Eaton NZMB2-A125-BT-NA NZM MCCB - 3-Pole, 25 kAIC
Part Number: NZMB2-A125-BT-NA
Quick Summary
Eaton NZMB2-A125-BT-NA molded case circuit breaker protects industrial distribution panels and equipment. In busy plants, startups and fault events demand compact, reliable protection with easy integration. Compliance and certification vary by market; confirm current CE, UL, or IP ratings with the manufacturer for your region. This three-pole NZMB2 model delivers 125 A, 440 Vac protection with a 25 kAIC short-circuit rating in the NZM2 frame, featuring fixed thermal and adjustable magnetic trip, plus front-frame clamp terminals for fast installation. With optional rocker lever or motor drive accessories, it simplifies upgrades and reduces wiring complexity while supporting safer, code-compliant power distribution across panels and machines.
Product Information
Extended Description
NZMB2-A125-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 750-1250A delayed, Three-pole, 125A, 440 Vac, 25 kAIC, Box, Distribution circuit protection, 100-125A, Front frame clamp, 100-125A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-A125-BT-NA
EAN
4015081074280
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
125 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
100-125A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
100-125A
Number of poles
Three-pole
Trip rating
750-1250 A delayed
Feature: 125 A amperage rating and 440 Vac voltage rating ensure targeted protection for common industrial loads. Business Impact: Prevents overloads and nuisance trips while safely accommodating standard panel voltages. Application: Ideal for distribution panels and machine control circuits in manufacturing and processing environments. Feature: 25 kAIC short-circuit capacity and T185 trip characteristics provide rapid fault clearance. Business Impact: Minimizes arc fault risk and equipment damage, supporting higher uptime. Application: Critical for motor feeds and large control circuits in harsh industrial settings. Feature: NZM2 frame with three-pole design and front-frame clamp terminals offers compact, robust mounting. Business Impact: Simplifies installation, reduces panel depth, and improves wiring safety. Application: Suitable for panel enclosures with box-terminals and modular protection schemes. Feature: Setting range 100-125 A offers adjustable protection as loads evolve. Business Impact: Enables on-site tuning to optimize protection without replacing components. Application: Scalable protection for evolving distribution networks in plants. Feature: Accessories including rocker lever and motor drive enhance installation flexibility. Business Impact: Streamlines retrofits and reduces maintenance downtime. Application: Retrofit projects and motor-driven equipment upgrades in existing lines. Feature: 8.5 in x 5.75 in x 3.75 in footprint and 5.46 lb weight support installation in compact spaces. Business Impact: Frees valuable enclosure space and lowers shipping/handling costs. Application: Enclosures with limited depth and weight constraints across manufacturing floors.
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FAQs
Yes. The NZMB2-A125-BT-NA is designed for the NZM2 frame, utilizes a front-frame clamp connection, and features three poles with box terminals. This design supports straightforward mechanical mounting and clean wiring in standard distribution panels and motor control applications.
Key specs include a 125 A amperage rating, 440 Vac voltage rating, and a 25 kAIC short-circuit breaking capacity with a T185 trip type. The device also offers a 100-125 A adjustable setting range, three poles, and box terminals for reliable distribution protection.
This breaker excels in distribution panels, motor control centers, and switchgear applications in manufacturing and processing environments. Its NZM2 frame, robust 25 kAIC rating, and front-frame mounting make it suitable for compact panel designs and scalable protection schemes.
The front-frame clamp terminals, compact footprint, and three-pole design simplify installation and wiring within enclosures. Optional accessories like rocker levers and motor drives further streamline retrofits and maintenance, reducing downtime and enabling quicker upgrades.
Warranty follows Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first. For after-sales support, confirm current certifications and availability of spare parts with Eaton, especially for field service and retrofits in regulated environments.