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Siemens 3RV1021-0KA15 S0 Motor Protection Circuit Breaker

Siemens 3RV1021-0KA15 S0 motor protection circuit breaker.

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ManufacturerSiemens

Part number3RV1021-0KA15

Size S0

Trip Class CLASS 10

A-release 0.9-1.25 A

Short-circuit release 16 A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Motor protection Adjustable A-release CLASS 10 tripping Screw terminal connections Transverse auxiliary switch Standard switching capacity

Product description

The Siemens 3RV1021-0KA15 is a Size S0 motor protection circuit breaker designed for reliable motor safeguarding. It features an adjustable A-release range of 0.9 to 1.25 A and a short-circuit release of 16 A. This breaker is equipped with screw terminals for secure connections and includes a transverse auxiliary switch with 1 NO and 1 NC contact for signaling.

This circuit breaker is ideal for protecting motors in industrial automation, machine building, and control panel applications. Its CLASS 10 rating is suitable for standard motor overload protection requirements.

As a veteran-owned surplus parts distributor, Stanlo Automation offers the Siemens 3RV1021-0KA15. We provide access to essential industrial components, including legacy and phased-out parts, ensuring your critical systems remain operational.

Technical specifications

Size	S0
Trip Class	CLASS 10
A-release	0.9-1.25 A
Short-circuit release	16 A
Terminals	Screw
Auxiliary Switch	1 NO + 1 NC
Switching Capacity	Standard
Phase-out	Yes

Common applications

Motor control

Industrial automation

Machine building

Control panels

Conveyor systems

Fan control

Compatible systems

Motor protection applications

Also known as

Siemens 3RV1021-0KA15 SIRIUS 3RV1021-0KA15 Siemens S0 circuit breaker Motor protection relay

Replaces / compatible with

This phased-out product's preferred successor is the Siemens SIRIUS 3RV2 series, specifically the 3RV2011-0KA15.

Technical note

Expert tip

Ensure the auxiliary switch is correctly wired to your control system for reliable monitoring of the breaker's operational state.

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Frequently asked questions

What are the contact ratings for the auxiliary switch on the Siemens 3RV1021-0KA15?

The transverse auxiliary switch on the Siemens 3RV1021-0KA15 includes one Normally Open (NO) and one Normally Closed (NC) contact. These contacts are typically rated for low voltage and current signals used in control circuits for status indication or interlocking.