Eaton NZMH3-AEF350-NA Molded Case Circuit Breaker - 690V
Part Number: NZMH3-AEF350-NA
Quick Summary
Eaton NZMH3-AEF350-NA is a molded case circuit breaker for reliable distribution protection in industrial power systems. In demanding environments, you need fast fault isolation, easy maintenance, and clear trip settings to minimize downtime. Compliance details should be verified with the manufacturer, with attention to standards and certifications applicable to your region and industry. For engineers and procurement teams, this unit offers compact NZM3 frame compatibility, a 690 V AC rating, and three-pole protection that streamlines panel integration while supporting future motor-drive and feeder protection needs. The combination of robust electrical protection, straightforward installation, and Eaton’s warranty supports lower total cost of ownership over the life of the installation.
Product Information
Extended Description
NZMH3-AEF350-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM3-frame, NZMH3, Thermal-magnetic trip, Three-pole, 350A, 690 Vac, 100 kAIC at 480 Vac, Distribution circuit protection, 350-350A, 700-3850A delayed, Front screw, 350-350A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMH3-AEF350-NA
EAN
4015082692858
Product Length/Depth
5.51 in
Product Height
6.53 in
Product Width
6.53 in
Product Weight
5.5 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.
Compliances
Contact Manufacturer
Amperage Rating
350 A
Voltage rating
690 V AC
Trip Type
T268
Circuit breaker type
NZMH3
Frame
NZM3
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
700-3850A delayed
Setting Range Ol Protector
350-350A
Short-circuit breaking capacity
150 kAIC
Interrupt rating
100 kAIC at 480 Vac
Connection
Front screw
Overload range
350-350A
Number of poles
Three-pole
Feature → Business Impact → Application: The NZMH3-AEF350-NA uses a thermal-magnetic trip to deliver reliable overcurrent protection, reducing nuisance trips and improving system uptime in distribution circuits for manufacturing lines and data centers. This translates to measurable downtime reduction and safer, more predictable operation in electrical rooms and motor control centers. Feature → Business Impact → Application: Three-pole design with front screw connection simplifies wiring and installation, enabling faster panel assembly and easier future upgrades in new builds or retrofit projects. Feature → Business Impact → Application: 350 A, 690 VAC ratings and 100 kAIC at 480 VAC provide ample short-circuit withstand for typical industrial feeders, improving selectivity and protecting downstream equipment without overengineering. Feature → Business Impact → Application: NZM3 frame compatibility and available accessories like rocker lever and motor drive support flexible control schemes and smoother maintenance routines in high-demand environments. Feature → Business Impact → Application: Adjustable short-circuit release range (700–3850 A delayed) and OL protector setting (350 A) offer tuning for site-specific protection coordination, reducing miscoordination risks in complex electrical networks. Feature → Business Impact → Application: Compact footprint (5.51 in L × 6.53 in W × 6.53 in H) and 5.5 lb weight facilitate space-constrained installations in switchgear, MCCs, and service panels while maintaining robust safety margins.
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FAQs
The NZMH3-AEF350-NA uses a front-screw connection on an NZM3 frame, making it ideal for standard distribution panels and motor control centers. Its compact footprint and pole configuration support straightforward replacement and retrofit in existing electrical rooms.
This unit is rated for 350 A at 690 V AC, with a thermal-magnetic trip type (T268) and a short-circuit breaking capacity of 150 kAIC. It also offers a high available withstand of 100 kAIC at 480 VAC, enhancing protection during fault events.
Yes. The three-pole design, front screw connection, and NZM3 frame are compatible with MCCs and feeder circuits in industrial plants, providing reliable protection while supporting motor-drive applications with optional accessories.
Compliance specifics should be confirmed with Eaton; the product lists ‘Compliances: Contact Manufacturer.’ Verify CE, UL, or other region-specific certifications as applicable to your installation site.
Warranty terms follow Eaton Selling Policy 25-000: one year from date of installation or eighteen months from shipment, whichever occurs first, with options for extended support through Eaton’s service programs.