Eaton NZMH4-AE1000-NA Molded Case Breaker - UL Listed
Part Number: NZMH4-AE1000-NA
Quick Summary
Eaton NZMH4-AE1000-NA is a complete molded case circuit breaker designed for reliable distribution protection in industrial power systems. Engineers often contend with nuisance trips, limited fault-current capability, and installations that are difficult to retrofit. UL Listed certification provides safety assurance, while the NZMH4 model supports high fault currents and 690 V operation. Together with a 1000 A rating and 85 kAIC capacity, this breaker helps optimize panel uptime and lifecycle costs, while enabling quick bolt-on installation. In practice, it supports heavy-duty distribution circuits, motor control centers, and panel boards, reducing downtime and simplifying maintenance. The device pairs with front screw terminals and bolt-on mounting for flexible installation across new builds or upgrades.
Product Information
Extended Description
NZMH4-AE1000-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip, Three-pole, 1000A, 690 Vac, 85 kAIC at 480 Vac, Bolt-on, Distribution circuit protect., 500-1000A, 2000-12000A delayed, Front screw, 500-1000A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-AE1000-NA
EAN
4015082711245
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
1000 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
2000-12000A delayed
Setting Range Ol Protector
500-1000A
Short-circuit breaking capacity
85 kAIC
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Overload range
500-1000A
Number of poles
Three-pole
The NZMH4-AE1000-NA uses the NZM4 frame with a thermal-magnetic trip, delivering reliable overload protection and fast fault interruption. This translates to improved coordination within distribution circuits and reduced nuisance trips in busy industrial facilities. It is ideal for motor control centers and distribution boards. Three-pole, bolt-on terminals simplify wiring and mounting, enabling faster installs, fewer wiring errors, and easier retrofits in existing enclosures. The breaker provides an 85 kAIC rating at 480 Vac, delivering high fault current capability to protect feeders and downstream equipment in data centers and heavy manufacturing lines. Adjustable protection options include an overload range of 500–1000 A and a delayed short-circuit release from 2000–12000 A, allowing selective coordination for complex load profiles. Front screw terminals and compatibility with rocker lever and motor drive accessories further streamline installation and maintenance across new builds and upgrades.
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FAQs
NZMH4-AE1000-NA uses bolt-on terminals and front screw connections within the NZM4 frame, enabling straightforward retrofits into most standard distribution panels and motor control centers. Its three-pole design supports common panelboard configurations, reducing wiring errors and simplifying upgrades without compromising safety or coordination.
This unit is rated for 1000 A at 690 V AC, with a thermal-magnetic trip and a short-circuit breaking capacity of 85 kAIC at 480 Vac. It is a three-pole breaker with T268 trip characteristics, designed for reliable overload protection and fast fault interruption in demanding industrial environments.
Yes. The three-pole configuration, NZM4 frame, and bolt-on mounting make it well-suited for motor control centers and distribution boards. Its high current rating and adjustable protection options support coordinated protection schemes, while front-access wiring and available accessories simplify MMC and MCC installation and maintenance.
The NZMH4-AE1000-NA is UL Listed, which provides recognized safety compliance for electrical protection devices in North American installations. This certification supports regulatory acceptance in most industrial facilities and ensures the device meets stringent safety and performance criteria for mission-critical applications.
The device is designed for durable service with a one-year warranty from installation (or eighteen months from shipment, whichever comes first), reducing ownership risk. Benefits include lower nuisance trips, improved uptime, and simpler maintenance due to standardized components, fast installation, and compatibility with common protective accessories, all contributing to a favorable total cost of ownership.