Eaton NZMN2-A40-BT-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMN2-A40-BT-NA
Quick Summary
The NZMN2-A40-BT-NA molded case circuit breaker protects electrical distribution panels in industrial automation and motor-drive applications. Engineers often struggle with nuisance trips and unclear protection boundaries, which can drive downtime and maintenance costs. UL Listed certification supports safety and reliable performance across 690 Vac and 750 Vdc systems, helping meet stringent standards. By combining a proven thermal-magnetic trip with a compact NZM2 frame, this unit simplifies installation, improves protection selectivity, and reduces lifecycle costs for panel builders and end users alike.
Product Information
Extended Description
NZMN2-A40-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMN2, Thermal-magnetic trip type, Three-pole, 40A, 690 Vac, 750 Vdc, 50 kAIC, Box, Distribution circuit protection, Rocker lever, motor drive
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN2-A40-BT-NA
EAN
4015081074358
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
5.16 lb
Compliances
Contact Manufacturer
Certifications
UL Listed
Amperage Rating
40 A
Voltage rating
690 Vac, 750 Vdc
Trip Type
T268
Circuit breaker type
NZMN2
Terminals
Box
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Interrupt rating
50 kAIC
Number of poles
Three-pole
Power Xpert Protection Manager x64
Eaton Specification Sheet - NZMN2-A40-BT-NA
Intelligent power starts with accurate, actionable data
Feature: 40 A, three-pole NZMN2 frame delivers robust distribution protection. Business Impact: Ensures reliable interruption during fault events while minimizing disturbance to unaffected circuits. Application: Ideal for panelboards in manufacturing lines where motor drives require dependable protection. Feature: Thermal-magnetic trip (T268) with 50 kAIC interrupt rating. Business Impact: Delivers fast fault clearance and high fault tolerance, reducing damage to downstream equipment. Application: Critical in motor-control centers and automation racks with high short-circuit currents. Feature: Voltage rating of 690 Vac / 750 Vdc. Business Impact: Supports both AC and DC driven systems, enabling uniform protection across mixed-technology installations. Application: Suitable for hybrid plants and process lines with diverse drive electronics. Feature: Box terminals and rocker lever actuation. Business Impact: Simplifies wiring and operation, cutting installation time and improving user ergonomics. Application: Field installs and retrofit projects where quick maintenance access matters. Feature: Compact dimensions (4.05 in depth, 7.24 in height, 4.13 in width) and weight around 5.16 lb. Business Impact: Enables dense panel layouts and easier housing integration. Application: Control panels with space constraints and modular enclosure designs. Feature: UL Listed certification. Business Impact: Supports compliance and customer confidence in safety performance. Application: Regulatory approvals and quality assurance in electrical protection.
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FAQs
Begin by verifying panel suitability for a three-pole NZM2 frame breaker and ensure enclosure clearance for 4.13 in width and 7.24 in height. Mount the unit securely, connect box terminals with proper torque, and operate the rocker lever to test engaging and tripping. Follow manufacturer installation guidelines for wiring order and safety clearances, and perform functional testing after commissioning.
The NZMN2-A40-BT-NA is rated for 40 A, with a voltage rating of 690 Vac and 750 Vdc. It uses a thermal-magnetic trip type T268 and offers a 50 kAIC interrupt capability across a three-pole configuration. These specifications support reliable protection in demanding industrial power distribution and motor-drive applications.
Yes. With a three-pole NZMN2 frame, 40 A rating, and a suitable interrupt rating, the breaker provides robust motor-drive protection. The thermal-magnetic trip helps prevent nuisance trips from minor overloads, while the sturdy rocker lever and box terminals simplify installation and maintenance in automation and drive systems.
The product is UL Listed, which supports safety compliance and reliability for electrical protection devices in North American markets. For broader certifications (such as regional CE or IP, if required), consult Eaton’s datasheet or contact the manufacturer for the latest qualification scope and documentation relevant to your project and location.
The device dimensions are 4.05 in depth, 7.24 in height, and 4.13 in width, with an approximate weight of 5.16 lb. This compact profile supports denser panel layouts and easier retrofits in existing enclosures without sacrificing protection performance.