Eaton NZMH4-VEF1200-NA MCCB - NZM4, UL Listed
Part Number: NZMH4-VEF1200-NA
Quick Summary
NZMH4-VEF1200-NA is a high-capacity molded case circuit breaker designed for industrial power distribution protection. Engineers rely on it to deliver reliable selective and generator protection across complex motor and load schemes. This device meets essential standards, including CSA Certified, IEC Rated, and UL Listed, ensuring regulatory compliance and safe operation in diverse markets. By integrating with the NZM4 frame, front-screw connections, and bolt-on terminals, it simplifies installation and maintenance in control panels and switchgear. The 1200 A rating at 690 V AC translates to scalable protection for large drives and critical loads, while the compact footprint supports space-constrained panels. This combination delivers uptime, safety, and cost efficiency for modern industrial facilities.
Product Information
Extended Description
NZMH4-VEF1200-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip type, Three-pole, 1200A, 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-VEF1200-NA
UPC
786685631486
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
Type
Selective
Amperage Rating
1200 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: 1200 A amperage rating at 690 V AC enables protection of large feeders and motor drives. Business Impact: Supports scalable protection without oversizing panels, reducing capital expenditure while maintaining safety. Application: Large industrial power distribution systems and high-capacity motor control centers benefit from this rating. Feature: Thermal-magnetic trip type (T268) provides reliable instantaneous and time-delayed tripping. Business Impact: Minimizes nuisance trips and improves selectivity across multi-load circuits, lowering maintenance costs. Application: Motor drives and critical loads in manufacturing lines require precise coordination. Feature: NZM4 frame compatibility with three-pole bolt-on terminals and front screw connection. Business Impact: Streamlines installation, reduces assembly time, and simplifies field replacement while maintaining robust mechanical integrity. Application: Panel builders and retrofit projects in control cabinets. Feature: Class Selective and generator protection with 85 kAIC interrupt rating at 480 Vac. Business Impact: Enhances system resilience against faults and generator transients, protecting upstream equipment and improving uptime. Application: Plant power distribution, generator-based fallback systems, and critical processes. Feature: Accessories including rocker lever and motor drive support. Business Impact: Improves operability and control fidelity, enabling quick manual operation and integration with motor control strategies. Application: Everyday maintenance and automated startup sequences in industrial settings. Feature: Certifications CSA Certified, IEC Rated, UL Listed. Business Impact: Ensures compliance with global standards, easing procurement across regions and reducing regulatory risk. Application: Global manufacturing environments with strict safety and performance requirements.
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FAQs
The NZMH4-VEF1200-NA is designed for bolt-on installation on the NZM4 frame with front screw terminals. This layout supports quick field mounting, straightforward alignment with adjacent devices, and secure mechanical capture. Use the rocker lever for manual operation and ensure correct tightening torque on the front-screw connections to maintain electrical integrity during servicing.
Key specs include a 1200 A amperage rating, 690 V AC voltage rating, and an 85 kAIC interrupt rating at 480 Vac. The trip type is thermal-magnetic (T268), enabling coordinated protection for motors and feeders while blocking nuisance trips. These features support reliable protection for high-current applications and complex load profiles.
Yes. The NZMH4-VEF1200-NA offers selective protection and generator protection within the NZM4 frame, aligning with common generator start-up transients and fault scenarios. This makes it suitable for standby or prime generator configurations where reliable isolation and fault management are critical to uptime.
This breaker is CSA Certified, IEC Rated, and UL Listed. These certifications validate safety and performance across North American and international markets, simplify procurement for regulated industries, and help ensure compliance with safety standards in OEM and maintenance projects.
The bolt-on mounting, front-screw terminals, and rocker lever simplify installation and field servicing, reducing labor time and downtime. Its 1200 A/690 V rating and 85 kAIC capacity support durable protection for critical loads, improving uptime and reducing repair costs, which translates to a favorable return on investment over the equipment lifecycle.