Eaton NZMB1-AF25-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-AF25-NA
Quick Summary
NZMB1-AF25-NA molded case circuit breaker from Eaton is designed to protect distribution panels in industrial facilities. It delivers reliable overcurrent protection with a thermal-magnetic trip, reducing nuisance trips and unplanned outages in demanding electrical systems. Typical standards for protection devices include UL 489 and CE markings, though formal compliance details should be confirmed with the manufacturer. This three-pole unit uses the NZM1 frame and front-frame clamp for fast, secure mounting, while a rocker lever provides clear status indication. With a 25 A rating, 480 Vac operation, and a 25 kAIC interrupt capacity, it supports scalable distribution circuit protection and straightforward procurement decisions for engineering teams.
Product Information
Extended Description
NZMB1-AF25-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 350A trip rating, Three-pole, 25A, 480 Vac, 25 kAIC, Distribution circuit protection, Rocker lever, 25-25A, Front frame clamp, 25-25A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-AF25-NA
EAN
4015082815554
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
Amperage Rating
25 A
Voltage rating
480 Vac
Trip Type
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
25-25A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
25-25A
Number of poles
Three-pole
Trip rating
350 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB1-AF25-NA
Thermal-magnetic trip (T268) delivers selective overcurrent protection, reducing nuisance trips and extending equipment life in demanding environments. In a typical distribution panel, this translates to fewer unplanned outages and easier maintenance planning. The 25 A, 480 Vac rating supports efficient feeder protection for moderate-load circuits and motor starters, optimizing protection coordination with downstream devices and simplifying panel design for industrial lines. The NZM1 frame with a front-frame clamp enables fast, secure installation, reducing field wiring errors and shortening commissioning times in both new builds and retrofit projects. The rocker lever provides intuitive operation and clear trip indication, improving operator safety and serviceability during routine checks. A short-circuit breaking capacity of 25 kAIC ensures rapid interruption of high fault currents, protecting personnel and downstream equipment in demanding facilities. A setting range of 25-25 A allows precise coordination with feeders and downstream protection zones, enabling consistent protection across the installation.
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FAQs
NZMB1-AF25-NA is designed for three-pole protection on the NZM1 frame with a front-frame clamp. It accommodates standard distribution cabinet mounting and delivers secure seating within panels. Installers should verify conductor sizes, tightening torque per Eaton guidelines, and ensure correct seating in the front-frame cutout to prevent misalignment or vibration during operation.
The breaker employs a thermal-magnetic trip (T268) with a 25 A nominal rating and a voltage rating of 480 Vac. It provides a short-circuit breaking capacity of 25 kAIC, enabling safe interruption of high fault currents in three-phase circuits and supporting reliable protection coordination in feeders and downstream devices.
Yes. The three-pole design on the NZM1 frame, 480 Vac rating, and 25 A protection make it well suited for machine control panels and feeder protection in manufacturing and processing environments. Its front-frame mounting and rocker lever improve installation speed and operator visibility, while the 25 kAIC rating supports robust fault handling in active lines.
Compliance details are to be confirmed with the manufacturer; the product lines for molded-case breakers commonly reference standards such as UL 489 and CE labeling, depending on region. For exact certifications on NZMB1-AF25-NA, request the latest Eaton documentation or a formal compliance statement from Eaton to ensure regulatory alignment for your project.
Eaton’s warranty for this product follows policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, follow Eaton guidance on inspection intervals, verify rocker lever operation, and ensure front-frame connection integrity. Replace components if tripping becomes inconsistent or if mounting stability is compromised to maintain reliable protection.