Eaton NZMB2-AF25-NA NZM complete molded case circuit breaker
Part Number: NZMB2-AF25-NA
Quick Summary
NZM complete molded case circuit breaker protects industrial power distribution panels from overloads and short circuits. Engineers often battle nuisance trips and slow fault isolation, so dependable trip curves and precise adjustment are essential—this NZMB2-AF25-NA delivers fixed thermal with adjustable magnetic trip for reliable protection. Compliances and certification details are provided by the manufacturer, with warranty governed by Eaton’s policy; verify applicable certifications for your regional requirements. This model integrates smoothly with the NZM2 frame, offering front-screw connections and straightforward installation, supporting distribution circuit protection in modern panels and machine builds.
Product Information
Extended Description
NZMB2-AF25-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adjustable magnetic trip, Three-pole, 25A, 440 Vac, 25 kAIC, Distribution circuit protection, 25-25A, 350-350A delayed, Front screw, 25-25A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF25-NA
EAN
4015082691448
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
25 A
Voltage rating
440 Vac
Trip Type
T185
Circuit breaker type
NZMB2
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
350-350A delayed
Setting Range Ol Protector
25-25A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front screw
Overload range
25-25A
Number of poles
Three-pole
Feature: Three-pole NZMB2 frame, rated at 25 A and 440 Vac with a 25 kAIC interrupt rating. Business Impact: Provides robust protection for three-phase distributions, reducing damage from faults and minimizing unplanned downtime in industrial environments. Application: Suitable for panelboards and motor control centers requiring reliable protection in 440 Vac systems. Long-tail keywords integrated: NZM2 frame molded case circuit breaker, three-pole 25 A MCB, 25 kAIC interrupt rating, distribution circuit protection. Feature: Fixed thermal with adjustable magnetic trip (T185). Business Impact: Enables precise coordination to prevent nuisance trips while safeguarding equipment on startup and fault events. Application: Machine-level protection and distribution sections where motor loads demand selective protection. Long-tail keywords integrated: adjustable magnetic trip, T185 trip characteristic, coordinated protection, motor drive protection. Feature: Front screw connections. Business Impact: Simplifies wiring, reduces installation time, and improves serviceability in crowded panels. Application: Industrial control panels and switchgear assemblies with limited rear access. Long-tail keywords integrated: front screw connection, panel wiring efficiency, quick-install circuit breaker. Feature: Accessories including rocker lever and motor drive. Business Impact: Enhances operability for commissioning and remote operation, elevating control flexibility. Application: Systems requiring manual override or motor-driven control of the breaker. Long-tail keywords integrated: rocker lever accessory, motor drive option, equipment coordination. Feature: Short-circuit release and setting ranges (350-350A delayed; OL protector 25-25A). Business Impact: Improves fault-selectivity and overload protection, reducing unintended trips during surges and startup transients. Application: Power distribution units with load variability and occasional inrush, such as conveyors and presses. Long-tail keywords integrated: short-circuit release setting, delayed trip coordination, overload protection 25-25A. Feature: Front mounting, 25-25A overload range, three-pole configuration. Business Impact: Standardized installation across Eaton NZM2 family for scalable protection in multi-branch panels. Application: Industrial automation cabinets and control panels requiring consistent componentry. Long-tail keywords integrated: three-pole breaker, overload range 25-25A, panel scalability.
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FAQs
The device uses front screw connections for wiring. Verify 440 Vac rating and 25 A amperage, mount on a compatible NZM2 frame panel, and secure the three-pole arrangement with proper torque. Ensure proper clearances and follow local wiring codes for panel assembly.
Key specs include a 25 A continuous amperage rating, 440 Vac voltage rating, 25 kAIC short-circuit breaking/interrupt rating, and a T185 trip type with fixed thermal and adjustable magnetic release. It is a three-pole breaker in the NZMB2/NZM2 family.
Yes. It is designed for distribution circuit protection in three-pole configurations within the NZM2 frame, featuring front-screw termination for rapid wiring and compatibility with standard distribution panels and motor-control centers.
Compliance details are provided by the manufacturer. For regional certification needs, consult Eaton or your distributor to confirm CE, UL, or other applicable listings and ensure alignment with local electrical standards.
The unit comes with Eaton’s warranty policy and a robust protection profile (25 kAIC rating) that reduces downtime from faults. Routine maintenance is minimal beyond standard inspection of connections and verifying trip settings during periodic maintenance windows.