Eaton NZMN2-AF40-NA NZM2 MCCB - UL Listed, 50 kAIC
Part Number: NZMN2-AF40-NA
Quick Summary
The Eaton NZMN2-AF40-NA is a molded case circuit breaker for distribution panel protection in industrial electrical systems. Engineers often face space constraints, difficult wiring access, and the challenge of protecting critical load paths without overcomplicating panel layouts. UL Listed certification underpins safety compliance, while the device is designed around the NZM2 frame with a thermal-magnetic trip for reliable protection at 40 A. This solution also supports front-screw installation and a compact footprint, helping you optimize panel density. By combining a robust short-circuit rating with straightforward maintenance, it delivers predictable protection and faster commissioning for industrial applications.
Product Information
Extended Description
NZMN2-AF40-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMN2, Thermal-magnetic trip, Three-pole, 40A, 690 Vac, 750 Vdc, 50 kAIC, Distribution circuit protection, 40-40A, 320-400A delayed, Front screw, 40-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN2-AF40-NA
EAN
4015082691752
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
T268
Circuit breaker type
NZMN2
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
320-400A delayed
Setting Range Ol Protector
40-40A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front screw
Overload range
40-40A
Number of poles
Three-pole
Feature → Business Impact → Application: The NZMN2-AF40-NA uses a thermal-magnetic trip (T268) for precise overload and short-circuit protection, reducing nuisance trips and expanding mean time between failures in continuous-running machinery. This translates to lower maintenance costs and improved uptime in manufacturing lines and process controls, while ensuring compliance with industry protection standards in 690 Vac / 750 Vdc systems. The 40 A setting with a 50 kAIC breaking capacity supports reliable protection in distribution panels without oversizing, enabling cost-effective panel design for control cabinets and motor circuits. The front screw connection simplifies field wiring and reduces installation time, improving project labor efficiency and reducing commissioning risk. Compatible with the NZM2 frame and three-pole configuration, it integrates smoothly with motor drives and distribution protection schemes in industrial automation.
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FAQs
Yes. The NZMN2-AF40-NA is designed around the NZM2 frame and uses front screw terminals, enabling straightforward retrofit into existing panel assemblies and simplifying field wiring during installation.
It provides a 40 A current rating with a thermal-magnetic trip (T268) and a short-circuit breaking capacity of 50 kAIC. Voltage ratings are 690 Vac and 750 Vdc, making it suitable for standard distribution protection in industrial environments.
Ideal for distribution circuit protection in industrial control panels, motor control centers, and panels requiring compact, reliable 3-pole protection with easy maintenance and fast commissioning.
The device is UL Listed, supporting safety compliance in the United States. For additional certifications such as CE or other regional marks, consult Eaton to confirm applicability and any required documentation.
With a robust thermal-magnetic trip and front-access wiring, maintenance visits are streamlined, reducing downtime. The 40 A setting paired with 50 kAIC ratings helps prevent costly outages, delivering cost savings through improved reliability and faster panel commissioning.