4-pole circuit breaker 250A NZMB2-4-A250 265855

NZM Series Circuit Breakers – Reliability and Flexibility in Every Circuit

The 4-pole 250A NZMB2-4-A250 circuit breaker is an electrical installation protection element that combines compact size with high performance. It belongs to the proven NZM series, valued by installers and users for its versatility and ease of installation. The use of a thermomagnetic release guarantees protection against overloads and short circuits, ensuring the safe operation of the installation and connected devices.

Protection and Functionality in One Device

This four-pole circuit breaker with a rated current of 250A is designed to protect circuits with a rated voltage of up to 440V. Its fixed mounting design ensures stability and reliable operation. The rated short-circuit breaking capacity of 25kA at 400V, 50Hz, demonstrates its effectiveness in the event of sudden overvoltages. Thanks to this, both installers and end-users can count on solid protection against the effects of failures.

Flexible Installation and Adaptation to Needs

The NZMB2-4-A250 circuit breaker is characterized by its universal mounting – it can be used with an optional motor drive or on a DIN TH rail (option). The connection of main circuits is made via screw connection, which facilitates and speeds up the installation process. The ability to adjust the setting range of the overload release (200…250A) and short-circuit release (6…10A) allows for precise adaptation of the circuit breaker characteristics to the specifics of the protected circuit. The lack of a built-in short-circuit to ground protection and a trip indicator are features typical of this model that should be considered when designing the protection system. The degree of protection IP20 provides basic protection against contact and ingress of solid objects. Power losses of 58.1W are typical for this type of device with such characteristics.