Eaton NZMN3-VE400-NA NZM complete molded case circuit breaker - 50 kAIC at 415 Vac
Part Number: NZMN3-VE400-NA
Quick Summary
Eaton NZMN3-VE400-NA NZM complete molded case circuit breaker provides reliable protection for industrial power distribution. Engineers often struggle with protection coordination, downtime, and retrofit challenges across panels and drive systems. Compliance details are provided by the manufacturer; confirm applicable certifications and regional requirements to meet safety and regulatory needs. This device combines a 400 A rating, 690 V AC capability, and front-screw installation with selective and generator protection for scalable control in modern factories. Its NZM3 frame and thermal-magnetic trip reduce nuisance trips, while compatible accessories support streamlined installation and future expansion across diverse panels.
Product Information
Extended Description
NZMN3-VE400-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM3-frame, NZMN3, Thermal-magnetic trip, Three-pole, 400A, 690 Vac, 50 kAIC at 415 Vac, 42 kAIC at 480 Vac, Selective and gen. protect., 200-400A, Front screw, 200-400A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN3-VE400-NA
EAN
4015082693336
Product Length/Depth
6.535 in
Product Height
5.512 in
Product Width
5.512 in
Product Weight
5.5 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.
Compliances
Contact Manufacturer
Amperage Rating
400 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMN3
Frame
NZM3
Class
Selective and generator protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
400-4000A delayed, 800-4400A delayed
Setting Range Ol Protector
200-400A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC at 415 Vac 42 kAIC at 480 Vac
Connection
Front screw
Overload range
200-400A
Number of poles
Three-pole
Feature → The NZMN3-VE400-NA delivers a 400 A, 690 V AC rating with a high short-circuit breaking capacity of 50 kAIC at 415 Vac and 42 kAIC at 480 Vac. Business Impact → This enables precise protection coordination, minimizes costly outages, and supports reliable operation of large feeders and critical loads. Application → Ideal for panelboards, machine feeds, and process lines requiring robust interrupt performance and selective protection. Feature → Thermal-magnetic trip (T268) with NZMN3 frame. Business Impact → Delivers fast, accurate fault clearance while preventing nuisance trips during transient faults. Application → Suited for mixed fault environments common in industrial plants and generator-enabled systems. Feature → Three-pole design with front screw connection. Business Impact → Simplifies wiring, reduces installation time, and enables straightforward maintenance in confined panels. Application → Perfect for control panels and standalone switchgear where front-access installation is preferred. Feature → Accessories including rocker lever and motor drive; adjustable release and OL protection. Business Impact → Provides flexible protection settings (200-400 A OL, 400-4000 A delayed, 800-4400 A delayed) to match network demands and startup conditions. Application → Supports custom coordination with downstream devices and scalable system upgrades. Feature → Warranty and compliance considerations. Business Impact → Aligns with Eaton policy and standard safety practices, while manufacturer confirmation ensures region-specific certifications are met. Application → Suitable for ongoing maintenance programs and long-term capital projects in manufacturing and infrastructure environments.
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FAQs
Install as a three-pole device with front-screw terminals to simplify wiring and maintenance. Ensure compatible NZM3 frame mounting and provide space for the front-access lever and optional accessories like the rocker lever or motor drive. Verify enclosure clearance and torque ratings per the Eaton specification sheet for reliable operation.
The breaker is rated for 400 A at 690 V AC, with short-circuit breaking capacities of 50 kAIC at 415 Vac and 42 kAIC at 480 Vac. It uses a thermal-magnetic T268 trip with a 3-pole design, supporting selective protection and generator protection schemes in industrial networks.
Yes. The device is designed for selective and generator protection, enabling strategic feeder coordination and safe isolation of generator-fed circuits. It supports setting ranges for overload and short-circuit protection to match network requirements and minimize unintended trips.
The product is covered under Eaton’s warranty policy (25-000), one year from installation or 18 months from shipment, whichever comes first. Compliance details are provided by the manufacturer; confirm region-specific certifications and approvals before deployment to ensure regulatory alignment.
The official Eaton specification sheet for NZMN3-VE400-NA is available from Eaton’s website. Look for the NZMN3-VE400-NA datasheet to verify ratings, trip characteristics, and accessory options before ordering or installing.