Eaton NZMB2-AF110-BT-NA Molded Case Breaker - 25 kAIC
Part Number: NZMB2-AF110-BT-NA
Quick Summary
NZMB2-AF110-BT-NA is a molded case circuit breaker designed to protect industrial distribution panels. Engineers often contend with improper trip settings and slow fault isolation, which can drive downtime and maintenance costs. Compliances vary by region, so please verify CE, SIL, and IP ratings with the manufacturer; Eaton devices are built to broad industry standards and support regional certifications. This model features front-frame clamp terminals, an adjustable overload range, and a 25 kAIC interrupt rating to ensure fast, selective tripping. With 110 A continuous rating and 440 Vac operation, it scales across mid-size power distributions. The product also offers quick installation, compatibility with motor drives, and dependable protection as part of a broader Eaton protection strategy.
Product Information
Extended Description
NZMB2-AF110-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adj. magnetic trip, 750-1250A delayed, Three-pole, 110A, 440 Vac, 25 kAIC, Box, Distribution circuit protection, 110-110A, Front frame clamp, 110-110A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF110-BT-NA
EAN
4015081072903
Product Length/Depth
5.9 in
Product Height
7.7 in
Product Width
4.1 in
Product Weight
4.1 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
110 A
Voltage rating
440 Vac
Trip Type
T185
Circuit breaker type
NZMB2
Terminals
Box
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Setting Range Ol Protector
110-110A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
110-110A
Number of poles
Three-pole
Trip rating
750-1250 A delayed
Feature: Fixed thermal, adjustable magnetic trip with T185 curve. Business Impact: Enables precise coordination for critical loads, reducing nuisance trips and improving uptime. Application: Suitable for distribution panels in manufacturing lines where reliable protection is essential. Feature: NZM2 frame, three-pole design with 110 A rating at 440 Vac. Business Impact: Delivers robust 3-phase protection for balanced motor and load circuits, simplifying panel design and wiring. Application: Ideal for industrial control panels and MCCs in process industries. Feature: Front-frame clamp terminals with box connections. Business Impact: Eases front-access installation and maintenance, lowering labor time and wiring errors. Application: Quick retrofit into existing enclosures and new panel builds. Feature: Accessories including rocker lever and motor drive compatibility. Business Impact: Enhances operability and integration with automation workflows, improving overall system responsiveness. Application: Upgrade paths for motor control centers and programmable logic-based protection schemes. Feature: 25 kAIC short-circuit rating and 110 A setting range. Business Impact: Delivers high fault-current withstand and expandable protection settings, reducing upstream disturbances. Application: Suitable for medium-sized industrial feeders and high-energy environments where reliability is critical.
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FAQs
This unit uses front-frame clamp terminals and matches NZM2 frame three-pole configurations. It fits standard industrial distribution panels and MCCs, with a 5.9 in depth, 7.7 in height, and 4.1 in width footprint. Confirm enclosure space for safe clearance and ensure panel busbar clearances meet regional standards before mounting.
The T185 trip type provides a fixed thermal element with an adjustable magnetic trip, enabling precise coordination for overloads and short circuits. A 25 kAIC interrupt rating supports fast clearing of high-energy faults, minimizing arc duration and potential damage to downstream equipment in medium-to-large power systems.
Yes. With a three-pole NZMB2 configuration, 110 A rating, and 440 Vac operation, the device is well-suited for motor-driven loads and distribution circuits in manufacturing environments. Front-frame mounting and compatible accessories simplify integration with motor drives and control schemes, improving reliability in high-demand lines.
Compliances indicate 'Contact Manufacturer' for region-specific certifications. While CE, SIL, and IP ratings vary by market, Eaton products are commonly aligned with global standards. Always verify regional approvals with the supplier to ensure Your facility’s regulatory and safety requirements are met.
The product follows Eaton’s warranty policy, typically one year from installation or eighteen months from shipment, whichever comes first. For maintenance, rely on standard factory settings and documented installation procedures. Regular inspection of trip settings and terminal integrity helps sustain protection performance and minimize unplanned downtime.