Eaton NZMH4-AE1600 Molded Case Circuit Breaker - UL Listed
Part Number: NZMH4-AE1600
Quick Summary
The Eaton NZMH4-AE1600 molded case circuit breaker provides reliable overcurrent protection for distribution panels in industrial facilities. Engineers often grapple with selecting devices that handle high ampacity while offering straightforward installation. This unit combines an 800-1600 A OL protector setting, a 1600 A amp rating, and a 690 V AC rating with 85 kAIC capacity to meet demanding mid‑voltage protection needs. UL Listed safety certification adds assurance for compliant installations across manufacturing and processing environments. Its front-access screw terminals and bolt-on mounting simplify retrofits and panel upgrades, while the NZM4 frame compatibility and available accessories—such as rocker levers and motor drive—support scalable, future-ready protection infrastructure. In short, it delivers reliability, fast fault clearance, and predictable maintenance impact for your distribution circuits.
Product Information
Extended Description
NZMH4-AE1600 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip, Three-pole, 1600A, 690 Vac, 85 kAIC at 480 Vac, Bolt-on, Distribution circuit protect., 800-1600A, 3200-19200A delayed, Front screw, 800-1600A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-AE1600
EAN
4015082657673
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
1600 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
3200-19200A delayed
Setting Range Ol Protector
800-1600A
Short-circuit breaking capacity
85 kAIC
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Overload range
800-1600A
Number of poles
Three-pole
Feature → Business Impact → Application: High-ampacity protection with 1600 A rating and 800-1600 A OL protector setting enables reliable safeguarding of large industrial feeders; reduces nuisance trips while accommodating load growth in distribution panels. Application: mid‑to‑large electrical feeders in manufacturing facilities. Feature → Fast, thermal‑magnetic trip with T268 configuration improves fault discrimination and minimizes downtime; saves energy and prevents equipment damage in motor start-ups and line faults. Application: heavy machinery and process lines. Feature → Front‑screw terminals with bolt‑on mounting streamline installation and retrofits; lowers labor and field error during panel upgrades. Application: OEM panels and retrofit projects requiring quick, robust mounting. Feature → NZM4 frame compatibility and optional accessories like rocker lever and motor drive enable scalable protection schemes; supports future expansion without full re‑engineering. Application: modular switchgear and evolving control systems. Feature → 690 V AC rating with 85 kAIC interrupt capacity at 480 Vac provides strong fault clearance for medium‑voltage environments; ensures regulatory compliance for safety and reliability. Application: distribution protection in industrial plants. Feature → UL Listed certification and a one‑year warranty offer vendor confidence and procurement assurance; aids in compliance audits and maintenance planning. Application: enterprise wide procurement and maintenance programs.
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FAQs
The NZMH4-AE1600 is built on the NZM4 frame and uses three‑pole, front‑screw connections with bolt‑on terminals. It is designed for distribution panels and is compatible with NZM4‑frame assemblies and common accessory options like rocker levers and motor drives, enabling straightforward retrofits and panel upgrades.
The overload (OL) protector setting on the NZMH4-AE1600 ranges from 800 A to 1600 A, enabling precise coordination with downstream protection devices and motor loads. This wide range supports scalable protection for varying circuit loads while maintaining reliable fault clearance.
An 85 kAIC interrupt rating at 480 Vac means the breaker can safely interrupt high‑fault currents without damage, reducing transformer and conductor stress, enhancing system reliability, and supporting compliance with common medium‑voltage protection standards in industrial facilities.
Yes, the NZMH4-AE1600 is UL Listed, confirming compliance with U.S. safety standards for electrical protection equipment. This certification supports safer installations, easier audits, and dependable performance in industrial environments.
The breaker features front screw terminals and bolt‑on mounting for rapid, tool‑friendly installation. Its NZM4 frame compatibility, combined with the availability of accessories like rocker levers and motor drives, minimizes panel modification needs and enables scalable protection in evolving automation and control systems.