Eaton NZMB2-AF100-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB2-AF100-NA
Quick Summary
Eaton NZMB2-AF100-NA Molded Case Circuit Breaker provides robust distribution protection for industrial panels and machines. When downtime, nuisance trips, or wiring complexity disrupts operations, this device helps reduce maintenance costs and improve line availability. In many regions, CE marking, IEC approvals, and UL compatibility are standard benchmarks—verify regional certifications with Eaton. With the compact NZM2 frame, front screw connections, and adjustable trip, it supports efficient panel layouts and easier serviceability, delivering reliable protection where it matters most.
Product Information
Extended Description
NZMB2-AF100-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 640-1120A, Three-pole, 100A, 440 Vac, 25 kAIC, Distribution circuit protection, 100-100A, 600-1000A delayed, Front screw, 100-100A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF100-NA
EAN
4015082691646
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 in
Product Weight
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
100 A
Voltage rating
440 Vac
Trip Type
T185
Circuit breaker type
NZMB2
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
600-1000A delayed
Setting Range Ol Protector
100-100A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front screw
Overload range
100-100A
Number of poles
Three-pole
Trip rating
640-1120 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB2-AF100-NA
Feature → Business Impact → Application: The NZMB2-AF100-NA uses a three-pole NZM2 frame and a 100 A, 440 Vac rating to deliver predictable distribution protection in motor control centers and panel boards, reducing fault-related downtime and protecting expensive equipment. This translates to improved uptime metrics and lower repair costs in manufacturing lines and processing plants. Application: control panels, machine enclosures, and distribution feeders requiring reliable 25 kAIC interrupt capability and front-screw wiring for faster installation. Feature → Business Impact → Application: Fixed thermal with adjustable magnetic trip (T185) enables precise coordination across motor starters and feeders, minimizing nuisance trips while maintaining fast fault interruption. Benefit: improved process stability and reduced energy waste. Application: large drives and high-inertia loads where trip settings must be tuned for startup surges and steady-state currents. Feature → Business Impact → Application: Adjustable settings, including 600-1000 A delayed overload release and 100-100 A OL protector range, support selective coordination and easier lifecycle maintenance. Benefit: centralized protection strategy, fewer panel-wide trips, and easier replacement when upgrades occur. Application: multi-zone protection in distribution cabinets and machine racks. Feature → Business Impact → Application: Front screw terminals, compatible rocker lever and motor drive accessory support quick, secure wiring and simple field retrofits. Benefit: reduced commissioning time and simplified maintenance, even in crowded enclosures. Application: retrofit projects and new builds where wiring density is a concern. Feature → Business Impact → Application: Comprehensive Eaton warranty with documented回 terms provides predictable ownership costs and post-sales support. Benefit: lower total cost of ownership and faster issue resolution. Application: any installation requiring long-term reliability and manufacturer-backed service.
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FAQs
The NZMB2-AF100-NA is designed with front screw connections for straightforward mounting in control panels. It supports a three-pole configuration on the NZM2 frame and can be fitted with optional accessories such as a rocker lever or motor drive, enabling quick field retrofits and consistent wiring layouts in crowded enclosures.
Key specifications include a 100 A amperage rating, 440 VAC voltage rating, and a short-circuit breaking capacity of 25 kAIC. The trip type is T185, and the device accommodates a 600-1000 A delayed overload release with a 100-100 A OL protector setting, enabling coordinated protection for diverse load profiles.
Yes. The product is part of the NZM2 frame family and features front screw terminals, aligning with common installation practices in distribution panels. Accessories such as a rocker lever and motor drive are available to support specific control schemes and retrofit projects.
Compliances for this product are listed as 'Contact Manufacturer' for regional approvals. To verify certifications, consult Eaton's documentation or reach out to Eaton sales engineering for your region to confirm UL, CE, IEC or other approvals applicable to your installation site and market.
With a robust 25 kAIC rating, adjustable trip settings, and a compact NZM2 frame, the NZMB2-AF100-NA helps reduce downtime and maintenance costs by improving fault discrimination and easing installation. The included warranty and available accessories further lower total cost of ownership during panel upgrades or capacity expansions.