Eaton NZMH4-VEF1000-NA Molded Case Breaker - UL Listed
Part Number: NZMH4-VEF1000-NA
Quick Summary
NZMH4-VEF1000-NA molded case circuit breaker provides reliable overload and short-circuit protection for industrial electrical panels. Engineers often struggle with coordinating protection schemes to minimize downtime and nuisance trips in high-demand networks. UL Listed certification underscores compliance with recognized safety standards, while the device’s selective and generator protection features help maintain uptime. This solution integrates seamlessly with the NZM4 frame, bolt-on terminals, and front-screw connections, delivering robust protection and straightforward installation for panel builders and maintenance teams alike.
Product Information
Extended Description
NZMH4-VEF1000-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip, Three-pole, 1000A, 690 Vac, 85 kAIC at 480 Vac, Bolt-on, Selective and gen. protect., 1000-1000A, Front screw, 1000-1000A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-VEF1000-NA
EAN
4015082711467
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
Amperage Rating
1000 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
Adjustment range short-circuit release
2000-10000A delayed, 2000-12000A delayed
Setting Range Ol Protector
1000-1000A
Short-circuit breaking capacity
85 kAIC
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Overload range
1000-1000A
Number of poles
Three-pole
Feature → Business Impact → Application: The NZMH4-VEF1000-NA uses a Thermal-magnetic trip (T268) and supports a 1000 A amperage rating with a 690 V AC voltage rating, enabling rapid fault isolation and protection coordination across large assemblies, reducing unplanned downtime in high-demand facilities. Application: industrial power distribution panels and process lines benefit from precise selectivity and generator protection, improving equipment life and safety. Feature → Business Impact → Application: Bolt-on terminals and front screw connections simplify installation and future retrofits, cutting commissioning time and labor costs while maintaining a secure, durable connection in harsh environments. Application: retrofit projects and new builds in manufacturing floors benefit from quick, reliable mounting and maintenance access. Feature → Business Impact → Application: The NZM4 frame and three-pole design provide consistent phase protection and easier expansion, supporting scalable protection schemes across evolving facilities. Application: multi-bay switchgear and centralized control rooms benefit from standardized protection architecture and reduced engineering time.
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FAQs
Yes. NZMH4-VEF1000-NA is designed for the NZM4 frame, featuring three-pole construction with bolt-on terminals and a front screw connection. This combination supports straightforward mounting in standard industrial switchgear and distribution panels, simplifies wiring diagrams, and reduces field wiring time during installation or retrofits.
The device is rated for 1000 A and 690 V AC, with a short-circuit breaking capacity of 85 kAIC. It uses a thermal-magnetic trip (T268) to balance fast nuisance-trip protection with reliable overload protection, enabling precise coordination in large electrical systems and generator protection scenarios.
Yes. The NZMH4-VEF1000-NA is specified for selective and generator protection, allowing precise fault isolation to maintain critical loads. Its 3-pole design and high interrupt rating support reliable protection of alternators and associated feeders, reducing the risk of wider outages in power generation and distribution networks.
The breaker is UL Listed, providing recognized safety certification for electrical protection devices used in North American installations. This certification supports compliance with standard industry practices for safe operation, installation, and maintenance in industrial environments.
Maintenance benefits include front-access connections and compatible accessories (rocker lever, motor drive) that simplify service and upgrades. The robust bolt-on interface and verified protection features reduce downtime during fault isolation and replacement, leading to lower lifecycle costs and higher equipment availability in manufacturing and processing facilities.