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Siemens 3RV2421-4DA10 S0 Transformer Protection Circuit Breaker

Siemens 3RV2421-4DA10 Size S0 circuit breaker for transformer protection.

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ManufacturerSiemens

Part number3RV2421-4DA10

Size S0

For transformer protection Yes

A-release 18...25 A

N-release 400 A

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Veteran-owned

CAGE: 9NK75

Transformer protection Adjustable overload protection Fixed short-circuit release (N-release) Screw terminals Standard switching capacity Size S0

Product description

The Siemens 3RV2421-4DA10 is a Size S0 circuit breaker engineered for transformer protection. It features an adjustable A-release (overload) from 18 to 25 Amps and an N-release (short-circuit) of 400 Amps. This model uses screw terminals and offers standard switching capacity.

This breaker is designed to protect transformers in industrial applications from overcurrents. Its specific settings are tailored for transformer protection, ensuring reliability against both sustained overloads and sudden short circuits.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 3RV2421-4DA10. We offer high-quality, cost-effective industrial automation components, ensuring your operational continuity.

Technical specifications

Size	S0
For transformer protection	Yes
A-release	18...25 A
N-release	400 A
Terminals	Screw terminal
Switching capacity	Standard

Common applications

Transformer protection

Industrial control

Automation systems

Power distribution

Machinery control

Manufacturing

Compatible systems

Siemens Sirius 3RV2 Siemens 3RV2 accessories

Also known as

Siemens 3RV24214DA10 Siemens S0 transformer breaker Siemens 18-25A breaker

Replaces / compatible with

Compatible with Siemens Sirius 3RV2 series accessories.

Technical note

Expert tip

The 400A N-release offers robust short-circuit protection, critical for safeguarding transformers against high fault currents.

What happens next?

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Frequently asked questions

What is the maximum adjustable current for overload protection on the 3RV2421-4DA10?

The Siemens 3RV2421-4DA10 has an adjustable A-release (overload protection) that can be set within the range of 18 to 25 Amps. This allows for fine-tuning the thermal protection based on the transformer's load requirements.