3VL3720-1NA46-0AA0 SIEMENS

The 3VL3720-1NA46-0AA0 is a robust 4-pole circuit breaker from Siemens, designed for reliable line protection in electrical systems. It features a standard breaking capacity of Icu=55kA at 415V AC, ensuring effective interruption of fault currents. Equipped with an Electronic Trip Unit (ETU10), this circuit breaker offers precise and adjustable protection characteristics. The ETU10 includes a LIN (Line Protection) function with a rated current (In) of 200A, allowing for flexible adaptation to various load requirements. The overload protection (IR) is adjustable from 80A to 200A, providing a wide range of settings to match specific application needs. Short-circuit protection (II) is configurable from 1.25 to 11 times the rated current (IN), enabling fast response to short-circuit events. This model does not include N-conductor protection. Communication capabilities are integrated into the ETU, facilitating remote monitoring and control. Auxiliary releases and auxiliary/alarm switches are not included in this configuration. This circuit breaker is suitable for industrial and commercial applications where reliable and adjustable circuit protection is essential.