Eaton NZMN1-AF40-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMN1-AF40-NA
Quick Summary
NZMN1-AF40-NA molded case circuit breakers provide reliable overcurrent protection for industrial distribution panels. Engineers often struggle to specify devices that meet both high fault current demands and compact installation constraints. This model uses a thermal-magnetic trip with a 50 kAIC short-circuit rating and a 690 Vac / 500 Vdc rating, while being UL Listed for safety. The NZM1 frame with front-frame clamp simplifies mounting, reducing installation time and panel downtime. With a 40 A rating, it supports precise distribution protection across mixed electrical systems for improved uptime and predictable performance.
Product Information
Extended Description
NZMN1-AF40-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, 40-40A, Front frame clamp, 40-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN1-AF40-NA
EAN
4015082742232
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
40-40A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front frame clamp
Overload range
40-40A
Number of poles
Three-pole
Trip rating
320-400 A
Feature: 40 A amperage rating within the NZMN1 frame delivers targeted protection for distribution circuits. Business impact: minimizes nuisance trips and overloads in panelboards, improving line uptime. Application: ideal for three-pole protection in manufacturing lines operating at up to 690 Vac. Feature: Front frame clamp mounting and compact NZM1 frame design. Business impact: simplifies installation and retrofits, reduces field wiring errors, and speeds panel upgrades. Application: particularly advantageous for machine control centers and factory automation racks. Feature: Thermal-magnetic trip with T268 characteristic and 50 kAIC short-circuit rating. Business impact: fast, predictable fault isolation, protecting motors and feeders and extending equipment life. Application: suited for distribution feeders in heavy electrical environments. Feature: 40-40A setting range and 690 Vac / 500 Vdc voltage ratings. Business impact: supports precise load management and safe interoperability with mixed AC/DC systems; reduces overprotection risk. Application: ideal for mixed voltage panels and energy management schemes. Feature: Rocker lever accessory, UL Listed certification, and Eaton warranty. Business impact: enhances usability, meets safety requirements, and lowers maintenance risk over the product life cycle. Application: service operations and maintenance contracts across industrial facilities.
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FAQs
Yes, NZMN1-AF40-NA is designed for the NZM1 frame and uses a front-frame clamp for straightforward mounting. This simplifies retrofit projects and panel upgrades, reducing on-site labor and wiring mistakes while maintaining secure electrical contact and compliance with installation standards.
The device provides a 40 A amperage rating, 690 Vac / 500 Vdc voltage ratings, a 50 kAIC short-circuit current rating, and a three-pole configuration. It uses a thermal-magnetic trip (T268) for precise fault isolation, making it suitable for demanding distribution circuits.
Yes. Its three-pole design, 40 A rating, high short-circuit capacity, and NZM1 frame compatibility make it well suited for motor control centers and distribution feeders in manufacturing and process industries, delivering reliable protection with fast fault clearance.
This breaker is UL Listed, ensuring compliance with safety standards in many regions. For CE, IP, or SIL ratings, verify regional requirements with Eaton or your distributor as part of a site-specific compliance assessment.
The product is covered by Eaton's warranty policy (one year from installation or 18 months from shipment, whichever occurs first). Regular inspection and torque checks of the front-frame clamp, along with standard preventative maintenance, help maintain protective performance and longevity.