Eaton NZMH4-AE800-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMH4-AE800-NA
Quick Summary
NZMH4-AE800-NA molded-case circuit breaker protects industrial power distribution and machine controls. Design engineers often battle balancing robust protection with straightforward field adjustments across a 400–800 A range. UL Listed certification supports safety compliance, while front-screw mounting and a three-pole NZM4 frame simplify installation. With a 690 V AC rating and 85 kAIC short-circuit capacity, this device delivers reliable protection in demanding panels and motor drives. Optional rocker lever and motor-drive accessories expand retrofit options, helping minimize downtime and optimize maintenance across industrial facilities. This combination translates to predictable protection curves, easier procurement, and consistent performance across Eaton's distribution solutions.
Product Information
Extended Description
NZMH4-AE800-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM4-frame, NZMH4, Thermal-magnetic trip, 1600-9600A delayed, Three-pole, 800A, 690 Vac, 85 kAIC at 480 Vac, Distribution circuit protection, 400-800A, Front screw, 400-800A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH4-AE800-NA
EAN
4015082711238
Product Length/Depth
8.26 in
Product Height
8.14 in
Product Width
8.14 in
Product Weight
8.3 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
800 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH4
Frame
NZM4
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Setting Range Ol Protector
400-800A
Short-circuit breaking capacity
85 kAIC
Interrupt rating
85 kAIC at 480 Vac
Connection
Front screw
Overload range
400-800A
Number of poles
Three-pole
Feature: 800 A amperage rating enables protection for high-load feeders. Business impact: Supports scalable distribution without oversizing components, reducing total cost of ownership. Application: Main feeders in industrial panels and machine centers. Feature: Thermal-magnetic trip provides selective coordination and fast fault interruption. Business impact: Minimizes downtime and equipment damage, improving safety and reliability. Application: Heavy manufacturing lines and process controls. Feature: 690 V AC voltage rating with 85 kAIC short-circuit capacity. Business impact: Withstands high fault currents without nuisance tripping, ensuring continuity of critical processes. Application: Large motor drives and high-energy distribution networks. Feature: Front screw connection simplifies field installation. Business impact: Reduces commissioning time and enclosure modification needs, lowering installation risk. Application: Retrofit projects and new panel builds. Feature: NZM4 frame with three poles ensures consistent multi-pole protection. Business impact: Streamlines panel design and spares stocking with standardized components. Application: Distribution cabinets and MCCs across plant floors. Feature: Optional rocker lever and motor-drive accessories enhance control options. Business impact: Improves operator ergonomics and drive integration, supporting smooth automation upgrades. Application: Machine controls and conveyor systems. Feature: 400–800 A setting range offers flexible protection. Business impact: Allows precise protection tuning to protect varying loads while avoiding nuisance trips. Application: Panel boards with diverse load profiles.
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FAQs
The NZMH4-AE800-NA uses a front screw connection, enabling straightforward mounting without rear-terminal work. Ensure panel cutouts match the NZM4 frame, align the breaker with the bus bars, and tighten screws to the manufacturer’s torque specification. For retrofits, verify clearance and accessory compatibility such as rocker lever options to maintain operator ergonomics and test protection sequencing.
This device delivers an 800 A amperage rating, 690 V AC voltage rating, and 85 kAIC short-circuit breaking capacity at 480 V. It is a three-pole NZMH4 unit within the NZM4 frame, with a 400–800 A setting range and a thermal-magnetic trip. These specs support robust distribution protection for large feeders and motor-drive applications.
Yes. The 800 A rating, 690 V AC capability, and 85 kAIC fault interrupt capacity make NZMH4-AE800-NA appropriate for motor drives and high-current panel protection. Its three-pole design and front-access installation simplify integration into MCCs and distributed loads, while available accessories can further tailor protection and control in automation setups.
The product is UL Listed, confirming compliance with recognized safety standards for electrical protection devices. This certification supports safe installation in North American electrical environments and aligns with industry expectations for distribution circuit breakers in industrial facilities.
Warranty follows Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, use the approved accessories (rocker lever, motor drive) and follow standard conditioning checks on trip units, contact mechanics, and terminal torque. Regularly verify trip settings within the 400–800 A range to sustain reliable protection.