Description 

The Siemens 3RV2021-1JA10 is a compact motor protection circuit breaker designed for safeguarding motors up to 4 kW (at 400V). It provides reliable protection against overload, short-circuit, and phase failure, making it ideal for use in industrial control panels and motor starter assemblies.

 

 

Technical Specifications 

Condition	New/Never Used Surplus
Brand	Siemens
Category	Contactors and Starters
Part Number	3RV2021-1JA10
Subcategory	Contactor & Starter Accessories & Parts
Degree of protection (IP)	IP20
Depth	97mm
Number of Poles	3
Overload Release Current Setting	7 - 10A
Rated Operating Voltage	690 - 690V
Rated Operation Power at AC-3, 230 V	2.2kW
Rated Operation Power at AC-3, 400 V	4kW
Rated Permanent Current Iu	10A
Rated Short-Circuit Breaking Capacity lcu at 400 V, AC	100kA
Switch Off Technique	Magnetic
Type of Electrical Connection of Main Circuit	Screw connection
Width	45mm
Weight	0.36 kgs

  

 

Information About 3RV2021-1JA10

The Siemens 3RV2021-1JA10 is a motor protection circuit breaker from the SIRIUS series, designed to safeguard motors against overload, short-circuit, and phase failure conditions. 

Key Features:

• Adjustable Current Range: The breaker supports an adjustable current setting between 7 to 10 A, allowing for flexibility in various motor applications. 

• Operating Voltage: It operates within a voltage range of 220 to 690 V AC, accommodating different power systems. 

• Breaking Capacity: The device offers a breaking capacity of up to 100 kA at 400 V AC, ensuring reliable interruption of fault currents.

• Trip Class: Class 10 trip characteristics provide rapid response to overload conditions, typically tripping within 10 seconds at six times the rated current. 

• Mounting and Connections: Designed for DIN rail mounting, it features screw-type terminals for secure electrical connections. 

This circuit breaker is suitable for protecting motors in industrial settings, including manufacturing plants, conveyor systems, and HVAC equipment, where reliable motor protection is essential.