Eaton NZMB1-A32-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-A32-NA
Quick Summary
Molded Case Circuit Breaker from Eaton protects distribution circuits in industrial panels. This device interrupts fault currents quickly to minimize downtime and equipment damage, addressing a common maintenance challenge for engineers. When selecting protection devices, verify certifications such as CE and UL marks and IP ratings with the manufacturer to ensure regulatory compliance. The NZMB1-A32-NA offers a 32 A rating at 480 Vac with 25 kAIC short-circuit capacity and a three-pole NZM1 frame for scalable protection in compact installations. Its front-frame clamp and rocker lever simplify installation and servicing, delivering reliable performance and a lower total cost of ownership over the system lifecycle.
Product Information
Extended Description
NZMB1-A32-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 350A trip rating, Three-pole, 32A, 480 Vac, 25 kAIC, Distribution circuit protection, Rocker lever, 25-32A, Front frame clamp, 25-32A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-A32-NA
EAN
4015082815615
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
1.73 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
480 Vac
Trip Type
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
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
350 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB1-A32-NA
Feature: 32 A rating at 480 Vac with 25 kAIC short-circuit capacity. Benefit: Provides robust protection for motor loads and distribution circuits while accommodating high fault current events; Application: suitable for industrial control panels needing reliable protection without oversizing components. Feature: 3-pole NZMB1 with NZM1 frame. Benefit: Enables compact, standardized protection across multi-phase systems; Application: ideal for panel banks and machine control centers. Feature: Setting range 25-32 A. Benefit: Allows fine-tuning for load profiles and selective tripping; Application: improves reliability in variable-load equipment. Feature: T268 trip type. Benefit: Delivers fast, predictable fault interruption to minimize damage; Application: critical for sensitive automation loads. Feature: Front-frame clamp and rocker lever. Benefit: Simplifies mounting and field servicing, reducing commissioning time; Application: accelerates installation in retrofit projects. Feature: 350 A trip rating. Benefit: Supports higher protection thresholds for distributed circuits; Application: aligns with moderate-to-large distribution schemes. Warranty: One year from installation or eighteen months from shipment (whichever occurs first). Benefit: Reduces lifecycle risk and provides procurement confidence; Application: essential in multi-site deployments and service contracts.
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FAQs
To install the NZMB1-A32-NA, mount the unit using the front-frame clamp for secure, tool-free mounting. Ensure phase alignment for a three-pole configuration and connect conductors to the front-frame terminals. The rocker lever facilitates commissioning checks, while the 25-32 A setting range lets you tailor protection to the load profile. Verify panel clearance and cooling per enclosure guidelines.
Key ratings include 32 A continuous amperage, 480 Vac operating voltage, and 25 kAIC short-circuit breaking capacity. The device is a three-pole breaker with an NZMB1 type and NZM1 frame, featuring a 25-32 A setting range, 350 A trip rating, and a T268 trip characteristic for fast, selective protection in distribution circuits.
Yes. With three poles, 32 A rating, 480 Vac, and 25 kAIC capacity, the NZMB1-A32-NA is designed for distribution protection in industrial environments. Its compact NZM1 frame and front-frame mounting support streamlined panel design, while the rocker lever and adjustable setting range improve reliability during routine operation and maintenance.
Compliances are listed as Manufacturer to be confirmed. In practice, customers typically verify CE, UL, and IP-related requirements with Eaton or their local distributor to ensure regulatory alignment for any given installation. Always request the latest certificate pack from Eaton for your project documentation and auditing needs.
The product carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, rely on the rocker lever for ease of operability and the front-frame clamp for quick replacement or swapping in field service. Plan lifecycle reviews around the 25-32 A setting range and 350 A trip rating to optimize uptime.