Eaton NZMB2-A25-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB2-A25-NA
Quick Summary
The Eaton NZMB2-A25-NA Molded Case Circuit Breaker protects distribution circuits in industrial control panels. Engineers often contend with nuisance trips and insufficient protection for motor loads, making reliable trip control essential. The device uses an adjustable magnetic trip with a fixed thermal element, offering precise coordination and fast response. Design and testing for this series typically align with industry practices around a 25 kAIC interrupt rating and 440 Vac operation. In practice, this model supports front-screw installation, a compact NZM2 frame, and robust distribution protection to help minimize downtime and maintenance costs. Three-pole construction and a 25 A current rating ensure scalable protection for panel boards in automation facilities. Optional accessories such as rocker lever and motor-drive kits simplify field upgrades.
Product Information
Extended Description
NZMB2-A25-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adjustable magnetic trip, 480-800A trip rating, Three-pole, 25A, 440 Vac, 25 kAIC, Box, Distribution circuit protection, 20-25A, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-A25-NA
EAN
4015082692070
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
5.17 lb
Compliances
Contact Manufacturer
Amperage Rating
25 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
20-25A
Interrupt rating
25 kAIC
Connection
Front screw
Number of poles
Three-pole
Trip rating
480-800 A
The NZMB2-A25-NA leverages the NZM2 frame to deliver a compact, standardized footprint for distribution circuit protection. This enables panel manufacturers to stock a common platform across multiple ratings, reducing spare parts and installation complexity. In practice, engineers can simplify cabinet layouts in machine rooms where space is at a premium. The unit combines fixed thermal with an adjustable magnetic trip (T185), enabling precise coordination for motor drives and critical loads. This reduces nuisance trips while maintaining selective protection during startup surges. For panel builders, the setting range of 20-25 A supports near-match protection without overfusing downstream devices. With a 25 kAIC interrupt rating and 440 Vac operating voltage, the NZMB2-A25-NA provides robust fault clearance and safe service intervals. Front-screw terminals simplify wiring, testing, and field maintenance, while a box terminal design accommodates straightforward installation in standard enclosures. Optional accessories, including a rocker lever and motor-drive kit, extend the product's utility for retrofit projects and automated lines. From a compliance and support perspective, verify the exact standards with Eaton for specific markets, while the datasheet confirms electrical characteristics and installation notes. Rely on Eaton's specification sheet for recommended wiring schemes, coordination with upstream protection, and lifecycle support.
Get a Quick Quote for a Eaton NZMB2-A25-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-A25-NA?
Enquire Now
FAQs
Yes. The NZMB2-A25-NA is a three-pole device designed for front-screw wiring in standard distribution panels. Its NZM2 frame provides a compact footprint compatible with common panel layouts, simplifying retrofits and new installations. Verify enclosure clearance and torque specs per the Eaton datasheet during wiring and assembly.
The breaker features fixed thermal protection combined with an adjustable magnetic trip (T185). The setting range is 20–25 A, enabling selective protection for motor drives and critical loads. This arrangement minimizes nuisance trips during startup while ensuring rapid response to short circuits, improving machine uptime.
Absolutely. With a 25 A rating, 440 Vac capability, and a 25 kAIC interrupt rating, the NZMB2-A25-NA is well-suited for distribution circuits in automation cabinets. Its front-access installation and compatibility with rocker lever and motor-drive accessories support modernization efforts and scalable protection in machine control environments.
Compliances for this model are listed as requiring confirmation with the manufacturer. In practice, components of this class typically align with regional electrical standards and industry best practices. Always verify CE/IEC compatibility and any site-specific regulatory requirements with Eaton prior to deployment.
The device’s robust interrupt rating, durable NZM2 frame, and available accessories (rocker lever, motor drive) support easy retrofits and downtime reduction. Field service is streamlined by front-screw wiring and standardized dimensions, enabling quicker maintenance cycles, better spare parts planning, and improved mean time between failures in automation lines.