Eaton NZMB2-A160-BT-NA NZM Breaker MCCB - 25 kAIC
Part Number: NZMB2-A160-BT-NA
Quick Summary
NZMB2-A160-BT-NA molded case circuit breaker protects electrical distributions in industrial equipment. Engineers often struggle to balance selective protection with nuisance trips in compact switchgear. Formal CE/UL certifications should be confirmed with the manufacturer, while the unit supports 440 Vac operation and a 25 kAIC interrupt capacity. The NZMB2-A160-BT-NA combines robust protection with straightforward installation, enabling safer, more reliable panel boards. With its fixed thermal, adjustable magnetic trip and three-pole design, it supports coordinated protection across motor, lighting, and process circuits. This translates to improved uptime and reduced maintenance costs, while keeping installation simple in the field. Secondary benefits include compact footprint and compatibility with standard Eaton accessories and mounting practices.
Product Information
Extended Description
NZMB2-A160-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 960-1600A delayed, Three-pole, 160A, 440 Vac, 25 kAIC, Box, Distribution circuit protection, 125-160A, Front frame clamp, 125-160A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-A160-BT-NA
EAN
4015081074297
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
160 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
125-160A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
125-160A
Number of poles
Three-pole
Trip rating
960-1600 A delayed
Feature: 160 A amperage rating and 440 Vac voltage rating. Business impact: Protects distribution circuits up to 160 A while withstanding typical industrial power quality variations, reducing the risk of nuisance trips and equipment damage. Application: Suitable for panel boards and distribution panels across manufacturing lines. Feature: 25 kAIC short-circuit breaking capacity. Business impact: Delivers high fault current withstand, enabling safer isolation and faster fault clearing in heavy-duty environments. Application: Industrial motor feeds and critical process lines where high fault currents can occur. Feature: NZM2 frame with three-pole design. Business impact: Simplifies integration into standard 3-phase systems, improving space efficiency and installation time. Application: Motor control centers, switchgear, and distribution cabinets. Feature: Fixed thermal with adjustable magnetic trip (T185) and 125-160A setting range. Business impact: Enables precise protection coordination and scalable protection for evolving loads, reducing unplanned outages. Application: Process lines and equipment with varying inrush profiles. Feature: Front frame clamp terminals and box connections. Business impact: Simplifies mounting, testing, and replacement, lowering maintenance time and labor costs. Application: Retrofit projects and new installations in compact enclosures. Feature: Accessories including rocker lever and motor drive options. Business impact: Enhances operability and control flexibility, supporting remote or manual operation without sacrificing safety. Application: Control panels and motor-driven applications. Industry context: By combining a compact footprint, rugged protection ratings, and Eaton’s engineering mindset, this MCCB aligns with reliability targets, compliance expectations, and total cost of ownership goals for medium-duty distribution systems.
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FAQs
The unit uses front frame clamp terminals and a box connection design, enabling straightforward mounting in standard distribution panels and easy replacement in retrofit projects.
It is a three-pole device with 160 A amperage rating, 440 Vac, and a 25 kAIC short-circuit capacity. Trip type is fixed thermal with adjustable magnetic (T185), and its setting range is 125–160 A.
Yes. With motor drive compatibility and a three-pole NZM2 frame, it supports motor protection schemes in control panels and motor control centers, while allowing precise coordination with upstream protection.
The data indicates compliance is listed as 'Contact Manufacturer' for formal certifications. Verify CE/UL or other regulatory certifications with Eaton for your specific regional requirements.
The front frame clamp terminals and compact 8.5 x 5.75 x 3.75 in footprint enable quick installation and easier replacement, while the optional rocker lever and motor drive accessories streamline operation and service.