Eaton NZMB2-A32-BT-NA Molded Case Breaker - 25 kAIC
Part Number: NZMB2-A32-BT-NA
Quick Summary
NZMB2-A32-BT-NA molded case circuit breaker from Eaton protects distribution circuits in industrial facilities. This compact unit helps simplify protection schemes and reduce panel footprint by combining fixed thermal with adjustable magnetic trip for precise coordination. With a 25 kAIC interrupt rating at 440 V and 32 A nominal current, it supports demanding feeder protection in MCCs and switchgear. Compliances are noted as provided by the manufacturer, so confirm exact certifications for your region; in practice, this family is often deployed under CE/UL-style registrations to support global installations. By choosing this model you gain reliable protection, ease of installation, and a scalable solution for evolving electrical protection needs.
Product Information
Extended Description
NZMB2-A32-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 600-1000A, Three-pole, 32A, 440 Vac, 25 kAIC, Box, Distribution circuit protect., 25-32A, Front frame clamp, 25-32A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-A32-BT-NA
EAN
4015081074228
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
4.1 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
32 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
25-32A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
25-32A
Number of poles
Three-pole
Trip rating
600-1000 A
Power Xpert Protection Manager x64
Eaton Specification Sheet - NZMB2-A32-BT-NA
Intelligent power starts with accurate, actionable data
Feature → Business Impact → Application: The NZMB2-A32-BT-NA employs a fixed thermal element with an adjustable magnetic trip (T185), delivering reliable overload and short-circuit protection that reduces nuisance trips while enabling selective coordination across feeder circuits in distribution panels. This translates to fewer unplanned outages and improved uptime in industrial environments, especially where motor loads are common and fault currents vary. Application-wise, it is well-suited for MCCs, switchgear housings, and compact control panels where precise protection of 32 A feeders at 440 Vac is required. The 25 kAIC interrupt capacity supports robust protection in moderate to high fault current scenarios, mitigating equipment damage and speeding fault isolation. Feature → Ease of installation → The NZM2 frame with front frame clamp terminals simplifies mounting and field wiring, while the box terminals provide secure, serviceable connections—reducing commissioning time and maintenance effort. Application: New installations and retrofit projects seeking reliable, easy-to-service protection devices.
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FAQs
This unit uses a front frame clamp connection with box terminals, designed for the NZM2 frame. It is a three-pole device suitable for distribution panels and MCCs, offering straightforward front-side wiring and secure terminal clamps that simplify field installation and future maintenance.
Key ratings include 32 A nominal current, 440 Vac voltage rating, and a 25 kAIC short-circuit breaking capacity. The trip type is T185 with a fixed thermal and adjustable magnetic release, and the device supports a 600-1000 A trip range, enabling selective protection in mid-to-high current circuits.
Yes. With three poles, 32 A nominal current, and 25 kAIC interrupt capacity, it is well-suited for motor feeders and distribution boards within MCCs. Its adjustable magnetic trip helps coordinate protection with downstream devices, while front frame clamp terminals facilitate quick installation in panel assemblies.
Compliances are listed as 'Contact Manufacturer' in the data, so verify the exact regulatory certifications for your region (for example CE/UL or others) with Eaton. This verification ensures the device meets local electrical codes and safety requirements for your application.
The warranty follows Eaton's policy: one year from installation or eighteen months from shipment, whichever comes first. For maintenance, rely on standard spare parts and field-replaceable components from Eaton, and plan for routine inspection of trip settings, wiring integrity, and enclosure cleanliness to maximize uptime.