Eaton NZMN2-AF40-BT-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMN2-AF40-BT-NA
Quick Summary
Eaton NZMN2-AF40-BT-NA molded case circuit breaker protects distribution panels in industrial environments. This device provides reliable overcurrent protection for three-pole circuits while fitting compact NZM2 frames. Engineers often grapple with coordinating protection with existing hardware, frames, and DC ratings, seeking reliable trip performance. UL Listed certification confirms safety compliance, and the 50 kAIC interrupt rating supports robust short-circuit protection across typical industrial loads. With front-frame clamp mounting and standard accessories, it simplifies installation, reduces panel complexity, and improves serviceability. By combining precise protection with a streamlined installation, this breaker helps minimize downtime and support compliant, efficient power distribution.
Product Information
Extended Description
NZMN2-AF40-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMN2, Thermal-magnetic trip, Three-pole, 40A, 690 Vac, 750 Vdc, 50 kAIC, Box, Distribution circuit protection, 40-40A, 320-400A delayed, Front frame clamp, 40-40A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN2-AF40-BT-NA
EAN
4015081073023
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
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
Adjustment range short-circuit release
320-400A delayed
Setting Range Ol Protector
40-40A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front frame clamp
Overload range
40-40A
Number of poles
Three-pole
Feature: 40 A amperage rating with a voltage range of 690 Vac / 750 Vdc and a 50 kAIC interrupt capacity. Business Impact: Enables reliable protection for medium-sized distribution circuits while maintaining compact footprint and high short-circuit withstand. Application: Ideal for distribution panels in manufacturing lines and process control environments, delivering predictable coordination with downstream protection devices. Feature: Three-pole NZMN2 frame construction. Business Impact: Improves fault isolation and reduces panel real estate needs, enabling neater wiring and simpler fault tracing. Application: Suitable for main or feeder protection in multi-line power distribution schemes within industrial facilities. Feature: Thermal-magnetic trip with T268 curve and adjustable elements (320-400 A delayed, 40-40 A OL range). Business Impact: Delivers precise overload and short-circuit protection, improving uptime and reducing nuisance trips in motor and process loads. Application: Supports motor control circuits and mixed-load panels where fast response and coordination are critical. Feature: Front-frame clamp terminals and front-access mounting. Business Impact: Simplifies installation, enables quicker retrofits, and enhances accessibility for maintenance or upgrades. Application: Facilitates retrofit projects and new builds in control panels where space is at a premium. Feature: Accessories including rocker lever and motor drive. Business Impact: Extends functionality without additional rework, enabling seamless control integration and easier operation in field environments. Application: Useful for panels requiring quick manual control or motor-driven protection workflows. Feature: Certifications and warranty (UL Listed; Eaton policy). Business Impact: Supports regulatory compliance and predictable after-sales support, reducing risk during commissioning and operation. Application: Suitable for facilities enforcing UL safety standards and requiring documented warranty coverage.
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FAQs
Yes. NZMN2-AF40-BT-NA is a three-pole breaker designed for the NZM2 frame and uses a front-frame clamp for secure mounting. This arrangement simplifies panel installation, reduces space requirements, and enables straightforward retrofits in existing distribution panels. Ensure correct alignment with the NZM2 mounting footprint and clamp specifications during assembly.
The device features a 40 A rating, 690 Vac / 750 Vdc voltage rating, and 50 kAIC interrupt capacity, with a T268 thermal-magnetic trip and a 40-40 A overload setting. These specs support coordinated protection for mid-range distribution circuits, enabling accurate detection of overloads and short circuits while preserving downstream device safety and minimizing nuisance trips.
Industrial facilities with moderate-current distribution needs benefit most, including manufacturing lines, packaging and material handling, HVAC and process control panels. The three-pole NZM2 configuration, high interrupt capacity, and front-frame mounting support clean, reliable protection for feeders and panelboards, while simplifying integration with existing motor control and switchgear.
The NZMN2-AF40-BT-NA is UL Listed, providing recognized safety compliance for electrical protection devices. For regional installations, verify local codes and standards (such as CE marking where applicable) and coordinate with the UL-listed status for documentation and commissioning. Always follow manufacturer installation instructions and site safety requirements to maintain compliance.
The product is covered by Eaton’s warranty policy (one year from installation or 18 months from shipment, whichever occurs first). Regular inspection of the front-frame clamp integrity, trip performance checks, and torque verification on terminations help sustain protection reliability. The device’s high interrupt capacity and durable construction translate into reduced downtime and favorable total cost of ownership over panel life.