Home › Manufacturers › Siemens › 3RV1421-0FA10

Siemens

Siemens 3RV1421-0FA10 S0 Circuit Breaker for Transformer Protection

Siemens 3RV1421-0FA10 S0 Circuit Breaker for Transformer Protection.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RV1421-0FA10

Type Circuit breaker

Size S0

For Transformer protection

A-release 0.35-0.5 A

Get a price for 3RV1421-0FA10

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

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

Product description

The Siemens 3RV1421-0FA10 is a size S0 circuit breaker designed for transformer protection. It offers an adjustable current setting (A-release) from 0.35A to 0.5A and a short-circuit release of 10A. This breaker utilizes screw terminals for secure connections and provides standard switching capacity.

This circuit breaker is crucial for safeguarding transformers from overloads and short circuits, ensuring stable power delivery in industrial applications. It is suitable for various transformer sizes and operating conditions.

Stanlo Automation, a veteran-owned company specializing in surplus industrial automation parts, offers the Siemens 3RV1421-0FA10. We help you find and acquire essential components, even those that are phased out, to keep your systems running efficiently.

Technical specifications

Type	Circuit breaker
Size	S0
For	Transformer protection
A-release	0.35-0.5 A
Short-circuit release	10 A
Terminals	Screw terminal
Switching Capacity	Standard

Common applications

Transformer protection

Industrial power

Control systems

Electrical safety

Machinery

Power electronics

Compatible systems

Transformers Control circuits

Also known as

Siemens 3RV1421-0FA10 SIRIUS 3RV1421-0FA10 Siemens S0 transformer breaker

Replaces / compatible with

This part is a phased-out product. The preferred successor is the Siemens SIRIUS 3RV2411-0FA10.

Technical note

Expert tip

Ensure the selected adjustable current setting is below the transformer's thermal limits and coordinated with downstream protective devices.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the short-circuit release rating for the Siemens 3RV1421-0FA10 circuit breaker?

The Siemens 3RV1421-0FA10 circuit breaker is rated with a short-circuit release of 10A. This ensures protection against significant fault currents that could damage transformer windings.