Eaton NZMN4-AE1200-NA Molded Case Breaker - UL Listed
Part Number: NZMN4-AE1200-NA
Quick Summary
The Eaton NZMN4-AE1200-NA molded case circuit breaker protects distribution circuits in industrial panels. In demanding environments, nuisance trips and unplanned downtime cut productivity, but this unit combines thermal-magnetic protection with precise T268 trip characteristics to minimize faults. UL Listed certification ensures safety compliance for 600 Vac distribution circuits and 50 kAIC fault handling in three-pole configurations. Designed for easy, secure installation, it supports bolt-on mounting and front-screw terminals, delivering fast panel changes and reliable long-term performance. This makes it suitable for motor control centers, switchgear assemblies, and power distribution boards across manufacturing plants.
Product Information
Extended Description
NZMN4-AE1200-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMN4, Thermal-magnetic trip, Three-pole, 1200A, 600 Vac, 50 kAIC at 400 Vac, Bolt-on, Distribution circuit protect., 600-1200A, 2400-14400A delayed, Front screw, 600-1200A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN4-AE1200-NA
EAN
4015082711221
Product Length/Depth
8.15 in
Product Height
8.268 in
Product Width
8.268 in
Product Weight
46.297 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
1200 A
Voltage rating
600 Vac
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
2400-14400A delayed
Setting Range Ol Protector
600-1200A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC at 400 Vac
Connection
Front screw
Overload range
600-1200A
Number of poles
Three-pole
Eaton Specification Sheet - NZMN4-AE1200-NA
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: High amperage rating up to 1200 A with 50 kAIC fault capacity at 400 Vac. Business impact: Enables large feeders to be protected with a single device, reducing part counts and simplifying panel design. Application: Distribution circuits in industrial panels benefit from fewer components and tighter protection coordination. Dial in long-term reliability with fewer trips during peak loads. Feature: Three-pole NZMN4 frame with a 600 Vac rating. Business impact: Delivers robust three-phase protection suitable for large motors and equipment, improving system stability and safety. Application: Motor drives and heavy machinery in process industries count on this combination for dependable protection. Feature: Thermal-magnetic trip (Trip Type T268) with adjustable overload range (600-1200 A) and short-circuit release range (2400-14400 A delayed). Business impact: Precise protection settings prevent nuisance trips while ensuring selective coordination, reducing unplanned downtime and maintenance costs. Application: Critical protection in power distribution panels across manufacturing and infrastructure projects. Feature: Front screw terminals and bolt-on construction. Business impact: Streamlines wiring and field replacement, minimizes installation time, and supports secure, maintenance-friendly connections. Application: installer-friendly for retrofit projects and new builds alike. Feature: Accessories including rocker lever and motor drive. Business impact: Enhances operability and remote control options, enabling safer and faster testing and commissioning. Application: Suitable for extended automation and control schemes in complex assemblies.
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FAQs
The NZMN4-AE1200-NA is a three-pole molded case circuit breaker designed for distribution panels and industrial switchgear. It uses the NZM4 frame with front screw terminals and bolt-on mounting, making it compatible with large three-phase feeders and motor control centers in manufacturing facilities. Its 1200 A rating supports major loads while maintaining robust protection against short circuits and overloads.
Key specs include a 1200 A amperage rating, 600 Vac voltage rating, and a 50 kAIC short-circuit breaking capacity at 400 Vac. It is a three-pole breaker with a T268 thermal-magnetic trip, NZM4 frame, and front-screw, bolt-on terminals. The overload range is 600–1200 A, and the delayed short-circuit release ranges from 2400–14400 A.
Yes. The three-pole NZMN4 molded case breaker with a 1200 A rating and 600 Vac capability is well-suited for motor control centers and similar three-phase distribution apps. Its T268 thermal-magnetic trip provides reliable protection for motors during startup and operation, while the bolt-on, front-screw design simplifies integration into MCC panels and existing switchgear.
The NZMN4-AE1200-NA carries UL Listed certification, ensuring compliance with recognized safety standards for distribution protection. The warranty follows Eaton’s Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first, providing protection against manufacturing defects during the early life of the product.
The official Eaton datasheet for NZMN4-AE1200-NA is available on Eaton’s site as the Specification Sheet. Accessing the PDF provides detailed electrical ratings, trip curves, installation instructions, and dimensional data to support accurate specification and compliance during panel design and field upgrades.