Eaton NZMH4-VEF900-NA Molded Case Circuit Breaker - 85 kAIC at 480 Vac
Part Number: NZMH4-VEF900-NA
Quick Summary
Eaton NZMH4-VEF900-NA molded case circuit breaker protects industrial power systems in automation and manufacturing. Engineers often struggle with nuisance trips and protection coordination in high-load panels, especially where motor drives and generators are interconnected. The device provides selective protection with generator protection features, helping to isolate faults without interrupting healthy loads. It carries IEC rated, UL listed, and CSA certified marks to support global compliance. Designed for front-screw, bolt-on installation in the NZM4 frame, it enables efficient commissioning, straightforward maintenance, and scalable protection for growing facilities. This combination of rugged performance and easy integration translates into lower lifecycle costs and faster project delivery.
Product Information
Extended Description
NZMH4-VEF900-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, Selective and generator protection, Rocker lever, motor drive, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-VEF900-NA
UPC
786685631479
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
IEC Rated UL Listed CSA Certified
Type
Selective
Amperage Rating
900 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH4
Terminals
Bolt-on
Frame
NZM4
Class
Selective and generator 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 with 690 V AC operation and an 85 kAIC interrupt rating at 480 Vac. Business impact: Enables safe interruption of heavy fault currents in feeder circuits, protecting conductors and downstream devices. Application: Large motor feeders and high-load panels in manufacturing lines and data centers. Feature: NZM4 frame, three-pole construction, bolt-on terminals with front screw connections. Business impact: Simplifies retrofit and field installation, reducing labor time and wiring errors. Application: Modular switchgear and panel builds with easy on-site assembly. Feature: Selective protection and generator protection class (T268). Business impact: Improves selectivity to minimize outages and protects generating equipment, reducing downtime. Application: Critical in systems with parallel sources or standby generation. Feature: Rocker lever and motor drive accessories. Business impact: Ergonomic operation, quick status indication, and enhanced control during startup and shutdown. Application: Control panels and drive systems in automation environments. Feature: Certifications IEC rated, UL Listed, CSA Certified and a standard warranty. Business impact: Regulatory compliance across regions supports global deployments and protects procurement investments. Application: Global manufacturers needing cross-border compliance. Feature: Compact dimensions and weight (8.26 in L, 8.14 in H, 8.14 in W; 46 lb). Business impact: Space-efficient packaging and easier handling during installation. Application: Large electrical panels with space constraints.
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FAQs
NZMH4-VEF900-NA uses bolt-on terminals with a front screw connection and fits the NZM4 frame. For installation, align the unit with the panel cutout, secure via standard mounting hardware, and connect conductors to the front screws per local wiring codes. The rocker lever provides clear on-off indication and facilitates commissioning without removing protective covers.
The device offers selective protection and generator protection features within a three-pole frame, with an 85 kAIC interrupt rating. This arrangement minimizes nuisance outages, allows safe transfer between sources, and protects generators during fault conditions while maintaining downstream availability for critical loads.
Yes. The NZMH4-VEF900-NA is IEC rated, UL Listed, and CSA Certified, ensuring global regulatory compliance and compatibility across international panel builds. This certification mix supports multi-site deployments and reduces procurement risk when sourcing components for global manufacturing environments.
Key specs include a 900 A amperage rating, 690 V AC voltage rating, and 85 kAIC interrupt rating at 480 Vac. It is a three-pole NZMH4 frame device with front screw terminals, bolt-on connections, and selective protection with generator protection capabilities, suitable for motor feeders and high-load panels.
The product carries a one-year warranty from installation or 18 months from shipment, whichever comes first, reducing procurement risk. Its front-screw, bolt-on design simplifies replacements and service, while the compact NZM4 frame and available rocker lever/motor drive accessories shorten maintenance windows and help minimize downtime.