Eaton NZMN3-AE630 Molded Case Circuit Breaker - UL Listed
Part Number: NZMN3-AE630
Quick Summary
NZMN3-AE630 molded case circuit breaker protects electrical distributions in industrial control panels and feeder circuits. Engineers often face nuisance trips during transient inrush and fault events, which can disrupt production and extend downtime. Key certifications include UL Listed safety certification and compliance with industry safety standards to support regulatory audits. Designed around the NZM3 frame with front screw connections, it enables compact layouts and straightforward field installation. The 630 A rating and 690 V AC capability position this breaker for main feeder protection in mid-size to large electrical distributions, offering reliability, ease of maintenance, and scalable control-systems compatibility.
Product Information
Extended Description
NZMN3-AE630 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM3-frame, NZMN3, Thermal-magnetic trip, 1260-5040A delayed, Three-pole, 630A, 690 Vac, 50 kAIC at 415 Vac, 42 kAIC at 480 Vac, Distribution circuit protect., Front screw, 315-630A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN3-AE630
EAN
4015082591151
Product Length/Depth
5.512 in
Product Height
5.512 in
Product Width
5.512 in
Product Weight
15.84 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
630 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMN3
Frame
NZM3
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Setting Range Ol Protector
315-630A
Short-circuit breaking capacity
50 kAIC
Interrupt rating
42 kAIC at 480 Vac 50 kAIC at 415 Vac
Connection
Front screw
Overload range
315-630A
Number of poles
Three-pole
Trip rating
1260-5040 A delayed
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMN3-AE630
Thermal-magnetic trip (T268) combines time-delayed overload protection with instantaneous fault interrupt. Business impact: reduces nuisance trips while preserving coordination with upstream devices, improving overall system uptime. Application: suitable for distribution circuits in industrial panels where predictable, selective protection is required. High amperage and voltage ratings (630 A, 690 V AC) support main feeders, enabling a single device to cover large loads. Business impact: simplifies wiring and reduces parts count. Application: mid-size to large panels where space and reliability are critical. NZM3 frame with front screw connection enables a compact footprint and simplified wiring. Business impact: faster installation, reduced panel depth, and easier retrofits in existing enclosures. Application: new builds and modernization projects where space is at a premium. Three-pole design with front-accessible setting range and optional accessories (rocker lever, motor drive). Business impact: clear operator access and flexible motor-control integration reduce commissioning time and maintenance costs. Application: industrial drives and control panels needing reliable motor protection. UL Listed certification ensures compliance with safety standards. Business impact: lower risk of non-conformance, easier supplier qualification, and smoother regulatory audits. Application: any UL-based protection scenario across energy, automation, and process industries. Additional value: rugged construction, documented spec sheet, and Eaton support ecosystem enable confident lifecycle management and straightforward expansions.
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FAQs
Yes. NZMN3-AE630 uses front screw terminals designed for straightforward wiring in standard distribution panels. When retrofitting, ensure enclosure clearance and torque specifications per Eaton's installation guidelines, and leverage the front-access design to minimize panel disassembly and downtime during upgrades.
The breaker is rated for 690 V AC with a short-circuit breaking capacity of 50 kAIC at 415 V and 42 kAIC at 480 V. It supports a 315–630 A setting range and three-pole configuration, making it suitable for main feeders in mid-size to large industrial installations.
Yes, NZMN3-AE630 is part of the NZM3 frame family. This compatibility translates to uniform mounting dimensions, coordinated trip characteristics, and simplified spares management across multiple breakers in the same panel architecture, reducing engineering effort and stock diversity.
The device carries UL Listed certification, confirming adherence to established safety standards for distribution circuit protection. This supports compliance in UL-based installations and streamlines supplier qualification and regulatory audits within many industrial environments.
The combination of robust fault interruption (50 kAIC at 415 V / 42 kAIC at 480 V), 630 A rating, compact NZM3 frame, and front-screw installation reduces downtime, speeds commissioning, and simplifies maintenance. It also lowers risk through UL Listed certification, enabling faster procurement and easier future upgrades.