3RV2421-4CA10

The Siemens 3RV2421-4CA10 is an S0 size three-pole circuit breaker with an A-operation overload range of 16...22A and a N-operation short-circuit trip fixed range of 364A. It weighs 0.375 kg, is screw-terminal mounted, and is suitable for primary side protection of small transformers.

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Product image of Siemens 3RV2421-4CA10 SIRIUS 3RV2 S0 transformer protection circuit breaker

Product Positioning

The 3RV2421-4CA10 is a SIRIUS 3RV2 series S0 size transformer protection circuit breaker with an A-operation overload range of 16...22A, providing overload and short-circuit protection for small transformer circuits.

Core Product Advantages and Features

Wide overload adjustment range

The A-action is adjustable within a range of 16...22A, covering a wide range of transformer rated currents and offering considerable setting flexibility.

Fixed short-circuit trip protection

The N-operation short-circuit trip value is 364A, which can withstand the excitation surge wave at the moment of transformer closing.

Lightweight S0 housing

Weighing only 0.375 kg, its compact size makes it suitable for use in distribution panels with limited space.

Standard screw terminal mounting

The three-pole main circuit uses screw terminal connections and can be directly mounted on a 35mm DIN rail.

project	Specification
model	3RV2421-4CA10
series	SIRIUS 3RV2
Casing size	S0
use	Transformer Protection
A. Action (Overload) Adjustment Range	16...22 A
N-action (short circuit) trip value	364 A
Rated current	22 A
Rated insulation voltage	690 V
Interrupting capacity Icu@400V	55 kA
Extreme number	3P
Terminal type	Screw terminals
net weight	0.375 kg
Place of origin	Germany

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