Eaton NZMH4-AEF1200-NA Molded Case Breaker - UL Listed
Part Number: NZMH4-AEF1200-NA
Quick Summary
NZMH4-AEF1200-NA molded case circuit breaker provides reliable distribution protection for industrial electrical panels and motor drives. In demanding environments, nuisance trips and slow fault isolation can drive downtime and maintenance costs. It carries IEC rated, CSA certified, and UL listed marks, ensuring global compliance and safe operation across markets. Designed for three-pole, bolt-on installation on the NZM4 frame with front-screw connections and a rocker lever, it enables straightforward retrofit and reliable field service. This high-current breaker supports motor drives and large feeders, delivering predictable coordination and reduced total cost of ownership for electrical distribution systems.
Product Information
Extended Description
NZMH4-AEF1200-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip type, Three-pole, 1200A, 690 Vac, 85 kAIC at 480 Vac, Bolt-on, Distribution circuit protection, Rocker lever, motor drive, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-AEF1200-NA
UPC
786685631370
Product Length/Depth
8.26 in
Product Height
8.14 in
Product Width
8.14 in
Product Weight
46 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
IEC Rated CSA Certified UL Listed
Amperage Rating
1200 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH4
Terminals
Bolt-on
Frame
NZM4
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Number of poles
Three-pole
Feature: 1200 A amperage rating for three-pole protection; Business Impact: Protects large feeders and motor drive circuits, reducing the risk of overcurrent damage; Application: Distribution panels and MCCs in heavy industrial facilities. Feature: 85 kAIC interrupt rating at 480 Vac; Business Impact: Enables fast fault interruption in high fault-current environments, improving safety and reducing arc flash exposure; Application: Transformer-fed feeders and high-current distribution networks. Feature: Thermal-magnetic trip type T268; Business Impact: Provides selective protection with fast response to both overloads and short circuits; Application: Motor drives and critical process circuits requiring coordinated protection. Feature: NZM4 frame with bolt-on terminals and front screw; Business Impact: Simplifies installation, retrofit, and field maintenance with secure wiring and robust mechanical fit; Application: New builds and panel upgrades in industrial plants. Feature: Rocker lever and motor drive accessories; Business Impact: Enhances operability and expanded control options, reducing commissioning time; Application: Control cabinets and machine centers. Certifications and standards: IEC Rated, CSA Certified, UL Listed guarantee global compliance and safe operation across multiple regions, supporting procurement and lifecycle management.
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FAQs
NZMH4-AEF1200-NA uses bolt-on terminals with front screw connections for secure wiring and robust field installation. It belongs to the NZM4 frame family and is a three-pole MCCB designed for straightforward retrofit into existing distribution panels and machine control centers, reducing installation time and rework.
An 85 kAIC interrupt rating indicates high fault-current handling capacity, enabling fast, reliable interruption of short-circuit events near power sources. For motor drives and high-current feeders, this rating improves safety, protects equipment, and supports compliant coordination with upstream protection devices.
The NZMH4-AEF1200-NA is IEC Rated, CSA Certified, and UL Listed, ensuring global compliance and safety across electrical systems. These certifications support cross-border procurement, reduce regulatory risk, and align with industry standards for distribution circuit protection in industrial environments.
Warranty follows Eaton policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This coverage supports ongoing maintenance planning and provides a clear path for replacement if a manufacturing defect is identified within the window.
This three-pole molded case breaker is ideal for distribution panels, motor-drive protection, and large-feed applications up to 1200 A at 690 V AC. It suits industrial plants, process facilities, and utility switchgear where reliable fault interruption and easy field maintenance are priorities.