Eaton NZMB2-AF150-BT-NA NZM2 MCCB - 25 kAIC rating
Part Number: NZMB2-AF150-BT-NA
Quick Summary
NZMB2-AF150-BT-NA is a molded case circuit breaker that protects distribution panels in industrial facilities. It addresses nuisance trips and complex wiring that hamper uptime and safety in demanding environments. Certification status for this record indicates Compliances: Contact Manufacturer, so confirm CE/UL or other marks with Eaton; the device delivers a robust 25 kAIC short-circuit rating at 440 Vac in a three-pole configuration. This combination supports reliable distribution protection while aligning with project requirements for industrial automation, panel boards, and motor-control centers. By leveraging the NZM2 frame and available accessories such as rocker lever or motor drive, this breaker offers installation efficiency and scalable, compliant protection for growing electrical systems.
Product Information
Extended Description
NZMB2-AF150-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 960-1600A delayed, Three-pole, 150A, 440 Vac, 25 kAIC, Box, Distribution circuit protection, 150-150A, Front frame clamp, 150-150A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF150-BT-NA
EAN
4015081072927
Product Length/Depth
8.5 in
Product Height
5.75 in
Product Width
3.75 in
Product Weight
5.46 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
150 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
Setting Range Ol Protector
150-150A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
150-150A
Number of poles
Three-pole
Trip rating
960-1600 A delayed
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB2-AF150-BT-NA
Feature: NZMB2-AF150-BT-NA uses the NZM2 frame and a three-pole construction to deliver compact, high-current protection for distribution networks. Business Impact: Reduces footprint in control panels while maintaining reliable fault isolation with a 25 kAIC short-circuit rating. Application: Suitable for industrial automation panels and motor control centers where space is at a premium. Feature: Fixed thermal with adjustable magnetic trip (T185) provides tailored protection curves. Business Impact: Minimizes nuisance trips and improves selectivity during startup surges, enhancing uptime and safety in demanding environments. Application: Light-to-moderate motor loads and distribution feeders that require precise overload protection and rapid fault clearance. Feature: Front frame clamp terminals enable fast, secure wiring. Business Impact: Speeds up installation and reduces commissioning errors, cutting installation time in panel shop or on-site. Application: New installs and retrofit projects where clean, accessible terminations are essential. Feature: Accessories include rocker lever and motor drive. Business Impact: Simplifies operation and integration with existing control schemes, lowering maintenance costs. Application: OEM panels and retrofit projects needing intuitive operation and easy remote-drive compatibility. Feature: 150 A amperage rating and 440 Vac operation. Business Impact: Aligns with common industrial power systems, enabling predictable protection for machinery and panel feeders. Application: Distribution circuits in manufacturing facilities and process lines. Feature: Short-circuit breaking capacity 25 kAIC and trip rating 960-1600 A delayed. Business Impact: Ensures robust fault clearance for high-inertia loads, reducing arc exposure and downtime. Application: Heavy-duty machines and conveyors where fault currents can exceed standard ratings. Feature: Box terminals and front-frame mounting. Business Impact: Simplifies panel layout planning and accessibility for service crews. Application: Panelboard installations with front-access wiring requirements. Feature: Compliance reference and warranty as per Eaton policy. Business Impact: Provides assurance of service terms and reliability for procurement budgets. Application: Project planning, procurement, and long-term maintenance planning in industrial facilities.
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FAQs
Install using the front frame clamp terminals for secure wiring and simplify panel mounting. The three-pole design fits standard distribution panels, and the NZM2 frame enables compact integration with other protective devices.
It is rated for 150 A at 440 Vac, with a short-circuit breaking capacity of 25 kAIC and a trip type rated as T185. The unit features fixed thermal protection with adjustable magnetic trip to suit different load profiles.
Yes. The three-pole configuration, high break capacity, and compatibility with motor-drive accessories support motor control center panels and distribution feeders in automation environments.
Current data shows Compliances: Contact Manufacturer. Verify CE, UL, or other regulatory marks with Eaton for your region and ensure alignment with local electrical codes.
The robust 25 kAIC protection reduces downtime from fault events, while front-frame accessibility and available rocker lever/motor-drive accessories lower commissioning and maintenance effort, delivering measurable uptime and maintenance cost savings.