SCHNEIDER MERLIN GERIN MASTERPACT NW30 H CIRCUIT BREAKER 3000A 3P MICROLOGIC 3.0.A

Product Overview

The SCHNEIDER MERLIN GERIN MASTERPACT NW30 H Air Circuit Breaker is a heavy-duty low voltage air circuit breaker fitted with Micrologic 3.0.A trip unit, engineered for industrial and marine power distribution systems, designed in accordance with IEC 60947-2 and Schneider Electric power protection specification. Built for overload protection, short-circuit interruption & current measurement, this 3P 3000A ACB withstands temperature fluctuation and mechanical vibration inside power switchgear rooms, delivers stable continuous operation, and provides reliable power system protection for power plants, oil & gas platforms, vessels and large industrial facilities.

Featuring 3-pole main contact assembly, Micrologic 3.0.A digital trip unit & high short-circuit breaking capacity. Both draw-out and fixed cabinet mounting are supported, adapting to limited installation space inside low voltage switchgear and power control cabinets. The modular assembly allows separate replacement of trip unit without full power system shutdown, greatly reducing equipment downtime for service. Equipped with current parameter monitoring, fault event recording & local status indicator, mature hardware structure prevents power system damage and guarantees safe power distribution during continuous duty.

For dependable overload protection, short-circuit interruption & current measurement, this Schneider Masterpact NW30H air circuit breaker continuously monitors line current and trips rapidly under abnormal electrical conditions to protect downstream cables and loads. Reliable overload protection, short-circuit interruption & current measurement, premium industrial grade components provide excellent resistance to thermal stress, extending service life in harsh industrial working environments. Practical current parameter monitoring, fault event recording & local status indicator, precise protection logic lowers false tripping risk during long-hour operation, ensuring stable power supply under variable load conditions.

During continuous overload protection, short-circuit interruption & current measurement, this NW30H air circuit breaker is widely used for main incoming feeder and busbar protection, fully compatible with Schneider EcoStruxure power management architecture. Stable overload protection, short-circuit interruption & current measurement, mature Schneider low voltage power protection technology with easy spare parts replacement and convenient after-sales maintenance. Robust current parameter monitoring, fault event recording & local status indicator, simplifies switchgear layout and reduces installation workload for power distribution retrofitting and electrical system overhaul projects.

Technical Specifications

Brand: SCHNEIDER MERLIN GERIN Model: MASTERPACT NW30 H Product Type: Air Circuit Breaker Rated Current: 3000A Poles: 3P Trip Unit: Micrologic 3.0.A Mounting: Draw-out / fixed switchgear installation Function: Overload and short-circuit protection, current monitoring Rated Voltage: Up to 690V AC Protection: Thermal overload, short circuit, vibration and temperature resistance Application Field: Power station, marine vessel, oil & gas, industrial building low voltage power distribution

Key Features

Designed for overload protection, short-circuit interruption & current measurement, heavy-duty air circuit breaker for industrial and marine power distribution application. Adopts 3-pole main contact assembly, Micrologic 3.0.A digital trip unit & high short-circuit breaking capacity, cabinet installation simplifies layout and reduces wiring work. Equipped with current parameter monitoring, fault event recording & local status indicator, switchgear mounting adapts limited power cabinet space. Modular structure allows separate trip unit replacement without full power system shutdown, cutting downtime. Premium industrial grade components resist temperature change and vibration, stable performance under variable site conditions and long-hour operation. Spare air circuit breaker for retrofitting and overhaul of Schneider low voltage power distribution systems.

Application Scope

‑ Main power protection unit: air circuit breaker performing overload protection, short-circuit interruption & current measurement, safeguards main power feeders and busbars in industrial and marine electrical systems. ‑ Compact switchgear installation: 3-pole main contact assembly, Micrologic 3.0.A digital trip unit & high short-circuit breaking capacity, draw-out design saves space and eases field cabinet layout. ‑ Low-maintenance continuous operation: current parameter monitoring, fault event recording & local status indicator, trip unit replacement without dismantling the whole breaker frame. ‑ Spare-part maintenance: replacement air circuit breaker for overhaul and hardware renewal of Schneider industrial low voltage power distribution systems.

Package & Delivery

Each SCHNEIDER MERLIN GERIN MASTERPACT NW30 H 3000A 3P ACB with Micrologic 3.0.A is packed with protective wrapping and shockproof export carton for electrical spare parts shipment. Complete delivery includes NW30H air circuit breaker main unit; installation manual and maintenance guide are provided for reference. Matching auxiliary contacts, shunt trip coils and under voltage release accessories are available as optional spare parts.