Eaton NZMH2-A40-BT-NA Molded Case Breaker - UL Listed
Part Number: NZMH2-A40-BT-NA
Quick Summary
Eaton NZMH2-A40-BT-NA molded case circuit breaker protects electrical distribution in industrial facilities. Choosing protection for variable fault currents and demanding duty cycles can slow projects and increase risk. UL Listed certification confirms safety-standard compliance, while the front-frame clamp design simplifies installation in tight panels. Ideal for power distribution in manufacturing and process automation, it integrates with NZM2 frame gear and standard control panels. The adjustable thermal and magnetic trip lets engineers tailor protection to real load profiles, reducing nuisance trips and extending equipment life. For panel builders, standardized mounting speeds assembly and minimizes commissioning time. This device delivers reliable protection with measurable outcomes in uptime, safety, and total cost of ownership.
Product Information
Extended Description
NZMH2-A40-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, Adj. thermal, adj. magnetic trip, Three-pole, 40A, 690 Vac, 750 Vdc, 85-150 kAIC, Box, Distribution circuit protect., 32-40A, Front frame clamp, 32-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-A40-BT-NA
EAN
4015081074471
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
4.1 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
Certifications
UL Listed
Amperage Rating
40 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
Adjustable thermal, adjustable magnetic
Circuit breaker type
NZMH2
Terminals
Box
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
320-400A delayed
Setting Range Ol Protector
32-40A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
85-150 kAIC
Connection
Front frame clamp
Overload range
32-40A
Number of poles
Three-pole
Power Xpert Protection Manager x64
Eaton Specification Sheet - NZMH2-A40-BT-NA
Intelligent power starts with accurate, actionable data
Feature: 40 A amperage rating with a 690 Vac / 750 Vdc capability. Business Impact: Enables reliable protection for mid-range feeders, reducing overload events and enabling steady uptime in distribution panels. Application: Ideal for power distribution in manufacturing lines, process automation cabinets, and control panels that rely on the NZM2 frame. Feature: Adjustable thermal and magnetic trip. Business Impact: Allows precise coordination with load profiles, cutting nuisance trips and extending motor life. Application: Supports drive systems, conveyors, and machine tools in industrial environments. Feature: Short-circuit breaking capacity up to 150 kAIC with an interrupt rating of 85-150 kAIC. Business Impact: High fault-current resilience guards downstream equipment and minimizes downtime during faults. Application: Critical for large motors, high-energy feeders, and demanding distribution networks. Feature: Three-pole design with front-frame clamp and box terminals. Business Impact: Ensures uniform protection across phases while enabling fast, front-access installation and service in crowded panels. Application: Standard in distribution boards and control cabinets for easy replacement and maintenance. Feature: Accessories such as rocker lever and motor drive. Business Impact: Improves operator interaction and enables easier commissioning and remote control integration. Application: Suitable for OEM panel builds and retrofit projects needing quick adaptation to evolving control schemes. Feature: NZM2 frame compatibility and UL Listed certification. Business Impact: Aligns with established safety architectures and procurement standards, simplifying sourcing and audits. Application: Fits standard NZM2-based installations and new builds requiring UL certification and robust distribution circuit protection.
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FAQs
The NZMH2-A40-BT-NA uses front-frame clamp terminals for straightforward mounting in standard control panels. Ensure proper phasing across the three poles, tighten connections to box terminals per the installation guidelines, and set the adjustable thermal/magnetic trip to match the panel’s load profile. Always follow local safety procedures and manufacturer recommendations.
The device is rated for 40 A with a voltage rating of 690 Vac and 750 Vdc. It features adjustable thermal and magnetic trip, a short-circuit breaking capacity up to 150 kAIC, and an interrupt rating in the range of 85–150 kAIC. It is a three-pole NZMH2 molded case breaker designed for distribution protection.
Yes. The three-pole NZMH2 with a 40 A rating and 690 Vac / 750 Vdc capability is designed for distribution circuit protection in industrial panels. Its front-frame clamp and box terminals streamline installation, while the adjustable trip allows tailoring to varying load profiles common in manufacturing environments.
The NZMH2-A40-BT-NA is UL Listed, indicating compliance with recognized safety standards for electrical protection devices. This certification supports compliance requirements in many regions, simplifies audits, and provides assurance during procurement for safety-conscious facilities.
Warranty terms follow Eaton’s policy, typically one year from installation or eighteen months from shipment, whichever comes first. Routine maintenance includes inspection of terminations, verification of trip settings, and periodic functional testing to ensure continued protection and reliability in the panel.