Eaton NZMH4-VEF800-NA Molded Case Breaker - 85 kAIC
Part Number: NZMH4-VEF800-NA
Quick Summary
Eaton NZMH4-VEF800-NA is a molded case circuit breaker designed for demanding industrial distribution applications. It provides precise thermal-magnetic protection for feeders, motors, and generator interfaces, helping prevent costly outages. In complex panels, nuisance trips and hard-to-reach wiring can derail uptime; this device is built for reliable coordination and easy maintenance. It carries UL Listed, CSA Certified, and IEC Rated certifications, supporting global compliance. The NZMH4 with an NZM4 frame supports selective and generator protection, and its front screw terminals and rocker lever streamline installation and service in control cabinets. By combining robust protection with straightforward integration, it reduces risk and improves overall electrical system availability and maintenance efficiency.
Product Information
Extended Description
NZMH4-VEF800-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip type, Three-pole, 800A, 690 Vac, 85 kAIC at 480 Vac, Selective and generator protection, Rocker lever, motor drive, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-VEF800-NA
UPC
786685631462
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 CSA Certified IEC Rated
Amperage Rating
800 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH4
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
Eaton Specification Sheet - NZMH4-VEF800-NA
Selling Policy 25-000 - Distribution and Control Products and Services
Feature and Benefit Overview: The NZMH4-VEF800-NA delivers an 800 A amperage rating for heavy feeders, enhancing protection while minimizing fuse swaps and unplanned downtime. Business impact: improved system reliability and reduced maintenance costs. Application: distribution panels and motor feeder circuits benefit from reliable load interruption and quick re-energization after fault clearing. Feature: Thermal-magnetic trip (T268) provides coordinated protection against both overloads and short circuits. Business impact: selective tripping reduces nuisance shutdowns and extends equipment life. Application: protects motors and drives in packaging, material handling, and process lines. Feature: 690 V AC rating with 85 kAIC interrupt capability at 480 VAC supports high-energy fault handling. Business impact: enhances safety margins and enables compliant fault clearance in large installations. Application: plant energization points, switchgear feeders, and main distribution panels. Feature: NZM4 frame, three-pole construction with front screw connections and rocker lever. Business impact: compact installation, accessible wiring, and faster maintenance. Application: retrofit into existing NZM4-based panels with minimal panel modifications. Feature: Selective and generator protection class enables coordinated protection strategies and generator interface safety. Business impact: reduces downtime risk during generator startup/shutdown and improves overall system uptime. Application: reliable protection for critical process lines and backup generation. Feature: Certifications and warranties provide procurement confidence and regulatory compliance. Business impact: lowers supplier risk and streamlines compliance reviews. Application: engineering specs, tender documentation, and long-term service planning.
Get a Quick Quote for a Eaton NZMH4-VEF800-NA
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton NZMH4-VEF800-NA?
Enquire Now
FAQs
NZMH4-VEF800-NA uses front screw terminals to simplify wiring access inside control panels. When installing, ensure appropriate conductor sizing per NEC/IEC standards, adequate panel clearance, and proper torque on terminals to maintain secure connections. The rocker lever facilitates quick operation during commissioning and maintenance, helping technicians verify circuit status without cumbersome panel access.
Key specs include an 800 A amperage rating, a 690 V AC voltage rating, a T268 thermal-magnetic trip type, a three-pole NZMH4 circuit-breaker design within an NZM4 frame, and an 85 kAIC interrupt rating at 480 VAC. These features support robust protection for heavy feeder circuits, motors, and power distribution panels in industrial environments.
Yes. The NZMH4-VEF800-NA is designed for selective and generator protection, enabling coordinated fault clearance and safe generator interfacing. Its three-pole configuration and robust interrupt capability make it well-suited for motor drives and generator-backed systems in manufacturing, packaging, and process industries, reducing downtime and enhancing control reliability.
The device is UL Listed, CSA Certified, and IEC Rated, signifying compliance with major North American and international standards. These certifications support global procurement, simplify customer approvals, and help ensure that protective equipment meets regulatory requirements for safety and performance in diverse markets.
Eaton applies its Selling Policy 25-000 warranty: one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. This covers manufacturing defects and provides a baseline for maintenance planning, ensuring support as part of a reliable protection strategy for industrial electrical systems.