Eaton NZMB1-AF110-NA NZM Molded Case Breaker - 25 kAIC
Part Number: NZMB1-AF110-NA
Quick Summary
NZMB1-AF110-NA is a three-pole molded case circuit breaker designed for reliable distribution protection in industrial power systems. Facilities often struggle with nuisance trips and protection gaps that disrupt production schedules. This device combines a thermal-magnetic trip with a 20–160 A adjustable setting, a 25 kAIC interrupt rating, and the rugged NZM1 frame for dependable service in demanding environments. While the Compliances field notes that standards verification is required with the manufacturer, regional certifications (such as CE or UL) can be pursued through proper endorsement. In practice, it supports scalable protection within panel boards and aligns with front-frame mounting for fast, secure installations, delivering safer, more consistent electrical protection and improved maintenance planning.
Product Information
Extended Description
NZMB1-AF110-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip, 750-1250A delayed trip rating, Three-pole, 110A, 440 Vac, 25 kAIC, Distribution circuit protection, Rocker lever, 20-160A, Front frame clamp
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-AF110-NA
EAN
4015082815578
Product Length/Depth
88 in
Product Height
165.5 in
Product Width
90 in
Product Weight
2.46 lb
Compliances
Contact Manufacturer
Amperage Rating
110 A
Voltage rating
440 Vac
Trip Type
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
20-160A
Interrupt rating
25 kAIC
Connection
Front frame clamp
Number of poles
Three-pole
Trip rating
750-1250 A delayed
Feature: NZMB1-AF110-NA uses the NZM1 frame with a front-frame clamp for fast, secure mounting and simplified enclosure fit. Business impact: This reduces commissioning time, minimizes wiring mistakes, and lowers overall installation costs. Application: Ideal for distribution panels in factory environments where space is tight and modular protection is desirable. Context: The rugged construction supports long service life in demanding industrial settings. Feature: Thermal-magnetic trip with an adjustable OL Protector setting of 20–160 A. Business impact: Delivers precise overload protection while accommodating a wide mix of load profiles, which reduces nuisance trips during peak demand. Application: Well-suited for motor feeders and feeder circuits in automated lines where uptime is critical. Context: Coordination with upstream devices helps align protection zones and improve overall system reliability. Feature: 110 A rating at 440 Vac with a 25 kAIC interrupt rating. Business impact: Provides dependable protection against high fault currents in 3-phase systems, safeguarding cables and equipment. Application: Suitable for industrial distribution panels, switchgear, and control cabinets in manufacturing facilities. Context: The 25 kAIC rating supports fault current scenarios typical of mid-size plants and crane circuits. Feature: Three-pole design with rocker lever actuation and front frame mounting. Business impact: Improves usability during installation and maintenance, reducing operator error and downtime. Application: Panel installations in control rooms and machine areas where quick operation is essential. Context: Front-frame compatibility ensures straightforward retrofits and minimal panel modifications. Feature: Trip rating range includes 750–1250 A delayed protection. Business impact: Supports selective coordination with upstream devices, helping minimize outages while preserving essential loads. Application: Protection for large motors and high-load processes in manufacturing environments. Context: Delayed-trip behavior supports coordination with upstream protection schemes and upstream breakers.
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FAQs
The NZMB1-AF110-NA employs a front-frame clamp and NZM1 frame design, enabling quick, secure mounting in panel boards. When installing, verify panel compatibility with the NZM1 family and ensure the three-pole configuration aligns with the system’s 3-phase supply. Use provided rocker lever operation during commissioning and follow manufacturer guidance for enclosure clearances. For retrofit projects, confirm space and mounting tolerances to maintain proper isolation and safe operating practices.
Key specs include an amperage rating of 110 A, a voltage rating of 440 Vac, and an interrupt rating of 25 kAIC. It is a three-pole device within the NZMB1 family and uses the NZM1 frame with front-frame clamp connections. The trip type is T268, with an adjustable overload protection range of 20–160 A. These specifications support reliable protection for medium-size distribution panels in industrial settings.
Yes. The 110 A rating, 440 Vac operation, 25 kAIC interrupt rating, and 3-pole design suit distribution panels and motor feeders in manufacturing environments. Its adjustable overload setting (20–160 A) enables tailored protection for varying motor loads, while the rocker lever and front-frame mounting support quick maintenance and panel upgrades with minimal downtime.
Compliances field indicates that standards verification is required with the manufacturer. Regional certifications (for example CE or UL) may be pursued, but must be confirmed with Eaton or the authorized distributor. Always consult the datasheet and local regulatory requirements to ensure the device meets your market’s safety and performance standards.
The combination of a robust NZM1 frame, thermal-magnetic trip, and adjustable protection reduces nuisance trips and unplanned downtime, improving plant uptime. Quick mounting and easy operation via the rocker lever lower commissioning and servicing costs. Over time, reliable protection helps extend equipment life and stabilize energy usage, delivering a favorable return on investment in mid- to large-size industrial facilities.