Eaton NZMB1-A80-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-A80-NA
Quick Summary
The Eaton NZMB1-A80-NA molded case circuit breaker protects industrial electrical panels with reliable distribution protection. Choosing the right trip characteristics and mounting method can be challenging, risking unplanned downtime or improper coordination. Compliance and certification context for this product typically includes regional safety listings and standards such as CE marking and UL/IEC approvals, with IP ratings varying by enclosure and installation. With a front-frame clamp, 63-80 A overload range, 480 Vac rating, and 25 kAIC short-circuit capability, it enables fast fault clearance and lower total cost of ownership in distribution circuits.
Product Information
Extended Description
NZMB1-A80-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 480-800A trip rating, Three-pole, 80A, 480 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-NA
EAN
4015082722562
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
80 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
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
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB1-A80-NA
Feature: 80 A amperage rating, three-pole NZMB1 frame, 480 Vac, and 25 kAIC short-circuit capacity. Business impact: Provides robust protection for medium-size distribution feeders with clear protection coordination and high fault-current resilience. Application: Ideal for industrial panel boards serving factory floors and machinery where reliable fault isolation is critical. Feature: Thermal-magnetic trip type (T268) with a 63-80 A setting range. Business impact: Allows precise overload protection and selective coordination to minimize unnecessary trips, reducing downtime. Application: Useful in mixed-load panels and processes with fluctuating currents. Feature: Front-frame clamp connection and rocker lever. Business impact: Simplifies installation, improves serviceability, and speeds field maintenance, cutting commissioning time. Application: Suitable for retrofit and new builds in compact switchboards. Feature: NZM1 frame compatibility and three-pole design. Business impact: Ensures balanced protection across all phases, aiding in safer equipment operation and easier device replacement. Application: Common in distribution circuits for motors, conveyors, and auxiliary power panels. Feature: Warranty and support policy. Business impact: Provides risk mitigation during commissioning and operation, supporting procurement timelines. Application: Beneficial for project planning and long-term maintenance budgeting.
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FAQs
NZMB1-A80-NA uses a front-frame clamp terminal that is part of the NZM1 frame, enabling straightforward panel mounting in three-phase 480 V systems. The rocker lever supports one‑hand operation, and the compact footprint simplifies integration into standard distribution boards designed for NZM1-type breakers. Ensure the panel accepts front-frame clamp devices and follow standard wiring practices for three-pole protection.
This breaker is rated for 80 A, 480 Vac, with a thermal-magnetic trip type (T268) and a 25 kAIC short-circuit rating. It offers a 63-80 A setting range for precise overload protection and the three-pole design ensures balanced protection across all phases, enabling coordinated disconnection during fault conditions.
Yes. The 25 kAIC interrupt rating and 480 V capability make it well-suited for motor feeders and heavy-load panel applications in manufacturing environments. The three-pole configuration provides balanced phase protection, while the front-frame mount simplifies installation in standard switchgear and panel boards used on factory floors.
Compliances are listed as 'Contact Manufacturer' for this model, so confirm regional listings with Eaton before purchase. In practice, molded case breakers of this class typically align with UL/IEC standards and may carry CE markings where applicable. Always verify with local inspectors and ensure panel compatibility and regional regulatory requirements are met.
The product carries a one-year warranty from installation or eighteen months from shipment, whichever comes first, supporting risk management in early use. Regular maintenance should include verifying trip settings, inspecting the rocker lever mechanism, and ensuring proper front-frame mounting. These practices reduce unplanned downtime and extend service life, contributing to improved equipment effectiveness and lower total cost of ownership.