Eaton NZMH4-AEF900-NA NZM complete molded case circuit breaker - 85 kAIC
Part Number: NZMH4-AEF900-NA
Quick Summary
NZMH4-AEF900-NA is a molded case circuit breaker that protects distribution panels and motor drives. Engineers often struggle with space constraints, retrofit challenges, and reliably coordinating high fault currents in legacy switchgear. UL Listed, IEC Rated, and CSA Certified, this solution delivers dependable protection and regulatory compliance. Designed for fast installation and simple maintenance, it combines bolt-on mounting with front screw terminals, helping reduce downtime while delivering robust distribution circuit protection for industrial facilities.
Product Information
Extended Description
NZMH4-AEF900-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip type, Three-pole, 900A, 690 Vac, 85 kAIC at 480 Vac, Bolt-on, Distribution circuit protection, Rocker lever, motor drive, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-AEF900-NA
UPC
786685631363
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 IEC Rated CSA Certified
Amperage Rating
900 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
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Number of poles
Three-pole
Feature: 900 A amperage rating within the NZM4 frame provides robust protection for high-current feeders. Business Impact: Supports safe load interruption and reduces nuisance trips in demanding industrial environments. Application: Distribution circuits feeding motor drives and large equipment setups. Feature: 690 V AC voltage rating and 85 kAIC interrupt capability at 480 VAC deliver strong fault-current handling. Business Impact: Minimized arc exposure and improved system reliability in medium- to high-energy applications. Application: Industrial power distribution where motor drives and conveyors demand solid fault-clearing performance. Feature: Thermal-magnetic trip type (T268) ensures accurate protection coordination and selectivity. Business Impact: Prevents unnecessary shutdowns while safeguarding equipment and personnel. Application: Critical panels in manufacturing lines and process control cabinets. Feature: Front screw terminals and bolt-on mounting streamline installation and retrofit projects. Business Impact: Faster commissioning, reduced wiring complexity, and easier field maintenance. Application: Panel upgrades and new builds with limited clearance or retrofit requirements. Feature: Rocker lever and motor-drive accessories enhance operability and status indication. Business Impact: Intuitive operation lowers training time and operator error, improving uptime. Application: Motor-control centers and distribution cabinets where quick action is essential. Feature: UL Listed, IEC Rated, CSA Certified certifications ensure compliance across global standards. Business Impact: Simplifies procurement for multinational facilities and eases regulatory audits. Application: Industries with strict safety and performance requirements, including food, pharma, and packaging.
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FAQs
Yes. The NZMH4-AEF900-NA uses front screw terminals and bolt-on mounting, making it suitable for retrofit projects and new panel builds. Its NZM4 frame is designed for straightforward alignment with compatible enclosures and standard mounting panels, which minimizes rework and enables faster commissioning.
Key specs include 900 A amperage rating, 690 V AC voltage rating, three-pole configuration, T268 thermal-magnetic trip type, and 85 kAIC interrupt rating at 480 VAC. These ensure adequate protection for distribution circuits and motor drives while maintaining coordination with upstream devices.
Yes. The unit is UL Listed, IEC Rated, and CSA Certified, providing broad regulatory acceptance for multinational installations and simplifying compliance during audits and vendor qualification processes.
Benefits include reduced downtime due to reliable protection, fewer nuisance trips, faster installation with bolt-on terminals, and long-term energy efficiency from proper protection coordination. For high-current motor drives, the high interrupt rating also minimizes arc fault risk, lowering maintenance costs over time.
The product carries Eaton's standard warranty: one year from installation or eighteen months from shipment, whichever occurs first. In addition, customers have access to Eaton technical support, datasheets, and replacement parts to ensure ongoing reliability.