
Siemens Industrial Controls 3RV2021-1EA10 Motor Starter
The Siemens SIRIUS 3RV2021-1EA10 Motor Starter Protector is a high-performance, current-limiting circuit breaker engineered for the protection and switching of three-phase motors up to 4A. This Size S0 manual motor starter features an adjustable thermal overload release range of 2.8 to 4.0 Amps, allowing for precise calibration to the motor’s full load amperage (FLA). Built with Class 10 tripping characteristics, it ensures the circuit is interrupted within 10 seconds of an overcurrent event, safeguarding sensitive windings from thermal damage. The unit utilizes a thermal-magnetic trip mechanism, offering reliable short-circuit protection with a high breaking capacity of 100 kA at 400V. Designed for easy integration into industrial control panels, it features screw terminals and standard 35mm DIN rail mounting. This Type E self-protected combination motor controller is ambient temperature compensated up to 60°C, ensuring stable operation in demanding HVACR environments. Its rotary handle provides clear trip indication and is lockable for secure lockout/tagout (LOTO) procedures.
Key Benefits- Precise Overload Protection: The adjustable dial allows technicians to match the unit exactly to the motor's performance data, reducing nuisance trips.
- Phase Loss Sensitivity: Integrated protection monitors for phase failure to prevent single-phasing conditions that cause rapid motor burnout.
- Compact S0 Frame: Saves critical rail space in control cabinets while maintaining high interrupting ratings and robust 3-pole switching.
- Global Compliance: Meets IEC 60947-2/4-1 and UL/CSA standards, making it suitable for both domestic and international machinery builds.
Can I add auxiliary switches to this motor protector?
Yes, the 3RV2021 series supports front-mounted or side-mounted auxiliary contacts and signaling switches to provide status feedback to a PLC or control circuit.
What is required for a UL Type E installation?
For Type E "Self-Protected" applications, a specific terminal adapter (such as the 3RV2928-1H) is typically required to meet the necessary clearance and creepage distances at the line side.
Is this unit compatible with 3RT2 contactors?
The 3RV2021-1EA10 is part of the SIRIUS modular system and is designed for direct link-module connection to Size S0 3RT2 contactors for a seamless assembly.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $173.25
-65%$173.25
$60.64Siemens Industrial Controls 3RV2021-1EA10 Motor Starter
The Siemens SIRIUS 3RV2021-1EA10 Motor Starter Protector is a high-performance, current-limiting circuit breaker engineered for the protection and switching of three-phase motors up to 4A. This Size S0 manual motor starter features an adjustable thermal overload release range of 2.8 to 4.0 Amps, allowing for precise calibration to the motor’s full load amperage (FLA). Built with Class 10 tripping characteristics, it ensures the circuit is interrupted within 10 seconds of an overcurrent event, safeguarding sensitive windings from thermal damage. The unit utilizes a thermal-magnetic trip mechanism, offering reliable short-circuit protection with a high breaking capacity of 100 kA at 400V. Designed for easy integration into industrial control panels, it features screw terminals and standard 35mm DIN rail mounting. This Type E self-protected combination motor controller is ambient temperature compensated up to 60°C, ensuring stable operation in demanding HVACR environments. Its rotary handle provides clear trip indication and is lockable for secure lockout/tagout (LOTO) procedures.
Key Benefits- Precise Overload Protection: The adjustable dial allows technicians to match the unit exactly to the motor's performance data, reducing nuisance trips.
- Phase Loss Sensitivity: Integrated protection monitors for phase failure to prevent single-phasing conditions that cause rapid motor burnout.
- Compact S0 Frame: Saves critical rail space in control cabinets while maintaining high interrupting ratings and robust 3-pole switching.
- Global Compliance: Meets IEC 60947-2/4-1 and UL/CSA standards, making it suitable for both domestic and international machinery builds.
Can I add auxiliary switches to this motor protector?
Yes, the 3RV2021 series supports front-mounted or side-mounted auxiliary contacts and signaling switches to provide status feedback to a PLC or control circuit.
What is required for a UL Type E installation?
For Type E "Self-Protected" applications, a specific terminal adapter (such as the 3RV2928-1H) is typically required to meet the necessary clearance and creepage distances at the line side.
Is this unit compatible with 3RT2 contactors?
The 3RV2021-1EA10 is part of the SIRIUS modular system and is designed for direct link-module connection to Size S0 3RT2 contactors for a seamless assembly.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens SIRIUS 3RV2021-1EA10 Motor Starter Protector is a high-performance, current-limiting circuit breaker engineered for the protection and switching of three-phase motors up to 4A. This Size S0 manual motor starter features an adjustable thermal overload release range of 2.8 to 4.0 Amps, allowing for precise calibration to the motor’s full load amperage (FLA). Built with Class 10 tripping characteristics, it ensures the circuit is interrupted within 10 seconds of an overcurrent event, safeguarding sensitive windings from thermal damage. The unit utilizes a thermal-magnetic trip mechanism, offering reliable short-circuit protection with a high breaking capacity of 100 kA at 400V. Designed for easy integration into industrial control panels, it features screw terminals and standard 35mm DIN rail mounting. This Type E self-protected combination motor controller is ambient temperature compensated up to 60°C, ensuring stable operation in demanding HVACR environments. Its rotary handle provides clear trip indication and is lockable for secure lockout/tagout (LOTO) procedures.
Key Benefits- Precise Overload Protection: The adjustable dial allows technicians to match the unit exactly to the motor's performance data, reducing nuisance trips.
- Phase Loss Sensitivity: Integrated protection monitors for phase failure to prevent single-phasing conditions that cause rapid motor burnout.
- Compact S0 Frame: Saves critical rail space in control cabinets while maintaining high interrupting ratings and robust 3-pole switching.
- Global Compliance: Meets IEC 60947-2/4-1 and UL/CSA standards, making it suitable for both domestic and international machinery builds.
Can I add auxiliary switches to this motor protector?
Yes, the 3RV2021 series supports front-mounted or side-mounted auxiliary contacts and signaling switches to provide status feedback to a PLC or control circuit.
What is required for a UL Type E installation?
For Type E "Self-Protected" applications, a specific terminal adapter (such as the 3RV2928-1H) is typically required to meet the necessary clearance and creepage distances at the line side.
Is this unit compatible with 3RT2 contactors?
The 3RV2021-1EA10 is part of the SIRIUS modular system and is designed for direct link-module connection to Size S0 3RT2 contactors for a seamless assembly.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












