3RV2421-4AA15

Product image of Siemens 3RV2421-4AA15 SIRIUS 3RV2 S0 transformer protection circuit breaker
Product image of Siemens 3RV2421-4AA15 SIRIUS 3RV2 S0 transformer protection circuit breaker

The Siemens 3RV2421-4AA15 is an S0 size three-pole circuit breaker with an A-operation overload range of 10...16A and a N-operation short-circuit trip fixed at 286A. It has one set of normally open and one set of normally closed auxiliary switches, weighs 0.375 kg, and is suitable for the protection of small transformer circuits.

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Product image of Siemens 3RV2421-4AA15 SIRIUS 3RV2 S0 transformer protection circuit breaker
Product Positioning

The 3RV2421-4AA15 is a SIRIUS 3RV2 series S0 size transformer protection circuit breaker with an A-operation overload range of 10...16A and a built-in auxiliary switch. It is suitable for small transformer circuits and applications requiring signal feedback.

Core Product Advantages and Features
Built-in auxiliary switch
The standard includes one set of normally open and one set of normally closed auxiliary contacts, which can directly output the circuit breaker trip status signal.
Low current transformer protection
The overload adjustment range of the A-type action is 10...16A, making it one of the lower current options among the 3RV2421 transformer protection models.
Fixed short-circuit trip value
The N-operation short-circuit trip value is 286A, which can withstand the instantaneous magnetizing surge when the transformer is closed.
Lightweight and compact housing
Weighing only 0.375 kg, it is suitable for switchboards with limited space.
project Specification
model 3RV2421-4AA15
series SIRIUS 3RV2
Casing size S0
use Transformer Protection
A. Action (Overload) Adjustment Range 10...16 A
N-action (short circuit) trip value 286 A
Rated insulation voltage 690 V
Interrupting capacity Icu@400V 55 kA
Extreme number 3P
Terminal type Screw terminals
Auxiliary switch 1 normally open + 1 normally closed
net weight 0.375 kg
Place of origin Germany

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