Eaton NZMB2-AF25-BT-NA NZM2 Molded Case Breaker - 25 kAIC
Part Number: NZMB2-AF25-BT-NA
Quick Summary
NZMB2-AF25-BT-NA is a compact molded case circuit breaker used to protect electrical distributions in industrial and commercial panels. Engineers often contend nuisance trips or unexpected outages; this unit combines fixed thermal protection with adjustable magnetic trip to improve selectivity and uptime. Compliances: Contact Manufacturer — verify CE, UL and IEC conformance through Eaton documentation. For procurement and maintenance teams, the NZMB2-AF25-BT-NA aligns with distribution circuit protection strategies and supports future scalability within the NZM2 frame and front-frame mounting ecosystem.
Product Information
Extended Description
NZMB2-AF25-BT-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, Box, Distribution circuit protection, 25-25A, 350-350A delayed, Front frame clamp, 25-25A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF25-BT-NA
EAN
4015081072590
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
Terminals
Box
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 frame clamp
Overload range
25-25A
Number of poles
Three-pole
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB2-AF25-BT-NA
Feature: Fixed thermal with adjustable magnetic trip (T185) provides reliable protection against overloads and short circuits. Business Impact: Reduces nuisance tripping while preserving equipment uptime, enabling safer operation in demanding industrial environments. Application: Suitable for distribution panels and control centers that require precise coordination of overcurrent protection in 25 A circuits. Feature: Three-pole NZMB2 within the NZM2 frame rated for 440 Vac, 25 kAIC interrupt capacity. Business Impact: Delivers high fault current handling with selective protection for multi-phase loads, improving system reliability and safeguarding downstream equipment. Application: Main distribution boards and motor-driven systems requiring robust interrupt performance. Feature: Front frame clamp terminals (Box) for straightforward wiring and serviceability. Business Impact: Facilitates faster installation and easier maintenance, reducing field labor time and potential wiring errors. Application: New installs and retrofit projects where front-access wiring accelerates commissioning. Feature: Accessories including rocker lever and motor drive option. Business Impact: Expands control options and retrofit flexibility without changing hardware, lowering lifecycle cost. Application: Panels with motorized control or remote signaling requirements. Feature: NZMB2-AF25-BT-NA warranty and Eaton support framework. Business Impact: Provides risk reduction for asset-intensive facilities with documented service terms. Application: Enterprise-level maintenance planning and OEM-grade protection for critical processes.
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FAQs
NZMB2-AF25-BT-NA uses a front frame clamp and box terminals designed for NZM2-frame distribution panels. Ensure mounting accommodates a three-pole breaker, correct busbar spacing, and proper torque on terminals to maintain termination integrity during panel commissioning.
The device is rated for 25 A, 440 Vac with a short-circuit rating of 25 kAIC and a trip type of T185. It is a three-pole NZMB2 inside an NZM2 frame, with a fixed thermal and adjustable magnetic trip to balance protection with system availability.
Yes. The 25 A rating and adjustable magnetic trip support motor start-up and run protection in controlled loads. The availability of motor drive accessories and a rocker lever option enhances control flexibility for motor circuits in panel boards and MCCs.
Compliances are provided by the manufacturer. Verify CE, UL, and IEC conformance through Eaton’s documentation and product datasheets to ensure alignment with regional electrical codes and customer requirements.
Warranty terms follow Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first. Routine checks on terminations and mechanical operation, plus annual or periodic test intervals, help sustain reliable protection over the asset lifecycle.