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Siemens 3RV2021-1KA25 S0 Breaker with Aux Contacts

Siemens 3RV2021-1KA25 S0 motor protection circuit breaker with aux contacts.

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ManufacturerSiemens

Part number3RV2021-1KA25

Size S0

Trip Class CLASS 10

Adjustable Current 9-12 A

Fixed Current 163 A

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Veteran-owned

CAGE: 9NK75

Motor protection CLASS 10 Integrated auxiliary switches (1 NO/1 NC) Spring-type terminals Size S0 Standard switching capacity

Product description

The Siemens 3RV2021-1KA25 is a size S0 motor protection circuit breaker that provides overload and short-circuit protection for motors. It features a CLASS 10 thermal release adjustable between 9-12A and a 163A magnetic trip. This model is equipped with spring-type terminals for fast and secure connections, along with transverse auxiliary switches (1 NO + 1 NC) for integrated control and signaling.

This circuit breaker is suitable for a wide array of industrial applications, including motor control centers, conveyor systems, and packaging machinery. The inclusion of auxiliary contacts allows for seamless integration into automated systems that require feedback on the breaker's operational status.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RV2021-1KA25, ensuring you receive a reliable and competitively priced component. We are committed to providing quality automation parts with prompt delivery and expert customer support.

Technical specifications

Size	S0
Trip Class	CLASS 10
Adjustable Current	9-12 A
Fixed Current	163 A
Terminal Type	Spring-type
Switching Capacity	Standard
Auxiliary Contacts	1 NO + 1 NC

Common applications

Motor control panels

Industrial automation

Machine building

Conveyor systems

Packaging machinery

Control systems

Compatible systems

Siemens Sirius 3RV2 series

Also known as

Siemens 3RV2021-1KA25 breaker Siemens S0 breaker with aux 3RV20211KA25 Siemens

Replaces / compatible with

This part is a Siemens 3RV2021-1KA25. Please consult Siemens technical literature for compatibility with older models or specific system requirements.

Technical note

Expert tip

The spring-type terminals of the 3RV2021-1KA25 are designed for rapid field installation, reducing labor time and ensuring consistent connection quality.

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Frequently asked questions

Can the Siemens 3RV2021-1KA25 be used with control circuits?

Yes, the Siemens 3RV2021-1KA25 includes one normally open (NO) and one normally closed (NC) auxiliary contact. These can be wired into control circuits for status indication or interlocking functions.