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Siemens 3RV1421-0JA10 S0 Circuit Breaker - Transformer Protection

Siemens 3RV1421-0JA10 S0 circuit breaker for transformer protection.

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ManufacturerSiemens

Part number3RV1421-0JA10

Size S0

Rated Current 0.7-1 A

Short-Circuit Release 21 A

Connection Type Screw Terminal

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CAGE: 9NK75

Transformer protection Adjustable thermal trip Fixed short-circuit release Screw terminals Standard switching capacity Phased-out product

Product description

The Siemens 3RV1421-0JA10 is a Size S0 circuit breaker specifically designed for transformer protection. It offers an adjustable thermal trip range of 0.7 to 1 A and a fixed short-circuit release of 21 A. This model features screw terminals for connection and provides standard switching capacity. It is important to note that this product is phased out, with the SIRIUS 3RV2 series being its successor.

This circuit breaker is well-suited for applications requiring protection for transformers, ensuring safety and operational continuity in industrial environments. Common uses include motor control centers, power distribution panels, and various types of automated machinery.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, is your reliable source for the Siemens 3RV1421-0JA10. We offer quality, expertise, and competitive pricing for hard-to-find components.

Technical specifications

Size	S0
Rated Current	0.7-1 A
Short-Circuit Release	21 A
Connection Type	Screw Terminal
Protection Type	Transformer Protection
Switching Capacity	Standard
Series	SIRIUS 3RV1

Common applications

Motor control

Power distribution

Industrial automation

Transformer protection

Machine building

Control cabinets

Compatible systems

SIRIUS 3RV1 accessories Industrial control systems

Also known as

Siemens 3RV1421-0JA10 SIRIUS 3RV1421-0JA10 Siemens S0 breaker

Replaces / compatible with

This product has been phased out and is replaced by the Siemens SIRIUS 3RV2 series, with the preferred successor being the 3RV2411-0JA10.

Technical note

Expert tip

Designed for transformer protection, the 3RV1421-0JA10's trip characteristics are optimized to handle transformer inrush currents while providing reliable fault protection.

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Frequently asked questions

What is the short-circuit release rating for the Siemens 3RV1421-0JA10?

The Siemens 3RV1421-0JA10 circuit breaker has a fixed short-circuit release rating of 21 Amps. Its adjustable thermal overload trip range is between 0.7 and 1 Amp.