Eaton NZMH4-VE800-NA Molded Case Circuit Breaker - 690V
Part Number: NZMH4-VE800-NA
Quick Summary
NZMH4-VE800-NA Molded Case Circuit Breaker provides robust overcurrent protection for motor drives in industrial equipment. A common challenge in power systems is coordinating protective devices to prevent nuisance trips while safeguarding costly drives and motors. It carries CSA Certified, IEC Rated, and UL Listed certifications to support regulatory compliance and reliable performance. With an 800 A rating at 690 V and an 85 kAIC interrupt capacity at 480 V, it enables selective protection and generator protection, aligning with uptime goals. This solution supports panel builders and maintenance teams by delivering dependable protection in a compact form factor and streamlining installation in demanding environments.
Product Information
Extended Description
NZMH4-VE800-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, 400-800A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-VE800-NA
UPC
786685631523
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
CSA Certified IEC Rated UL Listed
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
Overload range
400-800A
Number of poles
Three-pole
Feature → Business Impact → Application: Thermal-magnetic trip (T268) provides fast, selective disconnection for motor faults, reducing fault cascades and extending motor life in conveyor systems and processing lines. This translates to lower maintenance costs and higher line uptime in manufacturing environments. Application: suitable for three-pole motor drives and equipment protected by NZM4 frames. Feature → Business Impact → Application: 800 A amperage rating at 690 VAC enables direct protection for high-load motors and power circuits, supporting scalable plant expansions and reducing the need for mid-life hardware upgrades. Application: critical for large motors, pumps, and compressor stations in heavy industry. Feature → Business Impact → Application: 85 kAIC interrupt capacity at 480 VAC delivers strong short-circuit withstand, improving safety margins in medium- to high-energy applications. Application: essential for generator protection scenarios and switchgear assemblies where fault energy must be controlled. Feature → Business Impact → Application: Front screw connection and rocker lever provide quick, tool-friendly installation and dependable operability in tight panels. Application: streamlined commissioning for OEMs, panel builders, and retrofit projects. Feature → Business Impact → Application: Class is defined as selective and generator protection, enabling coordinated protection schemes across drives and generation sources. Application: ideal for plants seeking improved protection coordination and reduced downtime in motor-driven processes.
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FAQs
The NZMH4-VE800-NA uses a front screw connection and a rocker lever for straightforward mounting in three-pole panel assemblies. Its NZM4 frame is designed for compatibility with standard molded case breaker enclosures, enabling quick replacement or integration into existing switchgear. For best results, ensure correct torque on terminals and verify alignment with panel bus connections to maintain proper coordination with adjacent devices.
This device features a thermal-magnetic trip type (T268) with an 800 A continuous amperage rating and a 690 V AC voltage rating. It provides a high interrupt rating of 85 kAIC at 480 VAC, supporting safe interruption during short-circuit events. The combination supports selective protection, improved reliability for motor drives, and compatibility with generator protection schemes.
Yes. The NZMH4-VE800-NA is designed for motor drive protection with its selective and generator protection class. It accommodates high-current motor loads (800 A at 690 VAC) and supports coordinated protection strategies across drives, pumps, and conveyors. Its front-access installation and available motor-drive accessories facilitate integration in busy manufacturing lines.
The device carries CSA Certification, IEC rating, and UL Listing, ensuring compliance with North American and international electrical safety and performance standards. These certifications support safe integration into regulated installations, equipment upgrades, and plant-wide protection schemes across industrial facilities.
The NZMH4-VE800-NA offers reliable protection with a defined warranty and durable construction typical of Eaton’s protection devices. By reducing nuisance trips and enabling selective protection for motor drives and generators, it lowers downtime costs and extends asset life. Its robust ratings help minimize unexpected outages, contributing to lower maintenance spend and improved ROI over the equipment’s life cycle.