Eaton NZMH3-AE400-NA Molded Case Circuit Breaker - 100 kAIC
Part Number: NZMH3-AE400-NA
Quick Summary
NZMH3-AE400-NA molded case circuit breaker provides reliable protection for motor drives and distribution panels in industrial environments. In complex electrical systems, nuisance trips and unplanned downtime threaten productivity; this unit offers a precise thermal-magnetic trip and user-friendly front wiring to minimize outages. It supports UL/CSA listings and IEC compliance, helping you meet global safety requirements without juggling vendors. Designed for 400 A loads and 100 kAIC capacity, it delivers robust protection for motor drives and distribution circuits while simplifying procurement and maintenance through a single, compatible solution.
Product Information
Extended Description
NZMH3-AE400-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM3-frame, NZMH3, Thermal-magnetic trip, Three-pole, 400A, 100 kAIC at 480 Vac, Dist. circuit protection, motor drive, 200-400A, 800-4400A delayed, 200-400A, conforms to UL/CSA and IEC
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH3-AE400-NA
EAN
4015082693039
Product Length/Depth
5.51 in
Product Height
6.53 in
Product Width
6.53 in
Product Weight
14 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.
Compliances
Contact Manufacturer
Amperage Rating
400 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH3
Frame
NZM3
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
800-4400A delayed
Setting Range Ol Protector
200-400A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
100 kAIC at 480 Vac
Connection
Front screw
Overload range
200-400A
Number of poles
Three-pole
Compact circuit-breakers and switch-disconnectors up to 1600 A
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: 1) Thermal-magnetic trip with 400 A rating reduces nuisance trips and improves protection coordination in motor drive applications, translating to lower downtime and safer start-up sequences in automation panels. 2) 690 V AC rating supports high-performance electrical protection for industrial plants, enabling scalable distribution protection across multi-bay switchboards. 3) 100 kAIC short-circuit capacity at 480 VAC provides robust fault clearance for demanding loads, increasing equipment uptime in corrugated manufacturing lines and process controls. 4) NZM3 frame with three poles and front screw connections simplifies installation and field maintenance, reducing commissioning time and error potential. 5) Accessories such as rocker lever and motor drive compatibility offer flexible integration into existing control schemes, improving lifecycle value and reducing spare-part variety. 6) UL/CSA and IEC compliance supports global deployments, ensuring regulatory alignment and safer cross-border procurement.
Get a Quick Quote for a Eaton NZMH3-AE400-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 NZMH3-AE400-NA?
Enquire Now
FAQs
For panel integration, ensure front screw terminations are accessible and the enclosure footprint accommodates the NZM3 frame. Check wiring routes to avoid sharp bends, verify compatible bus bar spacing, and confirm the 690 V AC rating aligns with system voltage. The device supports 3-pole configurations and includes motor-drive compatibility options such as rocker lever accessories to streamline commissioning.
The T268 trip class defines the curve characteristics for short-circuit protection, offering fast response for high-energy faults while avoiding nuisance trips during transient events. In practice, this improves protection coordination with downstream devices, reduces arc flash exposure during faults, and enhances overall system reliability in motor drives and distribution circuits.
Yes. The 400 A rating and 690 V AC capability, combined with a 100 kAIC short-circuit capacity, make it well-suited for motor-drive protection and high-energy distribution sections. While the device’s enclosure integrity depends on the specific installation, its rugged NZM3 frame is designed for demanding industrial applications with reliable fault clearance.
The NZMH3-AE400-NA is designed to align with UL/CSA and IEC standards, supporting global integration in panels and assemblies. Compliance facilitates safer operation, easier certification processes for end users, and smoother procurement across international sites, reducing the need for multiple device variants while maintaining rigorous safety criteria.
By delivering robust protection with a 100 kAIC capacity and a precise thermal-magnetic trip, the device reduces unplanned outages and equipment damage, translating to lower downtime and maintenance costs. Front screw terminals simplify wiring and diagnostics, reducing commissioning time and spare-parts diversity, which contributes to lower total cost of ownership over the panel’s lifecycle.