Eaton NZMN1-AF45-NA Molded Case Breaker - 50 kAIC
Part Number: NZMN1-AF45-NA
Quick Summary
NZMN1-AF45-NA molded case circuit breaker protects distribution panels in industrial automation and power distribution. Operators and maintenance teams often confront nuisance trips and unplanned outages that derail production schedules. UL Listed certification provides safety compliance for critical electrical systems, giving buyers confidence in performance under load. This device integrates 45 A protection with a high short-circuit rating, enabling scalable panel design while reducing replacement cycles. As part of Eaton's NZM1 frame family, it offers reliable thermal‑magnetic protection, front-frame clamp installation, and compatibility with 690 Vac and 500 Vdc systems, delivering consistent performance in demanding environments. It supports efficient maintenance, ease of retrofits, and optimized total cost of ownership for panel builders and engineering teams.
Product Information
Extended Description
NZMN1-AF45-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMN1, Thermal-magnetic trip, 300-500A trip rating, Three-pole, 45A, 690 Vac, 500 Vdc, 50 kAIC, Distribution circuit protection, 45-45A, Front frame clamp, 45-45A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN1-AF45-NA
EAN
4015082742300
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
3.5 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.
Certifications
UL Listed
Amperage Rating
45 A
Voltage rating
690 Vac, 500 Vdc
Trip Type
T268
Circuit breaker type
NZMN1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
45-45A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front frame clamp
Overload range
45-45A
Number of poles
Three-pole
Trip rating
300-500 A
Three-pole NZMN1 frame with front-frame clamp simplifies panel assembly and serviceability, delivering faster installation and fewer field adjustments while maintaining robust distribution circuit protection for control cabinets and MCCs. This translates to reduced commissioning time and lower labor costs during upgrades or expansions. The thermal-magnetic trip T268 delivers precise coordination between overload protection and fault interruption, minimizing nuisance trips and protecting motors and loads in dynamic industrial environments. With a 45 A setting range and a 300-500 A trip rating, the device supports scalable protection schemes for mixed-load panels, improving reliability for critical automation lines. Operating at 690 Vac and 500 Vdc with a 50 kAIC short-circuit capacity ensures resilience against high fault currents in demanding plant layouts. An integrated rocker lever as an optional accessory enhances user ergonomics during testing and maintenance. UL Listed certification reinforces safety compliance across regional installations, while a compact NZM1 frame footprint enables dense panel layouts and straightforward retrofits, reducing panel depth requirements and enabling better busbar utilization. Designed for distribution circuit protection in industrial automation, this MCCB aligns with motor control centers and energy management strategies, delivering measurable improvements in uptime, safety, and total cost of ownership.
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FAQs
The NZMN1-AF45-NA uses a front-frame clamp mounting compatible with the NZM1 frame family, enabling quick installation in standard distribution panels and motor control centers. Its compact 2.68 in depth, 5.71 in height, and 3.54 in width help maintain dense panel layouts, while the three-pole configuration suits multi-wire feeders and three-phase systems.
NZMN1-AF45-NA employs a thermal-magnetic T268 trip type with an adjustable setting range of 45-45 A and a trip rating of 300-500 A. This combination delivers precise overload protection and fast fault interruption, reducing equipment wear and preventing cascading failures in distribution circuits.
This MCCB is ideal for industrial automation panels, control gear in manufacturing lines, and motor control centers requiring reliable distribution circuit protection. With 690 Vac and 500 Vdc compatibility and a 50 kAIC interruption rating, it supports high-demand applications such as conveyors, pumps, and process equipment in harsh industrial environments.
NZMN1-AF45-NA is UL Listed, confirming compliance with recognized safety standards for electrical protection devices. This certification helps ensure safe installation, predictable performance, and easier regulatory acceptance across regions that rely on UL-based safety criteria for MCCBs and distributive protection equipment.
The device’s high short-circuit rating (50 kAIC) supports robust protection for critical loads, reducing unplanned downtime. Front-frame mounting and standard NZM1 integration streamline installation, retrofits, and service, lowering commissioning time and maintenance costs. Combined with Eaton’s warranty policy, this translates to lower lifecycle costs and improved uptime for panel builders and facilities engineers.