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Siemens 3RV2021-1JA10: Size S0 Motor Protection Circuit Breaker

Siemens 3RV2021-1JA10 Size S0 Motor Protection Circuit Breaker

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ManufacturerSiemens

Part number3RV2021-1JA10

Size S0

Class 10

A-release 7-10 A

N-release 130 A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Adjustable thermal overload protection Class 10 tripping Magnetic short-circuit protection Phase loss sensitivity DIN rail mounting

Product description

The Siemens 3RV2021-1JA10 is a reliable Size S0 motor protection circuit breaker, designed to protect electrical motors from overloads and short circuits. It features an adjustable A-release (thermal) setting from 7 to 10 Amps and a fixed N-release (magnetic short-circuit) of 130 Amps, adhering to Class 10 tripping standards.

This breaker is widely used in industrial applications, motor control centers, and automated machinery where precise motor protection is critical for operational efficiency and equipment longevity.

Stanlo Automation, a veteran-owned surplus parts distributor, ensures you receive high-quality industrial components like the Siemens 3RV2021-1JA10, backed by our commitment to service.

Technical specifications

Size	S0
Class	10
A-release	7-10 A
N-release	130 A
Terminals	Screw

Common applications

Motor control

Industrial automation

Machine safety

Electrical enclosures

Pump systems

Compatible systems

Compatible with Siemens SIRIUS motor starter systems and related control components.

Also known as

Siemens 3RV2021-1JA10 breaker SIRIUS 3RV2 motor protection

Replaces / compatible with

This circuit breaker is part of the Siemens SIRIUS 3RV2 series and serves as a direct replacement for similar S0 frame motor protection devices.

Technical note

Expert tip

The phase loss sensitivity feature adds an extra layer of protection, preventing damage to motors due to unbalanced voltage conditions.

What happens next?

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Frequently asked questions

What type of terminals does the Siemens 3RV2021-1JA10 use?

The Siemens 3RV2021-1JA10 utilizes screw terminals for electrical connections. These provide a secure and reliable connection for motor feeder circuits.