Eaton NZMB2-AF175-BT-NA NZM MCCB - 25 kAIC OL Prot
Part Number: NZMB2-AF175-BT-NA
Quick Summary
Eaton NZMB2-AF175-BT-NA molded case circuit breaker protects critical power distribution in industrial panels. Selecting the right frame, trip curve, and current setting for demanding environments can delay projects and increase downtime. Certification status varies by region, but Eaton provides region-specific approvals and supports standard industry practices for global deployments. This 175 A, 440 Vac device delivers reliable overload and short-circuit protection with a 25 kAIC interrupt capacity and a front-frame clamp for quick installation. Designed for distribution applications and motor control centers, it integrates with NZM2 frames and offers flexible options to optimize uptime and panel design while reducing lifecycle costs.
Product Information
Extended Description
NZMB2-AF175-BT-NA Eaton: MCCB NZM, NZM2 TM and Elec. Breakers, Circuit Breaker, 175-175A OL Prot. Rng, Frame clamp, front, Three-pole, 175A Perm. Current, 25 kA, 175-175A Set. Rng OL Prot., 1200-2000A Undelayed Adj. Rng., Rocker lever, motor drive optional
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF175-BT-NA
EAN
4015081072934
Product Length/Depth
5.51 in
Product Height
5.86 in
Product Width
5.86 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.
Certifications
Contact Manufacturer
Amperage Rating
175 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
1200-2000A delayed
Setting Range Ol Protector
175-175A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
175-175A
Number of poles
Three-pole
Trip rating
1000-1750 A
Feature → Business Impact → Application: The NZMB2-AF175-BT-NA delivers 175 A rated protection at 440 Vac with a 25 kAIC interrupt capacity, enabling precise fault isolation and enhanced safety for distribution panels and MCCs. This translates to reduced arc flash risk and minimized downtime, especially in high-current feed sections and motor drives. Application: Ideal for industrial distribution panels and automated systems where reliable protection and fast fault clearance are essential. Feature → Business Impact → Application: Three-pole construction in the NZM2 frame ensures compact, consistent mounting with front-frame clamp terminals for secure wiring and repeatable assemblies. This reduces installation time and simplifies field service, supporting scalable panel design. Application: Suitable for switchgear assemblies and control panels requiring robust, accessible protection. Feature → Business Impact → Application: Adjustable short-circuit release range (1200–2000 A delayed) plus a fixed OL range (175–175 A) provides tailored protection against high-energy faults while preventing nuisance trips. Application: Critical in systems with surge currents or motor startup transients. Feature → Business Impact → Application: Optional rocker lever and motor drive integration support automation and drive control, improving operator interaction and enabling seamless control in modern production lines. Application: Motor control centers and automated panels where manual control and remote drive options are beneficial. Feature → Business Impact → Application: Front frame clamp connection and NZM2 frame compatibility simplify installation across Eaton’s MCCB family, reducing spare parts inventory and enabling standardized sourcing. Application: Panel builders seeking consistent protection solutions across multiple systems. Feature → Business Impact → Application: Warranty and support policy (one year from installation or eighteen months from shipment) provides predictable risk management and service planning. Application: Industrial facilities prioritizing uptime and post-sale support. The result is a robust, scalable protection device that aligns with typical industry standards while offering flexibility for automation and drive integration.
Get a Quick Quote for a Eaton NZMB2-AF175-BT-NA
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton NZMB2-AF175-BT-NA?
Enquire Now
FAQs
Installers should mount the NZMB2-AF175-BT-NA in an NZM2-frame compartment using the front-frame clamp terminals for secure wiring. The device measures 5.51 in deep with 5.86 in height and width, and weighs about 5.17 lb, facilitating straightforward handling within standard panel layouts. Use the 175 A rating and 440 Vac connection to align with your feeder protections and ensure proper clearance for wiring and motor drive connections.
Key specs include 175 A amperage rating, 440 Vac voltage rating, and 25 kAIC short-circuit breaking/interrupt capacity. It is a three-pole NZMB2-type breaker with T185 trip characteristic, front-frame clamp terminals, and an OL protection range of 175–175 A. The short-circuit release can be adjusted from 1200–2000 A (delayed), allowing tailored fault response for your system.
Yes. The NZMB2-AF175-BT-NA is designed for distribution panels and MCCs, with optional motor drive support and a rocker lever for easier control. Its NZM2 frame and compatible front-frame clamp offer reliable mechanical and electrical mounting, while the 25 kAIC rating provides robust protection for motor startups and fault conditions common in MCC environments.
Certification status varies by region. Eaton provides guidance on CE, UL, IEC, and other regional approvals; however, exact approvals should be confirmed with Eaton for your installation location. The product’s protection class and compliance are supported through Eaton’s certification program, with regional documentation available upon request.
The 25 kAIC interrupt rating and 440 Vac protection minimize fault duration and arc exposure, reducing downtime and maintenance costs. The compact NZM2 frame with front-frame clamp simplifies installation and future upgrades, lowering field labor and spare parts needs. Warranty guidance (one year from installation or 18 months from shipment) helps with maintenance planning and total cost of ownership.