Eaton NZMH2-AF40-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMH2-AF40-NA
Quick Summary
Eaton NZMH2-AF40-NA molded case circuit breaker protects distribution feeders in industrial panels, delivering reliable overcurrent protection for demanding environments. This helps electrical teams reduce nuisance trips and improve equipment uptime by coordinating thermal and magnetic tripping with precision. UL Listed certification underpins its compliance, while the NZM2 frame and 40 A rating support scalable protection schemes across panels and MCCs. With adjustable thermal protection and a fixed magnetic trip, it adapts to startup surges and evolving load profiles, offering a balanced solution for both new builds and retrofit projects. This unit also leverages front screw connection and compact geometry to simplify installation alongside accessible accessories for motor drive integration.
Product Information
Extended Description
NZMH2-AF40-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, adj. thermal, fixed magnetic trip, Three-pole, 40A, 690 Vac, 750 Vdc, 85-150 kAIC, Distribution circuit protection, 40-40A, 320-400A delayed, Front screw, 40-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-AF40-NA
EAN
4015082691936
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
4.1 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.
Compliances
Contact Manufacturer
Certifications
UL Listed
Amperage Rating
40 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
Adjustable thermal, fixed magnetic
Circuit breaker type
NZMH2
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
320-400A delayed
Setting Range Ol Protector
40-40A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
85-150 kAIC
Connection
Front screw
Overload range
40-40A
Number of poles
Three-pole
Feature → Business Impact → Application: The NZMH2-AF40-NA uses an adjustable thermal trip paired with a fixed magnetic trip, enabling precise coordination for load shedding and fault isolation, which reduces downtime and maintenance costs in continuous-process industries. This translates to faster fault clearance and improved safety margins in critical automation panels, where motor drives and feeders demand stable protection. Feature → Business Impact → Application: Front screw connections and three-pole construction deliver straightforward installation and robust mechanical integrity in dense switchgear assemblies, saving panel space and reducing field wiring errors in automotive, packaging, or water treatment facilities. Feature → Business Impact → Application: The NZM2 frame supports a compact footprint without compromising interrupt capacity, enabling scalable distribution protection across small to mid-size control panels while supporting future expansion. Feature → Business Impact → Application: The 40 A rating with 690 Vac / 750 Vdc capability covers diverse industrial networks, delivering consistent performance in mixed voltage environments and helping ensure regulatory compliance in global deployments. Feature → Business Impact → Application: The inclusion of rocker lever and motor drive accessories extends retrofit flexibility, allowing quick integration with existing control schemes and minimizing downtime during upgrades. Feature → Business Impact → Application: A high short-circuit breaking capacity of up to 150 kAIC and an 85–150 kAIC interrupt rating provide robust protection for high-inrush equipment and motors, reducing the risk of cascading faults in packaging lines, conveyors, and metalworking equipment. Feature → Business Impact → Application: The unit’s 4.05 in length, 7.24 in height, 4.13 in width, and 4.1 lb weight support lightweight, space-efficient installation in compact panels and retrofit projects, lowering overall enclosure costs and simplifying logistics for maintenance teams.
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FAQs
The NZMH2-AF40-NA uses a front screw connection and is a three-pole device within the NZM2 frame. Its compact dimensions (4.05 in depth, 7.24 in height, 4.13 in width) and weight of 4.1 lb support straightforward panel mounting and wiring. It accommodates standard panel layouts and is compatible with rocker lever and motor drive accessories for convenient upgrades.
Key specs include 40 A amperage rating, 690 Vac / 750 Vdc voltage ratings, adjustable thermal trip, fixed magnetic trip, and 85-150 kAIC interrupt rating (150 kAIC short-circuit breaking capacity). With 320-400 A delayed setting for short-circuit release, the device enables precise coordination with downstream protection and motor feeders, reducing nuisance trips and improving selectivity.
Yes. The three-pole NZMH2-AF40-NA is designed for distribution circuit protection in industrial panels and machinery. Its NZM2 frame, 40 A rating, and high interrupt capacity support reliable protection for motors, drives, and feeders, while its front-access installation and accessories simplify integration into existing control architectures.
This product is UL Listed, indicating conformity with recognized safety standards in the United States. Regional approvals may vary; always verify local regulatory requirements and matrix approvals before procurement or deployment in new markets.
The unit falls under Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. Coupled with easy installation, compact footprint, and robust protection features, the NZMH2-AF40-NA helps reduce downtime, extend panel life, and lower overall lifecycle costs in mission-critical automation environments.