Eaton NZMN4-4-AE1000 Molded Case Circuit Breaker - UL Listed
Part Number: NZMN4-4-AE1000
Quick Summary
NZMN4-4-AE1000 molded case circuit breaker from Eaton provides robust overload and short-circuit protection for distribution panels in industrial facilities. This unit delivers 1000 A at 690 V AC with a 50 kAIC interrupt capacity, while offering front-screw bolt-on terminals for straightforward installation and maintenance. Designed for reliability in demanding environments, the NZMN4 frame supports four poles and a thermal-magnetic trip (T268) for precise protection. UL Listed certification underpins safety and compliance in regulated applications, while Eaton’s warranty supports uptime and predictable budgeting. In practice, users gain reduced downtime, streamlined electrical design, and a scalable platform for motor drives and power distribution, with favorable lifecycle cost benefits.
Product Information
Extended Description
NZMN4-4-AE1000 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMN4, Thermal-magnetic trip, Four-pole, 1000A, 690 Vac, 50 kAIC at 400 Vac, Bolt-on, Distribution circuit protect., 500-1000A, 2000-12000A delayed, Front screw, 500-1000A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN4-4-AE1000
EAN
4015082659127
Product Length/Depth
8.15 in
Product Height
11.024 in
Product Width
11.024 in
Product Weight
59.525 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Amperage Rating
1000 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMN4
Terminals
Bolt-on
Frame
NZM4
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
2000-12000A delayed
Setting Range Ol Protector
500-1000A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC at 400 Vac
Connection
Front screw
Overload range
500-1000A
Number of poles
Four-pole
High current rating and 50 kAIC interrupt capacity protect large distribution circuits from faults, minimizing equipment damage and downtime. This is essential in panel boards and feeders where fault current can spike during startup. The NZMN4-4-AE1000's 1000 A rating at 690 V AC aligns with heavy loads, ensuring continuity and safety across critical processes. The four-pole NZM4 frame, combined with front-screw terminals and bolt-on mounting, simplifies installation and field maintenance, while fitting into standard enclosures to reduce cabinet modification time. The thermal-magnetic trip with a T268 characteristic offers precise protection, with adjustable overload range (500-1000 A) and delayed short-circuit release (2000-12000 A) to improve selective coordination. Rocker lever and motor-drive accessories support motor-control applications, reducing spare-parts stock and enabling quick retrofits. UL Listed status adds regulatory confidence, and the warranty provides budgeting certainty across the equipment lifecycle.
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FAQs
This breaker uses front screw terminals with bolt-on mounting for fast field installation. Its four-pole NZM4 frame fits in standard distribution enclosures and the compact footprint (8.15 in depth; 11.024 in height and width) supports dense panel layouts while maintaining secure connections.
Key specs include 1000 A amperage rating, 690 V AC voltage rating, and 50 kAIC short-circuit breaking capacity at 400 Vac. The device features a thermal-magnetic T268 trip, with overload setting adjustable from 500–1000 A and delayed short-circuit release from 2000–12000 A.
Yes. The four-pole design provides coordinated protection across all phases, and accessories like rocker lever and motor drive support motor-control configurations. It integrates with motor drives and feeders to improve protection during startup and load changes while simplifying commissioning.
The NZMN4-4-AE1000 is UL Listed, reflecting compliance with recognized safety standards for electrical protection equipment. This certification supports regulatory acceptance in Western markets and compatible panel assemblies.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first. The device’s rugged build, high interrupt capacity, and available spare parts help reduce maintenance costs and downtime across the equipment lifecycle.