Eaton NZMH2-A40 NZM2 Circuit Breaker - UL Listed
Part Number: NZMH2-A40
Quick Summary
NZMH2-A40 is a rugged Eaton NZM2 complete molded case circuit breaker designed for distribution protection in industrial electrical systems. Engineers often struggle with selecting protection that matches motor-drive requirements, fits in compact panels, and minimizes downtime. This model supports an adjustable thermal and magnetic trip, three-pole configuration, and front-access installation, helping you streamline commissioning in control panels and industrial equipment. While the data shows UL Listed certification, CE, SIL, and IP ratings are not specified here and should be verified for your regional compliance. The combination of precise trip settings, robust protection, and a compact footprint delivers value for industrial automation and control panel design projects.
Product Information
Extended Description
NZMH2-A40 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, Adj. thermal, Adj. magnetic trip, Three-pole, 40A, 750 Vdc, Dist. circuit protection, Rocker lever, motor drive, 32-40A, 320-400A delayed, 32-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-A40
EAN
4015082590956
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.
Certifications
UL Listed
Amperage Rating
40 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
Adjustable thermal, adjustable magnetic
Circuit breaker type
NZMH2
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 screw
Overload range
32-40A
Number of poles
Three-pole
Eaton Specification Sheet - NZMH2-A40
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Adjustable thermal and magnetic trip enables precise overcurrent protection. Business Impact: Reduces nuisance trips while safeguarding motors and circuits, lowering unplanned downtime. Application: Motor drives and process equipment in manufacturing lines. Feature: Three-pole design with NZM2 frame supports balanced protection and easy integration in standard switchgear. Business Impact: Simplifies panel design, improves electrical coordination, and enhances serviceability. Application: Distribution panels and machine control centers. Feature: Front screw connection and rocker lever option streamline installation and maintenance. Business Impact: Faster wiring and safer field servicing, reducing total installation cost. Application: New builds and retrofit projects in industrial facilities. Feature: 40 A rating with 690 Vac / 750 Vdc rating and 150 kAIC short-circuit capacity. Business Impact: Provides robust short-circuit resilience and drives safer energy distribution. Application: Heavy-duty equipment and motor-driven systems. Feature: Delayed 320-400 A short-circuit release setting and 32-40 A OL protector range support selectivity. Business Impact: Enables coordinated protection and phased tripping for complex circuits. Application: Power distributions with multiple loads. Insight: The NZMH2-A40 aligns with industry standards for distribution circuit protection and offers compatibility with motor-drive protection strategies in modern automation environments.
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FAQs
NZMH2-A40 uses a front screw connection and is built on the NZM2 frame, ensuring compatibility with standard panel layouts and DIN rail or fixed mounting in distribution cabinets. The rocker lever accessory aids field operation, while the three-pole design supports straightforward wiring, making retrofits and new builds faster and less error-prone.
Key specs include a 40 A rating, voltage tolerance of 690 Vac / 750 Vdc, adjustable thermal and magnetic trip, and a short-circuit rating of 150 kAIC with an interrupt rating of 85-150 kAIC. These figures support reliable motor-drive protection, controlled inrush management, and improved coordination with downstream protection devices.
Yes. The three-pole NZMH2-A40 with an adjustable trip provides selective protection for multi-load panels and motor-driven equipment. Its 32-40 A OL protector range and 320-400 A short-circuit release support coordinated protection, reducing downtime while maintaining safety in automation and manufacturing environments.
This model is UL Listed as per the datasheet. CE, SIL, and IP ratings are not specified in the provided data; verify regional compliance requirements with Eaton or your authorized distributor to ensure full regulatory alignment for your installation and industry sector.
The product adheres to Eaton's warranty framework, with the Selling Policy 25-000 detailing coverage terms. Typically, warranties are valid for one year from installation or eighteen months from shipment, whichever occurs first. For exact terms and service, consult Eaton directly or the authorized channel you purchase from.