Siemens 3RV2021-4AA10 Motor Protection Circuit Breaker
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Siemens 3RV2021-4AA10 - 16A 3 Pole Motor Protection Circuit Breaker
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Description
Engineered for demanding industrial environments, this 16A motor protection circuit breaker safeguards equipment against overloads and short circuits. It features a 10-16A adjustable thermal trip and fixed magnetic protection within a compact Class 10 design. This DIN-rail mounted device integrates effortlessly into SIRIUS motor starter systems and control panels. It serves as the replacement for the legacy 3RV1021-4AA10 model. Phase loss protection and a lockable handle ensure maximum safety.Specifications
| Brand | Siemens |
|---|---|
| Part Number | 3RV2021-4AA10 |
| Series | 3RV2 |
| Amperage | 16A |
| Poles | 3 |
| Mounting Style | DIN Rail |
| Voltage | 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 55kA @ 400VAC, 10kA @ 500VAC, 4kA @ 690VAC |
| Amperage Range | 10-16A |
|---|
| Terminal Type | Screw/Clamp Terminal |
|---|---|
| For Use With | SIRIUS Motor Starter Systems, Control Panels |
| Wire Gauge | 16-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 16 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Busbar System, Rotary Handle |
|---|---|
| Standards | CSA C22.2 No. 14, IEC 60947-2, IEC 60947-4-1, UL 508 |
| Approval | ABS, ATEX, CE, CSA, DNV, IECEx, Lloyd's, UL |
| Temp Rating | -20C to 60C |
| Construction Features | Phase Loss Protection, Current Limiting |
Product FAQs
8 answersWhat is the direct replacement for the obsolete Siemens 3RV1021-4AA10?
The 3RV2021-4AA10 is the direct, higher performance replacement for the older 3RV1021-4AA10 manual motor starter protector. It offers improved energy efficiency while maintaining the same core specifications and footprint.
Which contactors are compatible with this motor protection circuit breaker?
This Sirius 3RV2 series breaker is fully compatible with Siemens 3RT2 series contactors. They can be easily linked together to build direct combination motor starter assemblies without requiring complex wiring.
Can I add auxiliary contacts to the 3RV2021-4AA10?
Yes, this unit supports various Sirius 3RV29 snap-on accessories. You can install front-mounted or lateral auxiliary switches, shunt trips, and undervoltage releases for remote signaling and control panel integration.
What is the thermal overload adjustment range for this breaker?
The thermal overload release on this Class 10 motor protection circuit breaker is adjustable from 10 to 16 Amps. This allows you to precisely match the full load amps (FLA) of your specific motor to prevent nuisance tripping.
How is the 3RV2021-4AA10 mounted in a control panel?
This size S0 frame breaker features a snap-on connection designed for standard 35mm DIN rail mounting. This modular design makes it easy to integrate into existing motor control panels alongside other Sirius components.
Does this motor starter protector include a lockout mechanism?
Yes, the rotary handle features a clear ON/OFF/TRIPPED status indicator and includes a built-in lockout mechanism. This ensures safe maintenance and compliance with standard lockout/tagout (LOTO) procedures.
What does the Class 10 trip rating mean for this motor protector?
A Class 10 trip rating means the thermal magnetic trip unit is engineered to disconnect the motor from the power source within 10 seconds during an overcurrent or locked rotor event, providing reliable protection for standard industrial motors.
Can this breaker be used as a standalone manual motor starter?
Yes, the 3RV2021-4AA10 integrates short-circuit protection, overload protection, and manual ON/OFF switching capabilities into a single device. It can function as a standalone manual motor starter or as part of a combination starter system.
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