3RV2021-1BA20

Siemens SIRIUS 3RV2021-1CA15 Motor Protection Circuit Breaker Product Image

The Siemens SIRIUS 3RV2021 series 3RV2021-1BA20, S0 frame motor protection circuit breaker has a current setting range of 1.4–2A and features dual thermal and electromagnetic trip protection for the motor circuit. It can be equipped with the 3RV2901 series auxiliary contact module to expand signal feedback as needed, making it suitable for use with control panels and production line distribution boxes.

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Siemens SIRIUS 3RV2021-1CA15 Motor Protection Circuit Breaker Product Image

Product Positioning

The 3RV2021-1BA20 is a Siemens SIRIUS 3RV2021 series S0 frame motor protection circuit breaker with a current adjustment range of 1.4–2A. The rated motor current is set by rotating the dial. It combines thermal overload protection and electromagnetic instantaneous trip short circuit protection, making it suitable for the opening, closing, and isolation of motor control circuits.

Core Product Advantages and Features

Thermal-electromagnetic dual protection mechanism

Built-in heating element provides overload protection, and combined with electromagnetic trip element to activate instantly in the event of a short circuit, providing double protection for the motor circuit safety.

Precise setting of the rotating dial

The rotating current dial on the panel allows direct setting of the motor's rated current (FLA), enabling intuitive on-site adjustments and rapid calibration.

Modular signal extension flexibility

It can be equipped with 3RV2901 series auxiliary contact modules to expand the signal feedback function according to the needs of the control panel, offering high configuration flexibility.

Applicable collective motor device design

It can be used as an opening, closing, and isolation element for collective motor installations, making it easy to integrate into the design of distribution panels and motor control boxes.

project	Specification
brand	Siemens
Product Series	SIRIUS 3RV2021
model	3RV2021-1BA20
Frame size	S0
Current adjustment range	1.4–2A
Overload trip rating	Class 10
Protection type	Thermal overload protection + electromagnetic short-circuit tripping
Current setting method	Rotating dial (FLA setting)
Auxiliary contacts	Compatible with 3RV2901 series auxiliary contact modules (optional)
Install application	It can be used as an on/off/isolation element for collective motor devices.
Product Type	Manual Motor Starter Protector
Adjustment tools	Pozidriv No. 2 screwdriver

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The 3RV2021-1BA15 is a SIRIUS 3RV2021 series S0 frame motor protection circuit breaker. It has a current adjustment range of 1.4–2A, thermal and electromagnetic double tripping, easy dial setting, and standard built-in 1NO+1NC signal contacts for direct feedback of operating status. It is suitable for motor control panels and production line power distribution circuits.