Schneider NW08H1 Air Circuit Breaker

Feature & Principle

It is the basic frame of Schneider Masterpact NW series air circuit breaker. H1 stands for 65kA short-circuit breaking capacity. This model is only the breaker frame without trip unit, which needs to be equipped with Micrologic protection unit, auxiliary contacts, closing coil and undervoltage release according to site requirements. It can be selected as fixed or drawout structure, has visible isolation function, suitable for main power incoming cabinet, bus tie cabinet and distribution outgoing cabinet of industrial low-voltage power distribution system. It supports overload, short circuit, earth fault protection after matched with trip unit.

Specifications

Model: NW08H1 Brand: Schneider Series: Masterpact NW Rated current: 800 A Rated operational voltage: 690 VAC Ultimate breaking capacity Icu: 65 kA @ 440V Pole: 3P / 4P optional Structure: Fixed / Drawout Frequency: 50/60 Hz Standard: IEC 60947-2 Status: Obsolete, replacement model LV948001 Application: LV main incoming cabinet, bus coupler, power distribution switchgear Certification: CE, UL

Components & Diagnostics

Main contact assembly, arc extinguishing chamber, energy storage mechanism, operating handle, secondary terminal block, rack base (drawout version). Common faults: contact ablation, energy storage mechanism jamming, closing/opening coil burnout, mechanical interlock failure, terminal overheating.

Product Brief

NW08H1 air circuit breaker frame, Schneider Masterpact low voltage main distribution protection spare widely used for power switchgear overhaul and replacement.