Eaton NZMB1-M80 Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-M80
Quick Summary
NZMB1-M80 molded case circuit breaker protects motors in industrial control panels, delivering reliable overload and short‑circuit protection. Designers often wrestle with choosing devices that balance trip sensitivity, space, and maintenance downtime. Certification considerations typically include CE marking, IP enclosure protection, and SIL safety integrity—verify with Eaton for NZMB1‑M80 specifics. This unit uses the NZM1 frame and offers three‑pole protection with an 80 A rating and a 440 Vac supply, supporting scalable motor control. In practice, customers gain improved uptime, streamlined panel layouts, and predictable protection coordination across varied motor loads.
Product Information
Extended Description
NZMB1-M80 Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 800-1300A trip rating, Three-pole, 80A, 440 Vac, 25 kAIC, Motor protection, Magnetic switch off, 30 kW at 230 Vac, 55 kW at 400 Vac
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-M80
EAN
4015082657130
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
2.45 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
Special features
Magnetic switch off
Amperage Rating
80 A
Voltage rating
440 Vac
Trip Type
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Motor protection
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Rated operational current
55 kW at 400 Vac 30 kW at 230 Vac
Number of poles
Three-pole
Trip rating
800-1300 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB1-M80
Feature → Business Impact → Application: The NZMB1-M80 sits on the NZM1 frame as a three-pole device rated at 80 A with 440 Vac and 25 kAIC. This compact footprint simplifies panel design while delivering robust motor protection, reducing fault-induced downtime in automated lines and pumps. Application: ideal for machine control panels and drive systems where space is at a premium and reliability is essential. Feature → Business Impact → Application: Thermal-magnetic (T268) trip type with a 800–1300 A trip rating and a magnetic switch-off provides fast fault isolation and coordinated protection for motors, conveyors, and processing equipment. Application: suitable where precise coordination minimizes nuisance tripping and maintenance costs. Feature → Business Impact → Application: 30 kW at 230 Vac and 55 kW at 400 Vac indicate strong motor-starting capability, enabling efficient drive integration and energy management. Application: supports scalable motor control for mid‑size industrial machines. Feature → Business Impact → Application: Dimensions 2.68 in depth, 5.71 in height, 3.54 in width and weight 2.45 lb offer easy integration and retrofit compatibility in existing electrical panels. Application: eases installation, reduces engineering time, and supports standardized protection across multi‑panel architectures. Feature → Business Impact → Application: Warranty and compliance details (Eaton policy and manufacturer verification) provide clear ownership and risk management, helping procurement teams plan maintenance cycles and asset management. Application: aligns with quality programs and service agreements while maintaining regulatory alignment across global sites.
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FAQs
The NZMB1-M80 is designed around the NZM1 frame, offering three-pole protection for motor circuits and straightforward mounting within panels built to the NZM1 footprint. Its 80 A rating and 440 Vac operation align with common industrial control architectures, enabling seamless substitution or retrofit in existing installations without major panel redesigns.
Key specs include an 80 A current rating, 440 Vac voltage rating, 25 kAIC short‑circuit breaking capacity, and a thermal-magnetic trip type (T268) with a trip range of 800–1300 A. It is a three-pole device within the NZMB1 family, dedicated to motor protection with magnetic switch-off for rapid fault clearance.
Yes. The NZMB1-M80 is explicitly designed for motor protection in 440 Vac systems, offering 80 A protection, three-pole configuration, and a 25 kAIC interrupt rating. Its motor-protection class and trip characteristics support reliable start-up and fault isolation in standard industrial drives and conveyors.
Compliances are to be confirmed with the manufacturer. Eaton notes compliance with regional requirements, and typical motor-protection devices in this family support common standards such as CE and relevant IP ratings where applicable. Verify the exact certifications for your market and installation with Eaton before procurement.
The unit’s robust thermal-magnetic protection, compact footprint, and reliable short-circuit interruption contribute to reduced maintenance downtime and longer mean time between failures in motor circuits. With a 30 kW at 230 Vac and 55 kW at 400 Vac performance, it supports efficient energy management and predictable operational costs in automation environments.