Eaton NZMN4-VEF900-NA Molded Case Circuit Breaker UL Listed
Part Number: NZMN4-VEF900-NA
Quick Summary
The Eaton NZMN4-VEF900-NA molded case circuit breaker provides reliable overcurrent protection for industrial electrical systems. Many engineers struggle to achieve selective protection while keeping installation simple and compliant with evolving standards. This unit carries CSA Certified, IEC Rated, and UL Listed certifications, reinforcing safety and regulatory alignment in factory floors, data centers, and power distribution panels. With a 900 A rating and a 600 Vac maximum, it supports robust protection without compromising uptime. Designed for bolt-on mounting with front screw terminals, it offers quick installation and scalable performance for growing plants.
Product Information
Extended Description
NZMN4-VEF900-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMN4, Thermal-magnetic trip type, Three-pole, 900A, 600 Vac, 50 kAIC at 400 Vac, Bolt-on, Selective and generator protection, Rocker lever, motor drive, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN4-VEF900-NA
UPC
786685631417
Product Length/Depth
8.15 in
Product Height
8.27 in
Product Width
8.27 in
Product Weight
46.2 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
CSA Certified IEC Rated UL Listed
Type
Selective
Amperage Rating
900 A
Voltage rating
600 Vac
Trip Type
T268
Circuit breaker type
NZMN4
Terminals
Bolt-on
Frame
NZM4
Class
Selective and generator protection
Accessories
Rocker lever, motor drive
Interrupt rating
50 kAIC at 400 Vac
Connection
Front screw
Number of poles
Three-pole
Feature: Amperage rating of 900 A, voltage rating of 600 Vac, and an interrupt rating of 50 kAIC at 400 Vac → Business Impact: Enables fast fault clearance for high-load feeders, reducing arc energy exposure and protecting downstream equipment → Application: Ideal for main distribution panels in manufacturing, data centers, and heavy machinery control rooms. Feature: Thermal-magnetic trip type (T268) → Business Impact: Delivers reliable overload and short-circuit protection with selective coordination to minimize outages → Application: Supports motor drives and equipment with varying inrush currents, ensuring selective tripping across panels. Feature: NZM4 frame with three-pole construction, bolt-on terminals, and front screw connections → Business Impact: Simplifies installation, reduces wiring time, and improves panel serviceability → Application: Retrofit into existing NZM4 switchgear or new-build control panels. Feature: Selective protection and generator protection scope → Business Impact: Enables coordination with upstream devices and standby generators, improving overall system reliability → Application: Power distribution networks in manufacturing facilities, data centers, and standby generation setups. Feature: Rocker lever and motor drive compatibility → Business Impact: Enhances operator control and integration with motor control schemes, shortening commissioning time → Application: Machine automation panels and control cabinets requiring quick-start operation. Feature: Certifications and warranty alignment → Business Impact: Reduces compliance risk and supports maintenance planning with a defined warranty window → Application: Trusted for regulated industries and OEM panel builds needing certified protection devices.
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FAQs
The NZMN4-VEF900-NA uses bolt-on terminals with front screw connections, part of the NZM4 frame. This arrangement supports secure cable terminations and straightforward panel mounting, improving reliability and simplifying maintenance. The front-access design helps during installation and future servicing, particularly in dense switchgear where rear access is limited.
Yes. The device offers selective protection and generator protection, with a 900 A rating and 50 kAIC interrupt capability, enabling staged tripping and minimizing outages during generator transfer. Its T268 trip type provides fast response to faults while preserving other feeders, ideal for power distribution in facilities with standby generation.
The unit is CSA Certified, IEC Rated, and UL Listed, indicating compliance with North American and international safety standards. These certifications support installation approvals across various industries, from manufacturing to data centers, and help meet internal compliance programs. Always verify current certificates on Eaton's datasheet for your exact country and code requirements.
It is rated for 900 A continuous current, 600 Vac maximum system voltage, and delivers 50 kAIC interrupting capacity at 400 Vac. With a three-pole design and NZM4 frame, it supports heavy-duty protection in high-risk circuits and aligns with industrial standards for motor loads, distribution panels, and critical equipment.
For installation, leverage bolt-on terminals and front screw connections on the NZM4 frame’s three-pole design. The unit weighs about 46.2 lb and measures roughly 8.15 in by 8.27 in by 8.27 in, enabling predictable panel footprint and simpler retrofits in existing switchgear without significant rework.