Eaton NZMH4-AE1200-NA NZM4 MCCB - UL Listed

Part Number: NZMH4-AE1200-NA
Manufacturer
Eaton
Part number
NZMH4-AE1200-NA

Quick Summary

Eaton NZMH4-AE1200-NA molded case circuit breaker protects distribution panels in industrial power systems. Maintenance downtime and improper protection settings are common pain points that this device helps prevent with precise 600-1200 A adjustability and reliable thermal-magnetic tripping. Key certifications include UL Listed, supporting safe operation and compliance in demanding environments. In practice, OEMs and panel builders benefit from a robust NZM4 frame, bolt-on terminals, and front-screw connections that simplify installation and field service. This translates to lower lifecycle costs and improved system uptime for distribution circuit protection applications.

Product Information

Extended Description

NZMH4-AE1200-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip, Three-pole, 1200A, 690 Vac, 85 kAIC at 480 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
NZMH4-AE1200-NA
EAN
4015082711252
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
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
Adjustment range short-circuit release
2400-14400A delayed
Setting Range Ol Protector
600-1200A
Short-circuit breaking capacity
85 kAIC
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Overload range
600-1200A
Number of poles
Three-pole
The 1200 A amperage rating paired with a 690 V AC voltage capability enables protection for large feeders and higher-power equipment, reducing the risk of nuisance trips and unplanned downtime in industrial distribution panels. Business impact: improved reliability, fewer outages, and easier scaling as plant loads grow. Application: medium-to-large MCCs and switchgear where high-current protection is required. The 85 kAIC short-circuit breaking capacity at 480 Vac delivers strong fault clearance, limiting damage and downtime. Application: critical power feeders and motor control centers demanding fast, selective protection. The thermal-magnetic trip (T268) provides coordinated protection for both overloads and short circuits, reducing nuisance trips and enabling safer maintenance windows. The NZM4 frame with three-pole, front screw terminals and bolt-on connection supports straightforward installation in tight spaces with durable mounting. Application: new builds and retrofits in modular switchgear. The adjustable overload range of 600–1200 A and delayed 2400–14400 A range allows tailoring to evolving load profiles. Business impact: predictable protection without hardware changes. Application: systems that experience load growth or variable motor starts. Accessories such as rocker lever and motor drive simplify operator interaction and integration with motor control schemes, improving reliability and response times. Warranty support (25-000) provides one year from installation or eighteen months from shipment, reducing procurement risk. Application: OEM, panel builder, and end-user maintenance planning. The combination of weight, dimensions, and bolt-on front-screw design aids in logistics, installation planning, and serviceability across multiple panel configurations.

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FAQs

Install the NZMH4-AE1200-NA using the NZM4 frame with front-screw connections and bolt-on terminals. Ensure correct alignment with the panel busbars and secure mounting using the three-pole assembly. Verify torque specs per Eaton guidelines, and confirm compatible accessories (rocker lever, motor drive) are installed for intended control methods.
The device is rated for 1200 A at 690 V AC, with a short-circuit breaking capacity of 85 kAIC at 480 Vac and a thermal-magnetic trip type T268. It supports a 600–1200 A overload setting range and a 2400–14400 A delayed range, enabling precise protection aligned with load and fault requirements.
Yes. With its 690 V AC rating, three-pole configuration, and robust 85 kAIC capacity, the NZMH4-AE1200-NA is designed for distribution panels and motor control centers in industrial settings. The bolt-on terminals and front-screw design streamline installation in compact or retrofit panels while maintaining compliance with standard protection schemes.
The NZMH4-AE1200-NA is UL Listed, confirming conformance with recognized safety standards for molded case circuit breakers. This certification supports compliance in North American electrical installations and helps streamline approval in panel assemblies and retrofit projects.
Eaton offers a warranty policy (Selling Policy 25-000) providing one year from installation or eighteen months from shipment, whichever occurs first. This coverage helps mitigate lifecycle risk, supports maintenance planning, and can improve total cost of ownership in panel protection projects.