Eaton NZMN3-AEF450-NA Molded Case Circuit Breaker - UL Listed
Part Number: NZMN3-AEF450-NA
Quick Summary
NZMN3-AEF450-NA is a molded case circuit breaker that provides reliable protection for industrial distribution panels and motor drive systems. Engineers often struggle with coordinating protection while minimizing nuisance trips during high load or transient faults. This unit carries UL Listed safety certification and is designed for robust industrial use, delivering precise thermal-magnetic tripping and selective protection. With a 450 A rating and high interrupt capability, it supports safe fault clearance and long-term uptime. The compact NZM3 frame fits standard panels, and front screw connectivity simplifies installation and maintenance, delivering real business value through improved reliability and reduced downtime.
Product Information
Extended Description
NZMN3-AEF450-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM3-frame, NZMN3, Thermal-magnetic trip, Three-pole, 450A, 690 Vac, 50 kAIC at 415 Vac, 42 kAIC at 480 Vac, Distribution circuit protection, Rocker lever, motor drive, Front screw
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMN3-AEF450-NA
EAN
4015082692797
Product Length/Depth
7 in
Product Height
7 in
Product Width
7 in
Product Weight
16.17 lb
Certifications
UL Listed
Amperage Rating
450 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMN3
Frame
NZM3
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Interrupt rating
50 kAIC at 415 Vac 42 kAIC at 480 Vac
Connection
Front screw
Number of poles
Three-pole
Feature: Thermal-magnetic trip (T268) and 450 A rating → Business Impact: Precise fault isolation reduces unnecessary trips, protecting critical loads in motor drives and distribution panels. Application: Industrial panels with high inrush and motor loads benefit from reliable coordination and reduced downtime. Long-tail keywords: thermal-magnetic protection, 450 A circuit breaker, motor drive protection, distribution circuit protection.Feature: 690 V AC voltage rating and 50 kAIC at 415 Vac / 42 kAIC at 480 Vac → Business Impact: High fault-current handling supports safe operation in harsh plant environments, improving compliance with electrical protection standards. Application: Heavy-duty industrial installations and critical equipment panels. Long-tail keywords: high interrupt rating, fault-current capability, 690 VAC protection, industrial protection standards.Feature: NZMN3 frame, three-pole design and front screw connection → Business Impact: Standardized form factor and easy mounting reduce installation time and improve panel density. Application: New builds and retrofit projects in process industries. Long-tail keywords: NZM3 frame, three-pole breaker, front-access installation, panel mounting efficiency.Feature: Rocker lever and motor drive accessories → Business Impact: Simple operation and quick retripping improve maintenance efficiency and operator ergonomics. Application: Motor control centers and drive panels requiring fast action and clear status indication. Long-tail keywords: rocker lever, motor drive accessories, easy retrip, maintenance efficiency.Feature: UL Listed certification and compact footprint (7 in x 7 in x 7 in) → Business Impact: Demonstrates safety compliance while maximizing cabinet space and standardization across fleets. Application: OEMs and integrators standardizing protection across multiple skids. Long-tail keywords: UL Listed, compact molded case breaker, panel standardization, space optimization.
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FAQs
The NZMN3-AEF450-NA uses a front screw connection and belongs to the NZM3 frame family, enabling straightforward panel mounting and standardization across installations. This compatibility reduces commissioning time and ensures reliable clamping on standard busbars while preserving safe clearances for maintenance.
The breaker provides 50 kAIC at 415 Vac and 42 kAIC at 480 Vac, allowing rapid fault clearance in high-energy fault events. This high interrupt rating supports safe operation for motor drives and distribution panels, minimizing damage to equipment and reducing downtime during faults.
Yes, the device is UL Listed, indicating conformity with recognized safety standards for electrical protection products. This certification helps ensure compliance in North American installations and simplifies procurement and inspection processes in regulated environments.
Front-access screws and a three-pole design streamline installation and maintenance in motor drive panels. The rocker lever and optional motor-drive accessories facilitate quick operation and safer re-tripping, minimizing downtime during routine service and ensuring consistent protection for drive systems.
By delivering reliable protection with a compact footprint, high interrupt rating, and UL Listed compliance, the NZMN3-AEF450-NA reduces fault-related downtime and equipment damage. Its straightforward installation and durable design lower maintenance costs and extend service life across multiple panels and motor drives.