Eaton NZMB2-AF15-BT-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB2-AF15-BT-NA
Quick Summary
Eaton NZMB2-AF15-BT-NA molded case circuit breaker provides reliable overcurrent protection for distribution panels and industrial equipment. In practice, engineers struggle with nuisance trips and drift in protective settings during startup or process upsets, which can cause unplanned downtime. This unit features fixed thermal protection with an adjustable magnetic trip, delivering stable, repeatable protection for demanding loads. While compliance requirements vary by region, many Eaton NZM devices align with common industry expectations for short-circuit performance up to 25 kAIC at 440 Vac. Its compact NZM2 frame and front frame clamp simplify installation, while available rocker lever and motor-drive accessories support scalable protection across evolving electrical systems. This combination adds reliability and reduces lifecycle costs for panel builders and end users.
Product Information
Extended Description
NZMB2-AF15-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 800-1300A, Three-pole, 15A, 440 Vac, 25 kAIC, Box, Distribution circuit protect., 15-15A, Front frame clamp, 15-15A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF15-BT-NA
EAN
4015081072576
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
5 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
15 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
15-15A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
15-15A
Number of poles
Three-pole
Trip rating
800-1300 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB2-AF15-BT-NA
Feature → Business Impact → Application: The NZMB2-AF15-BT-NA uses a fixed thermal trip with an adjustable magnetic trip, delivering precise overload protection and fast short-circuit response; this reduces nuisance trips and protects connected equipment, improving uptime in distribution panels and machine assemblies. Feature → Business Impact → Application: NZM2 frame with three-pole configuration and a 15 A rating at 440 Vac provides compact, high-current protection for motor feeders and critical loads, enabling denser cabinet layouts and easier panel design. Feature → Business Impact → Application: 25 kAIC short-circuit breaking capacity ensures protection during severe fault events, supporting safety compliance and minimizing equipment damage in peak-demand environments. Feature → Business Impact → Application: Front frame clamp terminals and box connections simplify wiring and retrofit installations, reducing installation time and error-prone wiring in new builds and upgrades. Feature → Business Impact → Application: Accessories like rocker lever and motor-drive options extend functionality for process automation and machinery control, enabling smoother integration with drive systems and remote diagnostics. The product’s robust warranty and Eaton support ecosystem further reduce total cost of ownership by simplifying maintenance planning and spare parts lifecycle.
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FAQs
This breaker uses front frame clamp terminals and a three-pole enclosure, designed for NZM2 frames. Verify panel compatibility with 440 Vac ratings, 15 A nominal current, and the device’s mounting footprint. Ensure downstream wiring follows the front-entry configuration to minimize wiring length and improve fault isolation during maintenance.
Key specs include 15 A nominal current, 440 Vac voltage rating, 25 kAIC short-circuit breaking capacity, and a fixed thermal with adjustable magnetic trip (Trip Type T185). It is a three-pole NZMB2 unit within the NZM2 frame, with box terminals and a 800-1300 A trip rating range depending on configuration.
The device supports motor-drive applications via compatible accessories such as a rocker lever and motor-drive options. While it provides strong overcurrent protection, confirm the specific motor inrush profile and coordinating protection with drive controllers to ensure proper coordination and avoid nuisance trips during startup.
Compliances are noted as ‘Contact Manufacturer’ for regional certification specifics. Verify with Eaton for CE, UL, or regional conformity based on your installation location and applicable electrical standards before procurement or installation.
Warranty is Eaton Selling Policy 25-000, offering one year from the date of installation or eighteen months from shipment, whichever occurs first. This provides a clear basis for service planning and spare parts support during the initial lifecycle of the equipment.