Siemens 3VA2140-7KQ46-0AA0

The 3VA21 circuit breaker is designed for low voltage applications, conforming to IEC standards. This model operates with a rated current of 40A and is equipped with a highly effective electronic trip unit (ETU860) that provides line protection through overload and short-circuit settings. It features a breaking capacity classified as class C, with an impressive short-circuit breaking capacity of 110kA at 415V and 2.5kA at 690V.

Its compact dimensions measure 5.5 inches in width, 7.1 inches in height, and 4.2 inches in depth. The device includes an adjustable overload release current setting ranging from 16A to 40A, which allows for customized protection according to application requirements. Additionally, the circuit breaker is capable of integrated earth fault protection and can be mounted on a DIN rail.

Connections are facilitated via a box terminal with steel wrap-around lugs, ensuring secure electrical contact. The device also features an adjustable short-circuit release setting, accommodating both undelayed and delayed responses, enhancing its versatility for various industrial applications. The degree of protection is rated at IP40, suitable for environments where dust and water exposure is minimal.