Eaton NZMB2-A80-NA NZM complete MCCB - 25 kAIC
Part Number: NZMB2-A80-NA
Quick Summary
NZM complete molded case circuit breaker from Eaton protects distribution panels by interrupting faults with precision. In busy facilities, selecting a device with reliable trip characteristics and straightforward installation helps minimize downtime and misconfiguration. While exact certifications require confirmation from Eaton, this model is designed for 440 Vac operation with a 25 kAIC interrupt rating, aligning with standard distribution protection practices; typical engineers verify CE, IP, and SIL compatibility through the manufacturer. The combination of compact form, reliable performance, and front-access installation adds business value by simplifying panel construction, improving uptime, and reducing field labor costs. This makes it well-suited for new builds and retrofit projects in industrial environments.
Product Information
Extended Description
NZMB2-A80-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adjustable magnetic trip, 400-700A, Three-pole, 80A, 440 Vac, 25 kAIC, Distribution circuit protection, 63-80A, 480-800A delayed, Front screw, 63-80A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-A80-NA
EAN
4015082692124
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
80 A
Voltage rating
440 Vac
Trip Type
T185
Circuit breaker type
NZMB2
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
480-800A delayed
Setting Range Ol Protector
63-80A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front screw
Overload range
63-80A
Number of poles
Three-pole
Trip rating
400-700 A
Feature is NZMB2-A80-NA uses the NZM2 frame with a three-pole design and fixed thermal, adjustable magnetic trip, delivering precise protection for three-phase circuits. Business impact: improved protection selectivity reduces nuisance trips and minimizes unplanned downtime across motor and process loads. Application: ideal for distribution boards and motor control centers in 440 Vac systems with up to 25 kAIC fault current. Feature front screw connections enable quick, secure mounting and easy field wiring, reducing installation time and potential contact issues during servicing. Business impact: faster commissioning and simplified maintenance, contributing to lower labor costs over the product life. Application: suitable for retrofit or new installations in compact panels where space and accessibility matter. Feature includes 63-80 A OL range and 480-800 A delayed trip range, delivering flexible coordination for varied load profiles; Application: critical for plants with mixed motor starts and evolving protection needs. Feature accessories rocker lever and motor drive expand control options, supporting remote operation and enhanced motor protection strategies; Application: beneficial in centralized control rooms and MCCs. Feature setting range and trip rating support precise coordination with upstream protection devices, ensuring selectivity and reduced system-wide impact during faults.
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FAQs
Front screw terminals simplify wiring and reduce installation time in panelboards and MCCs. Ensure correct torque on conductor lugs, verify insulation clearance, and follow Eaton installation guidelines to maintain proper short-circuit withstand and trip performance. Compatibility with compatible bus bars and motor drive accessories enhances wiring efficiency and serviceability.
Key specs include an 80 A amperage rating, 440 Vac voltage rating, 25 kAIC short-circuit breaking capacity, and a three-pole NZMB2 device in the NZM2 frame. Trip type is T185 with a setting range OL of 63-80 A and an adjustable short-circuit release range of 480-800 A delayed, supporting 400-700 A trip ratings for larger fault currents.
Yes. The device combines a fixed thermal with an adjustable magnetic trip and a 3-pole configuration, making it suitable for motor control centers and distribution panels where motor inrush and fault protection coordination are critical. Accessories like rocker lever and motor drive support enable integrated motor protection strategies.
Formal certification details are not listed in the data; Eaton recommends confirming CE, IP, SIL, and other relevant approvals directly with the manufacturer. The NZMB2-A80-NA is designed for 440 Vac operation with high fault-current capability, and Eaton can provide official certification documentation upon request.
The front-access design, robust protection features, and modular NZM2 frame alignment support reduced maintenance time and faster fault diagnosis. The adjustable magnetic trip enables selective coordination, reducing unnecessary outages and improving equipment uptime, which translates to lower downtime costs and improved plant productivity over the product life cycle.