Eaton NZMB1-A80 Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-A80
Quick Summary
The Eaton NZMB1-A80 molded case circuit breaker protects distribution panels by fast fault interruption in industrial electrical systems. Engineers often struggle with nuisance trips, mis-specified trip curves, and installation challenges that slow commissioning. Key considerations across IEC/CE standards, IP-rated enclosures, and accurate short-circuit performance help ensure safe, reliable operation in harsh environments. This device supports robust distribution circuit protection while enabling compact panel layouts and straightforward maintenance, delivering real business value through uptime, safety, and simplified procurement for industrial automation projects.
Product Information
Extended Description
NZMB1-A80 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 480-800A trip rating, Three-pole, 80A, 440 Vac, 25 kAIC, Distribution circuit protection, Rocker lever, 63-80A, Front frame clamp, 63-80A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-A80
EAN
4015082590789
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
3 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
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
63-80A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
63-80A
Number of poles
Three-pole
Trip rating
480-800 A
Feature: Thermal-magnetic protection with T268 trip type delivers selective tripping and fast fault clearance. Business Impact: Reduces unplanned downtime and protects critical equipment, improving line availability. Application: Ideal for distribution panels in manufacturing lines and processing plants where reliable protection is essential. Feature: 80 A ampacity with 25 kAIC short-circuit rating for 440 Vac three-pole operation. Business Impact: Enables safe handling of typical motor loads and feeders while limiting fault current exposure. Application: Suitable for medium- to high-demand distribution circuits in industrial facilities. Feature: Front frame clamp connection simplifies mounting and wiring. Business Impact: Speeds installation and reduces field wiring errors, cutting commissioning time. Application: Compatible with NZM1 frame systems and modular panel architectures. Feature: Rocker lever operation supports quick manual testing and reset without tools. Business Impact: Improves operability for maintenance staff and technicians, lowering service time. Application: Common in control panels and switchgear assemblies. Feature: Three-pole configuration with 63-80A overload setting range and 480-800 A trip rating. Business Impact: Provides precise protection coordination for balanced three-phase loads, improving selectivity and energy efficiency. Application: Ideal for distribution circuits in process and automation environments. Feature: Compact form factor and front-frame clamp design enhance compatibility with NZM1 frames and standard enclosures. Business Impact: Maximizes panel density and simplifies retrofit projects, reducing total installed cost. Application: Suitable for new builds and modernization programs where space is at a premium.
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FAQs
The NZMB1-A80 uses a front frame clamp connection designed for easy mounting in NZM1 frame based panels. It supports standard three-pole configurations and a rocker lever for quick operation. For proper installation, verify enclosure compatibility and ensure busbar alignment and torque specifications meet Eaton recommendations.
This device employs a thermal-magnetic T268 trip type with an 80 A nominal rating and a short-circuit capacity of 25 kAIC at 440 Vac. It is a three-pole breaker with a setting range of 63-80A, providing coordinated protection for distribution circuits and motors in balanced three-phase systems.
Yes. The 80 A ampacity and 25 kAIC fault current rating make it appropriate for distribution feeders and motors in manufacturing environments. Its NZM1 frame compatibility, front-frame clamp, and ergonomic rocker lever support reliable, scalable protection while enabling compact panel designs and straightforward maintenance.
Compliances for this product are specified by the manufacturer and may vary by region. In practice, verify applicable standards such as IEC/CE for international use and consider enclosure IP protection in harsh environments. Always consult the Eaton specification sheet and regional regulatory requirements to confirm exact certifications for your application.
The product carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. For ROI, perform periodic inspections, torque checks on connections, and functional testing of the trip mechanism. A robust MCCB like the NZMB1-A80 minimizes downtime and extends service intervals in critical automation installations.