit is designed for top and bottom cable entry for all services and load. 2. Enclosures for 600 - 3000 amps are freestanding. 3. Consult ASCO for type 3R, 4 and 12 enclosure weights and dimensions. 4. When temperatures below 32° F can be experienced, special precautions should be taken, such as the inclusion of strip heaters, to prevent condensation and freezing of this condensation. This is particularly important when environmental enclosures (Type 3R, 4 & 12) are ordered for installation outdoors. See Optional Accessories page for space heater options (acc. 44G).
