Eaton NZMH4-AEF600-NA NZM MCCB - 85 kAIC UL Listed
Part Number: NZMH4-AEF600-NA
Quick Summary
NZMH4-AEF600-NA is a three-pole molded case circuit breaker for distribution protection in industrial power panels. Engineers often contend with nuisance trips and slow fault isolation when protecting feeders and motors. UL Listed certification supports safe, compliant installations, while the 85 kAIC short-circuit rating and 690 V AC capability match modern plant demands. This device pairs with the NZM4 frame and front-screw mounting for streamlined installation and reliable performance in tight control panels. For panel builders and integrators, it offers predictable protection, scalable current handling, and durable operation in demanding industrial environments.
Product Information
Extended Description
NZMH4-AEF600-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip, 1200-7200A delayed, Three-pole, 600A, 690 Vac, 85 kAIC at 480 Vac, Distribution circuit protection, 600-600A, Front screw, 600-600A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-AEF600-NA
EAN
4015082711146
Product Length/Depth
8.14 in
Product Height
8.14 in
Product Width
8.14 in
Product Weight
8.3 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
600 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH4
Frame
NZM4
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Setting Range Ol Protector
600-600A
Short-circuit breaking capacity
85 kAIC
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Overload range
600-600A
Number of poles
Three-pole
Trip rating
1200-7200 A delayed
Feature: High current capability with 600 A rating, 690 V AC and 85 kAIC short-circuit capacity. Business Impact: Provides robust feeder protection against high fault currents, reducing outage risk and improving fault clearance times. Application: Suitable for distribution circuits in manufacturing lines and switchgear where fault currents can approach system limits. Feature: NZM4 frame compatibility with front-screw connections. Business Impact: Enables compact layouts, straightforward wiring, and faster installation with reduced commissioning time. Application: Ideal for compact control panels and retrofit projects in mid-size facilities. Feature: Thermal-magnetic trip (T268) with precise overload and short-circuit protection. Business Impact: Improves protection selectivity and motor stop/start reliability, lowering wear and downtime. Application: Effective in motor control centers and line feeders under dynamic loads. Feature: 600-600 A fixed overload setting with 85 kAIC at 480 VAC. Business Impact: Delivers consistent trip performance and predictable protection for critical circuits. Application: Distribution feeders requiring stable protection thresholds. Feature: Accessories including rocker lever and motor drive. Business Impact: Enhances operability and remote control readiness, reducing maintenance time. Application: Panels with local operator access and motor-driven control schemes. Feature: UL Listed certification and documented compliance. Business Impact: Simplifies regulatory approvals and panel certification processes. Application: Industrial installations demanding safety-certified protection devices.
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FAQs
This unit uses a front-screw connection and fits the NZM4 frame, enabling straightforward mounting in standard distribution panels. Plan wire routing to minimize bend radius and verify clearances around the device nameplate. The 690 V AC rating and 600 A protection level should align with feeder specs and panel busbar arrangements to ensure safe, compliant operation.
Key specs include a 600 A amperage rating, 690 V AC voltage rating, and a short-circuit breaking capacity of 85 kAIC. The trip type is thermal-magnetic (T268), the device is three-pole, and it features a front-screw connection. The setting range is 600-600 A, providing a fixed overload protection suitable for distribution circuits up to 600 A.
Yes, the thermal-magnetic T268 trip mechanism supports motor loads with inrush characteristics by providing both overload and short-circuit protection. For motor control centers and panel feeders, this reduces nuisance trips while ensuring fast fault clearance, particularly when paired with compatible motor drives and protection coordination.
The NZMH4-AEF600-NA carries UL Listed certification, ensuring compliance with recognized safety standards for industrial electrical equipment. This certification supports safer field installations, easier customer audits, and smoother integration into UL-labeled panels and assemblies.
The device provides reliable, predictable protection with a fixed 600 A overload setting and high short-circuit capability, reducing unplanned outages. Front-screw mounting simplifies installation and future replacement, lowering labor costs. The UL Listed status also streamlines compliance processes, contributing to faster project approvals and a lower total cost of ownership.