3RV2421-4BA10

The Siemens 3RV2421-4BA10 is an S0 size three-pole circuit breaker with an A-operation overload range of 13...20A, a N-operation short-circuit trip fixed at 325A, a rated current of 20A, and external dimensions of approximately 45×97×97mm. It is suitable for small transformer circuits.

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Product image of Siemens 3RV2421-4BA10 SIRIUS 3RV2 S0 transformer protection circuit breaker

Product Positioning

The 3RV2421-4BA10 is a SIRIUS 3RV2 series S0 size transformer protection circuit breaker with an A-operation overload range of 13...20A, suitable for overload and short-circuit protection of small-capacity transformer circuits.

Core Product Advantages and Features

Suitable for small-capacity transformer circuits

The overload adjustment range of Action A is 13...20A, with a rated current of 20A, corresponding to the primary side requirements of small transformers.

Fixed short-circuit trip protection

The N-operation short-circuit trip value is 325A, which can withstand the instantaneous magnetizing surge when the transformer is closed without tripping.

S0 size standard blocking capacity

The breaking capacity at 400V reaches 55kA, which meets the short-circuit protection requirements of general low-voltage switchboards.

Compact design

With external dimensions of approximately 45×97×97mm, it is compact in size and easy to install inside the distribution panel.

project	Specification
model	3RV2421-4BA10
series	SIRIUS 3RV2
Casing size	S0
use	Transformer Protection
A. Action (Overload) Adjustment Range	13...20 A
N-action (short circuit) trip value	325 A
Rated current	20 A
Rated insulation voltage	690 V
Interrupting capacity Icu@400V	55 kA
Extreme number	3P
Terminal type	Screw terminals
External dimensions (length × width × depth)	97×45×97 mm
Protection level	IP20

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