Eaton NZMB1-A25-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-A25-NA
Quick Summary
NZMB1-A25-NA molded case circuit breaker for distribution protection in industrial electrical panels. Engineers often struggle with reliable protection coordination, nuisance trips, and compatibility across panel enclosures. Typical certifications associated with this class of devices include CE and IEC standards, with UL certifications common in North America; verify exact status with Eaton. With a 25 A rating at 480 Vac and a 25 kAIC short-circuit capacity, this unit supports safe, scalable protection, while the NZM1 frame and front-frame clamp simplify installation and future upgrades for growing facilities.
Product Information
Extended Description
NZMB1-A25-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 350A trip rating, Three-pole, 25A, 480 Vac, 25 kAIC, Distribution circuit protection, Rocker lever, 20-25A, Front frame clamp, 20-25A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-A25-NA
EAN
4015082815608
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
2.45 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
25 A
Voltage rating
480 Vac
Trip Type
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
20-25A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
20-25A
Number of poles
Three-pole
Trip rating
350 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB1-A25-NA
NZMB1-A25-NA is designed as part of the NZM1 frame to standardize distribution protection across panel racks, enabling faster panel upgrades and improved spare parts planning. The thermal-magnetic trip type provides reliable overload protection and fast fault interruption, reducing equipment damage and downtime in demanding industrial environments. The three-pole configuration enables effective protection of three-phase loads, while the front frame clamp and rocker lever offer straightforward maintenance and quick replacement during routine service cycles. A setting range of 20-25 A supports precise coordination with downstream devices, minimizing nuisance trips and optimizing energy consumption. The 25 kAIC short-circuit breaking capacity delivers robust fault handling for moderate to high fault currents, improving system reliability. Compatibility with the NZM1 frame and the included rocker lever enhance installation ergonomics and reduce commissioning time, while the warranty and Eaton support ecosystem help mitigate procurement risk for maintenance teams.
Get a Quick Quote for a Eaton NZMB1-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 NZMB1-A25-NA?
Enquire Now
FAQs
NZMB1-A25-NA is designed for front-frame mounting on the NZM1 frame with a front frame clamp. For installation, ensure proper clearance for three-pole operation, confirm panel space for a 5.71 in height and 3.54 in width, and verify wiring to the front terminals. The rocker lever aids ergonomics during testing and commissioning, reducing handling time and risk.
This unit provides a 25 A amperage rating, 480 Vac voltage rating, and a short-circuit breaking/interrupt rating of 25 kAIC. It employs a thermal-magnetic trip type (T268) and supports a 20-25 A overload range with a three-pole configuration, suitable for distributed three-phase loads in industrial environments.
Yes. The NZMB1-A25-NA is built on the NZM1 frame and uses a front-frame clamp, aligning with standard Eaton distribution enclosures designed for NZM1 family breakers. This compatibility simplifies upgrades, stock management, and cross-compatibility across panels using the NZM1 form factor.
Compliance details for NZMB1-A25-NA are listed by the manufacturer. While CE/IEC and UL certifications are common for molded case breakers in industry practice, exact certification status should be confirmed with Eaton or the datasheet. Always verify the current compliance status before procurement for regulatory or customer-specific requirements.
The combination of a rocker lever, front-frame clamp, and a standardized NZM1 frame reduces maintenance time and downtime during inspections and replacements. The 25 kAIC fault current rating provides robust protection against severe faults, potentially lowering outage costs and extending equipment life, while a defined 20-25 A setting range supports precise coordination with downstream devices to optimize energy use and reduce nuisance trips.