Eaton NZMH2-4-A32 Molded Case Breaker - 150 kAIC
Part Number: NZMH2-4-A32
Quick Summary
The Eaton NZMH2-4-A32 molded case breaker protects distribution circuits in industrial electrical panels. It helps prevent nuisance trips and drift during commissioning, reducing unplanned downtime and maintenance costs. In the market, certifications like CE marking and IP ratings are common expectations, so confirm Eaton's approvals for this model. With a 690 Vac / 750 Vdc rating and adjustable thermal-magnetic trip, it supports flexible distribution protection. This combination enables reliable uptime, efficient maintenance planning, and scalable protection strategy for industrial facilities. Designed for installers and procurement teams, it combines rugged protection with flexible mounting options. By standardizing on NZMH2-4-A32, engineering teams can simplify spare parts inventory and accelerate panel upgrades.
Product Information
Extended Description
NZMH2-4-A32 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMH2, adj. thermal, adj. magnetic trip, Four-pole, 32A, 690 Vac, 750 Vdc, 85-150 kAIC, Distribution circuit protection, 25-32A, 350-350A delayed, Front screw, 25-32A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH2-4-A32
EAN
4015082812911
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
5.17 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
32 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
350-350A delayed
Setting Range Ol Protector
25-32A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
85-150 kAIC
Connection
Front screw
Overload range
25-32A
Number of poles
Four-pole
Eaton Specification Sheet - NZMH2-4-A32
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Adjustable thermal-magnetic trip provides coordinated protection with minimal nuisance trips. Business Impact: Reduces downtime and maintenance costs by ensuring only truly faulted circuits trip. Application: Ideal for distribution panels and motor control centers where precise protection is required. Feature: Four-pole NZMH2 frame supports balanced three-phase protection with high fault energy tolerance. Business Impact: Increases grid resilience and safety in industrial automation environments. Application: Suitable for switchgear and large panel boards in manufacturing and processing facilities. Feature: Setting range 25-32 A with 350-350 A delayed short-circuit release enables tailored coordination. Business Impact: Improves selectivity and faster fault clearing without unnecessary shutdowns. Application: Used in feeder circuits and motor protection schemes. Feature: Front screw connections and front-access design simplify installation and maintenance. Business Impact: Accelerates commissioning and reduces labor costs in tight enclosures. Application: Petrochemical, food & beverage, and general manufacturing environments. Feature: Optional rocker lever and motor drive accessories enhance operability and remote control capability. Business Impact: Improves usability for maintenance crews and supports automation integration. Application: Panel builders seeking ergonomic, scalable protection solutions. Feature: Warranty and compliance framework, with Eaton’s policy guidance and documented performance parameters. Business Impact: Reduces risk and provides predictable service life for critical protection devices. Application: Any industrial facility demanding reliable protection and clear procurement requirements.
Get a Quick Quote for a Eaton NZMH2-4-A32
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 NZMH2-4-A32?
Enquire Now
FAQs
NZMH2-4-A32 uses a four-pole configuration with front screw terminals compatible with NZM2 frames. Start by ensuring correct busbar alignment, mount the breaker in the designated slot, tighten all front screws to the manufacturer’s torque specification, and connect control wiring as per the Eaton wiring diagram. Verify lockout/tagout procedures before commissioning and test the adjustable thermal-magnetic trip settings to match your protection scheme.
Set the overload range to 25-32 A to align with the 32 A rating, and enable the delayed short-circuit release at 350 A for coordination with upstream protections. The adjustable thermal-magnetic trip allows tailoring to motor inrush and fault conditions. Always validate settings with a calibrated test to ensure coordinated selectivity and acceptable fault clearing times in your panel.
Yes. The four-pole design enables three-phase protection essential for motor circuits, with adjustable thermal and magnetic trip to match motor startup currents. Its high interrupt capacity supports fault energy management in motor starter assemblies, while the 25-32 A setting range helps coordinate with upstream protective devices, reducing nuisance trips during normal operation.
Specific certifications are not listed in the provided data; compliance details should be confirmed with Eaton. In practice, verify CE markings, UL listings, IP ratings, and regional approvals with Eaton to ensure the unit meets your facility’s regulatory requirements and installation standards.
The NZMH2-4-A32 provides reliable protection with an adjustable trip, enabling long service intervals and predictable maintenance windows. Front-access installation simplifies servicing, while optional accessories like a rocker lever and motor drive improve operability. The combination reduces downtime, extends panel life, and supports streamlined spare-part inventories, delivering tangible operational savings over time.