Eaton NZMB2-A80-BT-NA Molded Case Breaker - 25 kAIC
Part Number: NZMB2-A80-BT-NA
Quick Summary
The Eaton NZMB2-A80-BT-NA is a complete molded case circuit breaker for distribution protection in industrial power systems. Too often, engineers face misconfigured trip settings, incorrect coordination, and lengthy commissioning when upgrading protection schemes. Certifications for global deployments typically include CE marking and IEC-based standards, with UL/CSA options available through Eaton—confirm region-specific compliance with the manufacturer. Designed around the NZM2 frame and front-frame clamp terminals, it delivers reliable protection in panels and MCCs while simplifying installation and maintenance for procurement teams.
Product Information
Extended Description
NZMB2-A80-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 480-800A, Three-pole, 80A, 440 Vac, 25 kAIC, Box, Distribution circuit protect., 63-80A, Front frame clamp, 63-80A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-A80-BT-NA
EAN
4015081074266
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
5.17 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
Terminals
Box
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 frame clamp
Overload range
63-80A
Number of poles
Three-pole
Trip rating
480-800 A
Power Xpert Protection Manager x64
Compact circuit-breakers and switch-disconnectors up to 1600 A
Intelligent power starts with accurate, actionable data
Feature: NZM2 frame, 3-pole design, 80 A rating, 440 Vac operation. Business impact: standardization across distribution panels reduces stocking complexity and speeds panel assembly. Application: ideal for industrial power distribution where compact, reliable overcurrent protection is required. Feature: Adjustable overload and short-circuit release ranges (63-80 A OL; 480-800 A delayed). Business impact: precise coordination minimizes nuisance trips and optimizes protection for evolving loads. Application: motor control centers and equipment with variable inrush profiles. Feature: Trip Type T185 with 25 kAIC interrupt capacity. Business impact: ensures safe, rapid interruption of fault currents, improving uptime and personnel safety. Application: critical process lines and high-energy systems requiring robust fault handling. Feature: Front frame clamp terminals. Business impact: straightforward installation and reliable, vibration-resistant connections. Application: retrofit in existing switchgear and new panel builds with box terminals. Feature: Accessories (rocker lever, motor drive) and NZMB2 compatibility. Business impact: simplified operation, faster maintenance, and easier integration with motor control schemes. Application: OEMs and end users deploying standardized protection across multiple machines. Feature: Warranty and support (1 year from installation or 18 months from shipment). Business impact: predictable maintenance planning and reduced total cost of ownership. Application: procurement and lifecycle budgeting for electrical protection components.
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FAQs
Install the NZMB2-A80-BT-NA using the front-frame clamp terminals in standard distribution panels or MCCs. Verify the 80 A nominal rating and 440 Vac operating voltage, then coordinate the wiring to box terminals with proper torque and clearances. Utilize the available rocker lever or motor-drive accessory for fast operation and reliable engagement.
Key specs include three-pole configuration, 80 A amperage rating, 440 Vac voltage rating, and 25 kAIC short-circuit breaking capacity with a T185 trip type. The overload setting range is 63-80 A, and the short-circuit release is adjustable from 480-800 A with a delayed characteristic. Terminals are box-type, and the frame is NZM2.
Yes. The three-pole design, adjustable trip parameters, and high interrupt capacity (25 kAIC) support motor protection within MCCs and distribution panels. The 63-80 A overload range aligns with typical motor protection schemes, while the 480-800 A delayed release helps coordinate with upstream protection and motor starting transients.
Compliances are managed through the manufacturer; region-specific certifications such as CE, UL/CSA, and IEC-based approvals should be confirmed with Eaton for your market. This approach ensures your installation complies with local electrical codes and safety standards while matching your ongoing compliance program.
The unit’s robust fault interruption capacity and reliable thermal-magnetic trip reduce nuisance trips and unplanned downtime, delivering improved uptime. The one-year warranty (or 18 months from shipment) provides initial risk protection, while front-frame clamp wiring and available accessories simplify maintenance and lifecycle management, contributing to lower total cost of ownership over time.