Schneider Masterpact NW08H1 Air Circuit Breaker

The Schneider Masterpact NW08H1 is a three-pole air circuit breaker from the Schneider Masterpact NW series, with a rated current of 800A, rated insulation voltage of 1000V AC, designed for low-voltage main distribution protection in industrial switchgear. This Schneider Masterpact NW08H1 supports optional MicroLogic electronic trip units to deliver overload, short-circuit and earth fault protection, and it provides visible isolation points for safe maintenance operations. The Schneider Masterpact NW08H1 is widely used as original spare and retrofit component for power plant, factory and commercial building LV incoming feeders.

The Schneider Masterpact NW08H1 complies with IEC 60947-2 standards and belongs to selectivity category B, supporting selective coordination within multi-level distribution networks. The front pushbutton operating mechanism of the Schneider Masterpact NW08H1 provides clear ON/OFF status indication. It can be configured in fixed or draw-out version; draw-out construction simplifies testing, inspection and replacement without removing main power busbars. Auxiliary contacts, alarm contacts, shunt trip and undervoltage release accessories can be fitted to the Schneider Masterpact NW08H1 for status signalling and remote tripping logic connected to PLC and SCADA systems.

This Schneider Masterpact NW08H1 is built for cabinet installation inside LV switchboards. The Schneider Masterpact NW08H1 supports a full range of MicroLogic trip units, covering basic protection, metering, waveform recording and power quality monitoring functions. It features robust mechanical endurance and EMC performance, capable of stable operation in factory electrical rooms with vibration and electromagnetic interference. The 1000V insulation rating of the Schneider Masterpact NW08H1 adapts to heavy-duty distribution systems, and it can be used for transformer secondary outlets and large motor feeder protection.

The Schneider Masterpact NW08H1 is commonly deployed in manufacturing plants, water treatment facilities, mining power centers and commercial distribution systems. Replacing a failed breaker with the Schneider Masterpact NW08H1 restores circuit protection and isolation rapidly. As a mature Schneider Masterpact NW air circuit breaker, the Schneider Masterpact NW08H1 provides dependable fault protection and isolation for critical low-voltage power circuits. ESD protection should be followed when handling the Schneider Masterpact NW08H1 to protect internal electronic trip unit components.