Eaton NZMN1-A50-NA Molded Case Breaker - UL Listed
Part Number: NZMN1-A50-NA
Quick Summary
NZMN1-A50-NA molded case circuit breaker protects distribution panels in industrial automation and power systems. When panel faults or short circuits threaten uptime, you need reliable protection that won’t complicate installation or maintenance. This model conforms to UL Listed standards and is compatible with CSA and IEC requirements, supporting safe, compliant operation across regions. Its compact NZM1 frame and front-frame clamp promote fast installs, scalable protection in modern distribution cabinets, and easier field servicing. For engineers and procurement teams, it translates into predictable risk profiles, reduced panel downtime, and faster project commissioning.
Product Information
Extended Description
NZMN1-A50-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMN1, Thermal-magnetic trip, 300-500A trip rating, Three-pole, 50A, 500 Vdc, 50 kAIC, Dist. circuit prot., 40-50A, Front frame clamp, 40-50A, conforms to UL/CSA and IEC
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN1-A50-NA
EAN
4015082742393
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
2.5 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
50 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
40-50A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
50 kAIC
Connection
Front frame clamp
Overload range
40-50A
Number of poles
Three-pole
Trip rating
300-500 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMN1-A50-NA
Selling Policy 25-000 - Distribution and Control Products and Services
The 50 A amperage rating paired with 690 Vac/500 Vdc voltage rating provides precise overload protection for three-phase loads, reducing nuisance trips and protecting critical equipment, which translates to shorter downtime and lower maintenance costs. The T268 trip type ensures fast, predictable fault clearance, improving system reliability for motor starters and PLC-controlled processes. With a 50 kAIC short-circuit capacity, the breaker safely interrupts severe faults in dialogue with downstream protection schemes. Front frame clamp connections simplify installation and enable secure mounting in crowded panels, supporting faster maintenance and fewer field reworks. The NZMN1 frame and 3-pole design offer optimized space in compact switchgear while maintaining coordination with other protective devices. The 40-50A setting range gives technicians flexibility to tailor protection without replacing devices, supporting scalable protection for evolving line-ups. UL Listed, CSA-compatible, and IEC-conforming design reduces regulatory risk and speeds cross-border deployments.
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FAQs
NZMN1-A50-NA is designed for front-frame clamp mounting on the NZM1 frame. Its compact dimensions (2.68 in depth, 5.71 in height, 3.54 in width) fit standard distribution panels, and the 3-pole configuration with 50 A rating supports common motor control and process lines. Ensure panel entries accommodate the 50 kAIC interrupt rating and observe clearance for accessibility during testing and routine maintenance.
Key specs include 50 A current rating, voltage rating of 690 Vac / 500 Vdc, three-pole configuration, trip type T268, short-circuit breaking capacity and interrupt rating of 50 kAIC, and a 40-50 A overload range with a 300-500 A trip rating.
Yes. The device is rated for 690 Vac, making it suitable for industrial distribution panels and machine-control circuits that require robust high-voltage protection with reliable tripping performance.
The product is UL Listed and designed to conform with CSA and IEC requirements, helping meet regulatory and regional safety expectations across North American and international deployments.
Using NZMN1-A50-NA can reduce downtime and maintenance costs by delivering reliable overload protection and fast fault clearance. The 50 kAIC rating helps handle severe faults without device damage, while the front-frame clamp and standard dimensions speed installation and upgrades. A long-term ROI comes from improved panel reliability, fewer field service calls, and smoother project commissioning.