NZMB2-S250-CNA Eaton Molded Case Circuit Breaker

The Eaton NZMB2-S250-CNA is a 250A, 3-pole molded case circuit breaker featuring a thermomagnetic release mechanism for short-circuit protection in motor and feeder circuits. Engineered to comply with UL, CSA, and IEC standards, this breaker operates within a voltage range of up to 440 V AC and offers an insulation voltage of 690 V. Its non-adjustable short-circuit release is set between 8–10 times the rated current (In), making it suitable for fixed mounting installations. The device accommodates multiple conductor types through its screw terminals and is built to withstand harsh conditions with IP20 protection and resistance to shock, UV exposure, and corrosion. This robust design ensures reliable performance in demanding industrial environments.