Eaton NZMN1-A40-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMN1-A40-NA
Quick Summary
NZMN1-A40-NA molded case circuit breaker protects industrial power systems by interrupting fault currents in distribution panels. Engineers face nuisance trips and downtime during peak loads, which this unit helps minimize with a precise 40 A rating and a robust 50 kAIC interrupt capacity. UL Listed certification assures compliance and safety, while Eaton’s warranty simplifies long-term reliability in mid- to high-voltage environments. The NZMN1 frame fits standard NZM1 assemblies and features front-frame clamp connections for quick installation in front- or rear-access panels. With a 320–400 A trip rating and a 32–40 A setting range, it balances protection and selectivity across motor feeders and process lines, delivering measurable value for manufacturing floors and critical infrastructure.
Product Information
Extended Description
NZMN1-A40-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMN1, Thermal-magnetic trip, 320-400A trip rating, Three-pole, 40A, 690 Vac, 500 Vdc, 50 kAIC, Distribution circuit protection, 32-40A, Front frame clamp, 32-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN1-A40-NA
EAN
4015082742379
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
2.45 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, 500 Vdc
Trip Type
T268
Circuit breaker type
NZMN1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
32-40A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front frame clamp
Overload range
32-40A
Number of poles
Three-pole
Trip rating
320-400 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMN1-A40-NA
Feature: 40 A amperage rating with 690 Vac and 500 Vdc voltage ratings, plus a 50 kAIC short-circuit capacity. Business Impact: Delivers dependable overload protection for feeders while supporting reliable motor control and minimal downtime. Application: Suitable for distribution panels in manufacturing cells and industrial plants, where precise protection limits unnecessary trips and protects downstream equipment. Long-tail keywords addressed include molded case circuit breaker, 40 A MCCB, and 50 kAIC protection. Feature: Three-pole design with NZMN1 frame and front-frame clamp connection. Business Impact: Improves protection coordination and simplifies installation, reducing field wiring time and error potential. Application: Ideal for three-phase feeders in line power systems and panel assemblies that require fast, secure mounting in both front- and rear-access installations. Keywords integrated: three-pole MCCB, NZMN1 frame, front-frame clamp, distribution circuit protection. Feature: Setting range 32–40 A and trip rating 320–400 A. Business Impact: Enables precise selectivity for motor starters and feeders, optimizing protective curves and energy costs. Application: Critical in process lines and equipment bays where selective tripping minimizes disruption while maintaining safety. Keywords: 32–40 A setting, trip rating, selective protection. Feature: 50 kAIC interrupt capacity and UL Listed certification. Business Impact: Offers robust fault current handling and proven safety compliance, reducing the risk of equipment damage during faults. Application: Suitable for high-energy environments and systems requiring certified protection, with ongoing vendor support from Eaton. Keywords: UL Listed, high fault current, safety certification. Feature: Front-frame clamp, Rocker lever accessory option, and 690 Vac / 500 Vdc compatibility. Business Impact: Streamlines installation in tight panels and with adjustable accessories, boosting field efficiency and serviceability. Application: Ideal for distribution panels in industrial automation and electrical protection schemes. Keywords: front-frame clamp, rocker lever, 690 Vac, 500 Vdc.
Get a Quick Quote for a Eaton NZMN1-A40-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 NZMN1-A40-NA?
Enquire Now
FAQs
Install the NZMN1-A40-NA using the front-frame clamp for secure mounting in NZM1-based panels. Ensure the panel is rated for 690 Vac and verify a 32–40 A setting range before commissioning. Connect conductors per manufacturer torque specs and verify alignment with downstream devices to maintain proper coordination.
The NZMN1-A40-NA has a short-circuit breaking capacity of 50 kAIC, enabling safe interruption of fault currents up to that level. Verify system fault levels and upstream protection to ensure full coordination and minimize device damage during faults.
Yes. The device is rated for 690 Vac and 500 Vdc, with a three-pole configuration, making it well-suited for distribution panels supplying industrial equipment and control circuitry while meeting safety and performance requirements.
The NZMN1-A40-NA is UL Listed, indicating compliance with recognized safety standards. For region-specific requirements, consult Eaton or the official regulatory guidance to confirm additional certifications or approvals.
Eaton provides a warranty under policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. After-sales support includes access to Eaton’s technical resources and replacement parts to ensure continued reliability of the protection scheme.