ABB TruONE™ ATS: The World's First True Automatic Transfer Switch

A critical breakthrough for critical power, engineered for seamless integration and ultimate reliability.

Introduction to TruONETM ATS

Introducing the TruONETM ATS from ABB, a revolutionary purpose-built automatic transfer switch that integrates switch and controller into one seamless unit. Performance tested beyond standard requirements, TruONETM ensures the steady delivery of critical power at all times. Its self-contained design minimizes wires and connections, speeding installation and enhancing reliability. Predictive maintenance and modular components reduce downtime and service costs, while advanced connectivity prepares it for the future. Uniquely, TruONETM allows emergency manual operation under load for immediate power restoration during equipment malfunctions.

ABB received the Global New Product Innovation Award for its TruONETM ATS.

Key Advantages of TruONETM ATS

The TruONETM ATS offers a comprehensive set of advantages:

01 Detachable HMI

Features three levels of control to meet diverse customer requirements. The Human-Machine Interface (HMI) can be detached for flexible mounting.

Visual Description: An image shows the detachable HMI unit with its screen and controls. Another visual illustrates the all-in-one concept where the controller is integrated into the switch unit, simplifying wiring and installation.

02 All-in-one Concept

This integrated design ensures easy and fast installation.

Easy to Install

Reduces installation time by up to 80%. Unlike traditional ATS solutions requiring multiple components and numerous wires, TruONETM integrates the controller and detachable HMI. It can be installed with a single wire using standard enclosures, significantly cutting down setup and testing time.

Safety and Protection

Reduces the risk of operator injury. TruONETM enables emergency manual operation, even under load, without opening the panel door when the HMI is mounted to the ATS frame. Detaching the HMI for door mounting offers panel designer flexibility. Crucially, dangerous line voltages are not routed to the door, minimizing operator injury risk.

Optimum Interface

Simplifies connectivity. TruONETM features cloud-based connectivity via the ABB Ability™ Energy and Asset Manager, ensuring a common user interface and software environment with other ABB devices. Market-leading modular connectivity supports seven communication protocols for current and future integration.

Enhanced Performance and Efficiency

TruONETM further enhances project speed, operational continuity, energy efficiency, and logistics:

Speed Up Your Project

Automatic commissioning capabilities and pre-made configuration files uploaded from a PC minimize human error and reduce programming time by 80%.

Continuous Operation

Features predictive maintenance, self-diagnostics, and customer-replaceable modules to simplify service and reduce downtime. It provides fast in-phase open transition, ensuring seamless generator use even during business hours.

Energy Efficiency

Full compatibility with ABB Ability™ Energy and Asset Manager enables data processing for performance optimization, remote monitoring of energy consumption, and easier implementation of energy management strategies.

Optimized Logistics

A wide voltage range (200-480 VAC with +/-20% tolerance) reduces the need for stocking multiple SKUs, saving inventory space.

Space Saving

Plug-in factory and field-mount accessories eliminate the need for extra space inside the panel, allowing the use of standard cabinets even for specialized needs.

Reliable in Extreme Conditions

TruONETM exceeds standard requirements for performance and reliability, ensuring dependable operation in challenging electrical, mechanical, and environmental conditions.

It guarantees safe and reliable operation during dramatic variations in temperature (-25°C to +70°C) and voltage (200-480 VAC with +/-20% tolerance). It is also tolerant of vibrations (acc. IEC 60068-2-6) and shocks (acc. IEC 60068-2-27). TruONETM offers true short-circuit resilience, remaining fully operational after exposure to dangerous phenomena.

Visual Description: A diagram visually represents the rigorous testing performed on the TruONE ATS, highlighting its reliability under extreme conditions. It depicts a thermometer indicating a wide temperature range (-25°C to +70°C), a graphic showing resistance to vibrations (indicated by wavy lines), and an icon representing tolerance to shocks.

Applications and Target Users

TruONETM provides superior critical power security for a wide range of applications and users:

For Your Product, Project, or Facility:

Target Users:

TruONETM is the unique, reliable, all-in-one ATS solution.

TruONETM Part Number Key

An example part number is: ABB TruONE® automatic transfer switch, open transition, 800 amperes, UL, 3 phase + Neutral (3ph, 4 wire), Level 4 controls, 200–480 VAC voltage area, open style, bottom entry.

Category Description Example Codes
ABB Brand ABB ABB
TruONE® ATS Automatic Transfer Switch OX
ATS Type Open transition (I-II) A
Delayed transition (I-O-II) B
Phase Poles 1-pole 1
2-pole 2
3-pole 3
Controller Level 2 controls (DIP) 2
Level 3 controls (LCD) 3
Level 4 controls (Touch) 4
ATS Size 30, 60, 100, 125, 160, 200, 260, 400, 600, 800, 1000, 1200 (UL) 800
200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600 (IEC)
Standard UL U
IEC E
Neutral Switched Neutral S
Overlapping Neutral O
None X
Voltage Code 200–480 VAC Q
Enclosure Rating Open style, no enclosure (blank)
Enclosed style, IP54 54
Cabling Direction (Open Style) Bottom entry (sources on bottom, load on top) B
Top entry (sources on the top, load on the bottom) T
Cabling Direction (Enclosed Style) Bottom entry (all cable entries from bottom) B

Note: For available configurations, consult the ordering information.

ATS Frame Size Visuals

The document illustrates different ATS frame sizes and configurations:

Targeted Product Performance

Key performance specifications for TruONE ATS:

Parameter 30-400 A (UL) / 200-400 A (IEC) 260-800 A (UL) / 800-1600 A (IEC) 630-800 A (UL) / 1000-1250 A (IEC) 260-600 A (UL) / 800-1200 A (IEC)
ATS Frame Size (Covered by Ampere ranges) (Covered by Ampere ranges) (Covered by Ampere ranges) (Covered by Ampere ranges)
Rated operational current (IEC 60947-6-1, GB 14048-11: AC-33B) 30-400 A 260-800 A 630-800 A 260-600 A
(GB 14048-11: AC-33iA) 200-400 A 800-1600 A 1000-1250 A 800-1200 A
(UL1008: Emergency systems–total system load) 30-200 A 260-600 A (N/A for this range) 260-600 A
Short-circuit characteristics Iq (rated conditional short-circuit current) 100 kA 100 kA 100 kA 100 kA
Icw (rated short-time withstand current)/Short-time current ratings, 100ms 18-30 kA 200 kA 200 kA 200 kA
Icw (rated short-time withstand current)/Short-time current ratings, 500ms 42 kA (N/A for this range) (N/A for this range) (N/A for this range)
Withstand and Close-on ratings (any breaker) 480V 200 kA (N/A for this range) (N/A for this range) (N/A for this range)
Withstand and Close-on ratings, with current limiting fuses 30 kA 50 kA 50 kA 50 kA
Note: See the TruONE technical catalog for confirmed ratings

TruONETM Feature Comparison

Detailed feature comparison across different control levels:

Level 2 Controls (DIP)

Feature Specification
Ampere sizes availableIEC: 200-1600 A; UL: 30-1200 A
Rated voltage200-480Vac
Rated frequency50 / 60 Hz
Phase systemSingle and Three
Number of poles2, 3 and 4
Neutral configurationSwitched: Yes; Overlapping: No
Product typeOpen transition (I-II): Yes; Delayed transition (I-O-II): Yes
Voltage and frequency settingsPickup Voltage Source 1/2: Fixed 2% above dropout; Drop out Voltage Source 1/2: +/-5, 10, 15, 20%; Pickup Frequency Source 1/2: Fixed 1% above dropout; Drop out Frequency Source 1/2: +/-5, 10 %
Time delay settingsOverride momentary Source 1 Outage: 0-30 sec; Transfer from Source 1 to Source 2: 2 sec (0-3600 via Ekip Connect); Override momentary Source 2 Outage: 1.5 sec (0-60 via Ekip Connect); Transfer from Source 2 to Source 1: 0-30 sec; Generator stop delay: 30 secs or 4 mins; Center-OFF delay: 0 or 4 sec; Pre-transfer delay S1 to S2: No; Post-transfer delay S1 to S2: No; Pre-transfer delay S2 to S1: No; Post-transfer delay S2 to S1: No; Load shed delay: No
Source failure detectionsNo voltage: Yes; Undervoltage: Yes; Overvoltage: Yes; Phase missing: Yes; Voltage unbalance: Yes; Invalid frequency: Yes; Incorrect phase sequence: Yes
ControlsDIP + keys
LED indications for ATS, S1 and S2 statusYes
Standard digital inputs/outputsOpen transition: 0 / 1; Delayed transition: 1 / 1
Programmable digital inputs/outputsNo
Auto config (voltage, frequency, phase system)Yes
Source prioritySource 1, No priority
Manual re-transferYes
In-phase monitor (synchro check)Yes
Genset exercising: on-load, off-loadYes
In-built power meter moduleNo
Load sheddingYes
Real time clockYes
Event logYes
Predictive maintenanceNo
Harmonics measuringNo
Field-mount accessoriesAuxiliary contacts for position indication: Yes; Digital input/output modules: No; 12-24 Vdc aux supply module for controller: No; Communication modules: No
ConnectivityModbus RTU (RS-485): No; Modbus/TCP: No; Profibus DP: No; ProfiNet: No; DeviceNet: No; Ethernet IP: No
Monitoring via ABB Ability™: Energy and Asset ManagerNo
For applicationsMains - Mains: Yes; Mains - Generator: Yes (Contact ABB for <40kVA gensets)

Level 3 Controls (LCD)

Feature Specification
Ampere sizes availableIEC: 200-1600 A; UL: 30-1200 A
Rated voltage200-480Vac
Rated frequency50 / 60 Hz
Phase systemSingle and Three
Number of poles2, 3 and 4
Neutral configurationSwitched: Yes; Overlapping: Yes
Product typeOpen transition (I-II): Yes; Delayed transition (I-O-II): Yes
Voltage and frequency settingsPickup Voltage Source 1/2: 71-99%, 101-119%; Drop out Voltage Source 1/2: 70-98%, 102-120%; Pickup Frequency Source 1/2: 80.5-99.5%, 100.5-119.5%; Drop out Frequency Source 1/2: 80-99%, 101-120%
Time delay settingsOverride momentary Source 1 Outage: 0-60 sec; Transfer from Source 1 to Source 2: 0-3600 sec; Override momentary Source 2 Outage: 0-60 sec; Transfer from Source 2 to Source 1: 0-120 sec; Generator stop delay: 0-60 sec; Center-OFF delay: 0-300 sec; Pre-transfer delay S1 to S2: 0-60 sec; Post-transfer delay S1 to S2: 0-60 sec; Pre-transfer delay S2 to S1: 0-60 sec; Post-transfer delay S2 to S1: 0-60 sec; Load shed delay: 0-60 sec
Source failure detectionsNo voltage: Yes; Undervoltage: Yes; Overvoltage: Yes; Phase missing: Yes; Voltage unbalance: Yes; Invalid frequency: Yes; Incorrect phase sequence: Yes
ControlsLCD + keys
LED indications for ATS, S1 and S2 statusYes
Standard digital inputs/outputsOpen transition: 1 / 1; Delayed transition: 2 / 1
Programmable digital inputs/outputsYes
Auto config (voltage, frequency, phase system)Yes
Source prioritySource 1/2, No priority
Manual re-transferYes
In-phase monitor (synchro check)Yes
Genset exercising: on-load, off-loadYes
In-built power meter moduleYes
Load sheddingYes
Real time clockYes
Event logYes
Predictive maintenanceYes
Harmonics measuringNo
Field-mount accessoriesAuxiliary contacts for position indication: Yes; Digital input/output modules: Yes; 12-24 Vdc aux supply module for controller: Yes; Communication modules: Yes
ConnectivityModbus RTU (RS-485): Yes; Modbus/TCP: Yes; Profibus DP: Yes; ProfiNet: Yes; DeviceNet: Yes; Ethernet IP: Yes
Monitoring via ABB Ability™: Energy and Asset ManagerYes
For applicationsMains - Mains: Yes; Mains - Generator: Yes

Level 4 Controls (Touch)

Feature Specification
Ampere sizes availableIEC: 200-1600 A; UL: 30-1200 A
Rated voltage200-480Vac
Rated frequency50 / 60 Hz
Phase systemThree
Number of poles3 and 4
Neutral configurationSwitched: Yes; Overlapping: Yes
Product typeOpen transition (I-II): Yes; Delayed transition (I-O-II): Yes
Voltage and frequency settingsPickup Voltage Source 1/2: 71-99%, 101-119%; Drop out Voltage Source 1/2: 70-98%, 102-120%; Pickup Frequency Source 1/2: 80.5-99.5%, 100.5-119.5%; Drop out Frequency Source 1/2: 80-99%, 101-120%
Time delay settingsOverride momentary Source 1 Outage: 0-60 sec; Transfer from Source 1 to Source 2: 0-3600 sec; Override momentary Source 2 Outage: 0-60 sec; Transfer from Source 2 to Source 1: 0-120 sec; Generator stop delay: 0-60 sec; Center-OFF delay: 0-300 sec; Pre-transfer delay S1 to S2: 0-60 sec; Post-transfer delay S1 to S2: 0-60 sec; Pre-transfer delay S2 to S1: 0-60 sec; Post-transfer delay S2 to S1: 0-60 sec; Load shed delay: 0-60 sec
Source failure detectionsNo voltage: Yes; Undervoltage: Yes; Overvoltage: Yes; Phase missing: Yes; Voltage unbalance: Yes; Invalid frequency: Yes; Incorrect phase sequence: Yes
ControlsTouch + keys
LED indications for ATS, S1 and S2 statusYes
Standard digital inputs/outputsOpen transition: 2 / 1; Delayed transition: 3 / 1
Programmable digital inputs/outputsYes
Auto config (voltage, frequency, phase system)Yes
Source prioritySource 1/2, No priority
Manual re-transferYes
In-phase monitor (synchro check)Yes
Genset exercising: on-load, off-loadYes
In-built power meter moduleYes
Load sheddingYes
Real time clockYes
Event logYes
Predictive maintenanceYes
Harmonics measuringYes (Voltage, current)
Field-mount accessoriesAuxiliary contacts for position indication: Yes; Digital input/output modules: Yes; 12-24 Vdc aux supply module for controller: Yes; Communication modules: Yes
ConnectivityModbus RTU (RS-485): Yes; Modbus/TCP: Yes; Profibus DP: Yes; ProfiNet: Yes; DeviceNet: Yes; Ethernet IP: Yes
Monitoring via ABB Ability™: Energy and Asset ManagerYes
For applicationsMains - Mains: Yes; Mains - Generator: Yes

Additional Information

ABB reserves the right to make technical changes or modify the contents of this document without prior notice. Agreed particulars shall prevail for purchase orders. ABB Inc. does not accept responsibility for potential errors or lack of information in this document. All rights are reserved in this document and its contents. Reproduction, disclosure to third parties, or utilization of its contents, in whole or in part, is forbidden without prior written consent of ABB Inc.

Contact Information:

ABB Inc. Electrification Products
8155 T&B Boulevard
Memphis, TN 38125

Customer Service: 800-816-7809 (7:00 a.m. - 5:30 p.m., CST, Monday-Friday)
Email: elec_custserv@tnb.com

Technical Support: 888-385-1221, Option 1 (7:00 a.m. - 5:00 p.m., CST, Monday-Friday)
Email: lvps.support@us.abb.com

Copyright © 2021 ABB. All rights reserved. Specifications subject to change without notice.

Document Number: 1SCC303007B0201

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