Siemens SIRIUS 3RV2021-1CA15 Motor Protection Circuit Breaker
This document provides detailed technical specifications for the Siemens SIRIUS 3RV2021-1CA15 motor protection circuit breaker.
General Product Information
| Product Brand Name | Siemens |
|---|---|
| Product Designation | SIRIUS Circuit breaker |
| Design of the Product | For motor protection |
| Product Type Designation | 3RV2 |
| Model Number | 3RV2021-1CA15 |
| Size | S0 |
| Switching Capacity | Standard |
| Auxiliary Switches | 1 NO + 1 NC (transverse) |
| Trip Class | CLASS 10 |
| Adjustable Current Response Value (Overload Release) | 1.8 ... 2.5 A |
| N-release (Instantaneous Short-Circuit Trip Unit) | 33 A |
General Technical Data
| Power Loss [W] for Rated Value of the Current | 7.25 W (at AC, hot operating state) |
|---|---|
| Power Loss per Pole [W] | 2.4 W (at AC, hot operating state per pole) |
| Insulation Voltage (Degree of Pollution 3) | 690 V (at AC rated value) |
| Surge Voltage Resistance Rated Value | 6 kV |
| Shock Resistance | 25g / 11 ms (according to IEC 60068-2-27) |
| Mechanical Service Life (Main Contacts) | 100,000 operating cycles (typical) |
| Mechanical Service Life (Auxiliary Contacts) | 100,000 operating cycles (typical) |
| Electrical Endurance (Typical) | 100,000 operating cycles |
| Reference Code | Q |
| SVHC Substance Name | Lead |
| Weight | 0.37 kg |
| Maximum Installation Altitude | 2,000 m |
| Ambient Temperature (Operation) | -20 ... +60 °C |
| Ambient Temperature (Storage/Transport) | -50 ... +80 °C |
| Relative Humidity (Operation) | 10 ... 95 % |
Main Circuit
| Number of Poles | 3 |
|---|---|
| Adjustable Current Response Value (Overload Release) | 1.8 ... 2.5 A |
| Type of Voltage | AC |
| Operating Voltage Rated Value | 20 ... 690 V |
| Operating Voltage at AC-3 Rated Value Maximum | 690 V |
| Operating Voltage at AC-3e Rated Value Maximum | 690 V |
| Operating Frequency Rated Value | 50 ... 60 Hz |
| Operational Current Rated Value | 2.5 A |
| Operational Current at AC-3 (400 V) | 2.5 A |
| Operational Current at AC-3e (400 V) | 2.5 A |
| Operating Power at AC-3 |
|
| Operating Power at AC-3e |
|
| Operating Frequency (AC-3 Maximum) | 15 1/h |
| Operating Frequency (AC-3e Maximum) | 15 1/h |
Auxiliary Circuit
| Design of Auxiliary Switch | Transverse |
|---|---|
| Type of Voltage (Auxiliary and Control Circuit) | AC/DC |
| Number of NC Contacts | 1 |
| Number of NO Contacts | 1 |
| Number of CO Contacts | 0 |
| Operational Current of Auxiliary Contacts at AC-15 |
|
| Operational Current of Auxiliary Contacts at DC-13 |
|
Protective and Monitoring Functions
| Product Function: Ground Fault Detection | No |
|---|---|
| Product Function: Phase Failure Detection | Yes |
| Trip Class | CLASS 10 |
| Design of Overload Release | Thermal |
| Maximum Short-Circuit Current Breaking Capacity (Icu) at AC |
|
| Operating Short-Circuit Current Breaking Capacity (Ics) at AC |
|
| Response Value Current of Instantaneous Short-Circuit Trip Unit | 33 A |
UL/CSA Ratings
| Full-Load Current (FLA) for 3-Phase AC Motor | 2.5 A |
|---|---|
| Yielded Mechanical Performance [hp] for Single-Phase AC Motor (230 V) | 0.17 hp |
| Yielded Mechanical Performance [hp] for 3-Phase AC Motor |
|
| Contact Rating of Auxiliary Contacts according to UL | C300 / R300 |
Short-Circuit Protection
| Product Function Short Circuit Protection | Yes |
|---|---|
| Design of the Short-Circuit Trip | Magnetic |
| Design of the Fuse Link for Short-Circuit Protection of the Auxiliary Switch | Fuse gL/gG: 10 A, miniature circuit breaker C 6 A (short-circuit current Ik < 400 A) |
Installation, Mounting, and Dimensions
Diagram Description (Page 6)
The diagram on page 6 shows the physical appearance and dimensions of the circuit breaker. The front view displays the main circuit terminals labeled 1/L1, 3/L2, 5/L3 for input and 2/T1, 4/T2, 6/T3 for output. It also shows the ON/OFF/TRIPPED rotary lever, auxiliary contacts labeled 21 (NC) and 22, and 13 (NO) and 14. The model number '3RV2' is visible. Dimensions provided are: Height: 97 mm, Width: 45 mm, Depth: 97 mm. The side view illustrates the depth of 96.9 mm and height of 49 mm, with a small projection of 5 mm.
Mounting Position
Any
Fastening Method
Screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Required Spacing (with side-by-side mounting at the side)
| Condition | Spacing |
|---|---|
| For grounded parts at 400 V (downwards) | 30 mm |
| For grounded parts at 400 V (upwards) | 30 mm |
| For grounded parts at 400 V (at the side) | 9 mm |
| For live parts at 400 V (downwards) | 30 mm |
| For live parts at 400 V (upwards) | 30 mm |
| For live parts at 400 V (at the side) | 9 mm |
| For grounded parts at 500 V (downwards) | 30 mm |
| For grounded parts at 500 V (upwards) | 30 mm |
| For grounded parts at 500 V (at the side) | 9 mm |
| For live parts at 500 V (downwards) | 30 mm |
| For live parts at 500 V (upwards) | 30 mm |
| For live parts at 500 V (at the side) | 9 mm |
| For grounded parts at 690 V (downwards) | 50 mm |
| For grounded parts at 690 V (upwards) | 50 mm |
| For grounded parts at 690 V (backwards) | 0 mm |
| For grounded parts at 690 V (at the side) | 30 mm |
| For grounded parts at 690 V (forwards) | 0 mm |
| For live parts at 690 V (downwards) | 50 mm |
| For live parts at 690 V (upwards) | 50 mm |
| For live parts at 690 V (backwards) | 0 mm |
| For live parts at 690 V (at the side) | 30 mm |
| For live parts at 690 V (forwards) | 0 mm |
Connections/Terminals
| Type of Electrical Connection (Main Current Circuit) | Screw-type terminals |
|---|---|
| Type of Electrical Connection (Auxiliary and Control Circuit) | Screw-type terminals |
| Arrangement of Electrical Connectors (Main Current Circuit) | Top and bottom |
| Type of Connectable Conductor Cross-sections (Main Contacts) |
|
| Type of Connectable Conductor Cross-sections (Auxiliary Contacts) |
|
| Tightening Torque (Main Contacts) | 2 ... 2.5 N·m |
| Tightening Torque (Auxiliary Contacts) | 0.8 ... 1.2 N·m |
| Design of Screwdriver Shaft | Diameter 5 to 6 mm |
| Size of Screwdriver Tip | Pozidriv size 2 |
| Design of Thread of Connection Screw (Main Contacts) | M4 |
| Design of Thread of Connection Screw (Auxiliary and Control Contacts) | M3 |
Safety Related Data
| Product Function Suitable for Safety Function | Yes |
|---|---|
| Suitability for Use (Safety-Related Switching On) | No |
| Suitability for Use (Safety-Related Switching Off) | Yes |
| Service Life Maximum | 10 a |
| Test Wear-Related Service Life Necessary | Yes |
| Proportion of Dangerous Failures (Low Demand Rate SN 31920) | 40 % |
| Proportion of Dangerous Failures (High Demand Rate SN 31920) | 50 % |
| B10 Value (High Demand Rate SN 31920) | 5,000 |
| Failure Rate [FIT] (Low Demand Rate SN 31920) | 50 FIT |
| Device Type according to ISO 13849-1 | 3 |
| Overdimensioning according to ISO 13849-2 Necessary | Yes |
| Safety Device Type according to IEC 61508-2 | Type A |
| T1 Value (Proof Test Interval or Service Life according to IEC 61508) | 10 a |
Electrical Safety
| Protection Class IP on the Front | IP20 (according to IEC 60529) |
|---|---|
| Touch Protection on the Front | Finger-safe, for vertical contact from the front |
Display
| Display Version for Switching Status | Handle |
|---|
Approvals and Certificates
General Product Approval
Certifications include CCC, CE, EG-Konf., UKCA, KC, EAC, UL. Additional certifications for hazardous locations (ATEX, IECEx), test certificates, and maritime applications are available.
Diagram Description (Page 7)
The schematic diagram on page 7 illustrates the electrical connections. It shows a main circuit input with terminals 1/L1, 3/L2, 5/L3 and output terminals 2/T1, 4/T2, 6/T3. Overcurrent trip units are indicated by symbols (I>). The diagram also depicts auxiliary contacts: 13/14 as Normally Open (NO) and 21/22 as Normally Closed (NC). A fuse (-F) is shown in series with the main circuit input.
Further Information
- Information on the packaging: https://support.industry.siemens.com/cs/ww/en/view/109813875
- Information- and Downloadcenter (Catalogs, Brochures,...): https://www.siemens.com/ic10
- Industry Mall (Online ordering system): https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RV2021-1CA15
- Cax online generator: http://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RV2021-1CA15
- Service&Support (Manuals, Certificates, Characteristics, FAQs,...): https://support.industry.siemens.com/cs/ww/en/ps/3RV2021-1CA15
- Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...): http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RV2021-1CA15&lang=en
- Characteristic: Tripping characteristics, I²t, Let-through current: https://support.industry.siemens.com/cs/ww/en/ps/3RV2021-1CA15/char
- Further characteristics (e.g. electrical endurance, switching frequency): http://www.automation.siemens.com/bilddb/index.aspx?view=Search&mlfb=3RV2021-1CA15&objecttype=14&gridview=view1
