EATON NZM2 NZMH2-A40 Molded Case Circuit Breaker

Overview

EATON NZMH2-A40 is a NZM2 frame molded case circuit breaker with thermal magnetic trip unit, rated current 40A, three-pole configuration. EATON NZMH2-A40 provides adjustable thermal overload protection and adjustable magnetic short-circuit protection, suitable for AC and DC distribution feeder protection, motor circuit protection and industrial panel load protection. This EATON NZMH2-A40 is widely stocked as spare molded case circuit breaker for low voltage power distribution assemblies.

Features

EATON NZMH2-A40 thermal magnetic trip unit supports adjustable overload setting from 32A to 40A and adjustable short-circuit magnetic setting from 320A to 400A. It offers high breaking capacity for short-circuit fault isolation. NZMH2-A40 supports rich optional accessories including auxiliary contact, alarm contact, shunt trip, undervoltage release and motor operating mechanism. It adopts screw terminal connection, standard panel mounting arrangement. Front handle supports local manual ON/OFF operation and trip status indication. This breaker complies with IEC 60947-2, UL and CSA standards. It is designed for 24/7 continuous operation in industrial switchboards, machine control cabinets, pump and fan control panels. It can be used for both AC 690V and DC 750V circuit protection.

Specifications

EATON NZM2 NZMH2-A40 MCCB Brand: EATON MOELLER Model: NZMH2-A40 Frame size: NZM2 Type: thermal magnetic molded case circuit breaker Pole: 3 poles Rated current In: 40 A Overload setting range: 32 A ~ 40 A Magnetic short-circuit setting range: 320 A ~ 400 A Rated operational voltage: 690 VAC, 750 VDC Breaking capacity: high Icn rating Trip type: adjustable thermal, adjustable magnetic Connection: screw terminal Mounting: panel mount Protection class: IP20 Standard: IEC 60947-2, UL 489, CSA Status: active Eaton NZM series distribution spare

Principle

EATON NZMH2-A40 uses bimetallic strip for overload detection and magnetic coil for short-circuit detection. This Molded Case Circuit Breaker trips gradually under long-time overload condition and trips instantly when short-circuit current exceeds magnetic threshold. It cuts off main circuit to protect cables, motors and upstream distribution equipment from damage. The trip status can be transmitted via auxiliary and alarm contacts to PLC or monitoring system.

Applications

EATON NZMH2-A40 is deployed in factory low voltage distribution panels, water treatment equipment, packaging machinery, conveyor systems and motor control circuits. It provides feeder and motor overload and short-circuit protection. EATON NZMH2-A40 is stocked as spare molded case circuit breaker for NZM2 low voltage power distribution assemblies.