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Siemens 3RV1421-0EA10 S0 Circuit Breaker for Transformer Protection

Siemens 3RV1421-0EA10 S0 Circuit Breaker for Transformer Protection.

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ManufacturerSiemens

Part number3RV1421-0EA10

Type Circuit breaker

Size S0

For Transformer protection

A-release 0.28-0.4 A

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12-month warranty

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Size S0 For transformer protection Adjustable A-release Screw terminal connections Standard switching capacity

Product description

The Siemens 3RV1421-0EA10 is a size S0 circuit breaker specifically designed for transformer protection. It features an adjustable current setting (A-release) from 0.28A to 0.4A and a short-circuit release of 8.2A, utilizing screw terminals for robust connections. This breaker provides standard switching capacity.

This circuit breaker is essential for protecting transformers from both gradual overloads and sudden short circuits, ensuring the reliability of power systems. It is commonly found in industrial power distribution units and complex control systems.

Stanlo Automation, a veteran-owned provider of surplus industrial automation components, offers the Siemens 3RV1421-0EA10. We are committed to sourcing and supplying difficult-to-find parts to support your maintenance and operational needs.

Technical specifications

Type	Circuit breaker
Size	S0
For	Transformer protection
A-release	0.28-0.4 A
Short-circuit release	8.2 A
Terminals	Screw terminal
Switching Capacity	Standard

Common applications

Transformer protection

Industrial power systems

Control systems

Electrical safety

Power distribution

Compatible systems

Transformers Control circuits

Also known as

Siemens 3RV1421-0EA10 SIRIUS 3RV1421-0EA10 Siemens S0 transformer breaker

Replaces / compatible with

This part is a phased-out product. The preferred successor is the Siemens SIRIUS 3RV2411-0EA10.

Technical note

Expert tip

The adjustable overload setting should be chosen based on the transformer's full load current and cooling capabilities to ensure reliable operation.

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Frequently asked questions

What is the short-circuit release rating for the Siemens 3RV1421-0EA10 circuit breaker?

The Siemens 3RV1421-0EA10 circuit breaker has a short-circuit release rating of 8.2A. This provides protection against high-level fault currents that could damage the transformer.