Eaton NZMB1-S5-CNA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB1-S5-CNA
Quick Summary
NZMB1-S5-CNA molded case circuit breaker protects motors in industrial automation and equipment panels. Many users struggle with nuisance trips and downtime caused by inadequate protection coordination. Compliances should be verified with the manufacturer, but this device aligns with typical industrial practices and warranty terms. Key features include magnetic-only trip, three-pole NZMB1 frame, and a 25 kAIC short-circuit rating, delivering motor protection without overload release and fast fault interruption. This combination supports safer, more efficient machine control in manufacturing, packaging, and process lines while enabling easier panel integration and predictable maintenance. Its magnetic operation minimizes maintenance while supporting predictable downtime metrics for plant managers.
Product Information
Extended Description
NZMB1-S5-CNA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Magnetic only trip, 504-882A, Three-pole, 5A, 480 Vac, 25 kAIC, Motor protection without overload release, Magnetic switch off, 18.5 kW at 230 Vac, 30 kW at 400 Vac
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-S5-CNA
EAN
4015081027583
Product Length/Depth
2.68 in
Product Height
5.71 in
Product Width
3.54 in
Product Weight
3 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
5 A
Voltage rating
480 Vac
Trip Type
Magnetic only
Circuit breaker type
NZMB1
Frame
NZM1
Class
Motor protection without overload release
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Rated operational current
30 kW at 400 Vac 18.5 kW at 230 Vac
Number of poles
Three-pole
Trip rating
504-882 A
Feature magnetic-only trip delivers rapid interruption on fault currents up to 25 kAIC, reducing arc energy and protecting downstream motor drives. Business Impact minimizes downtime and equipment wear, leading to higher line throughput in packaging or material handling applications. Application suitable for three-phase motors in conveyor belts, pumps, and fans where fast fault isolation is critical. Feature NZM1 frame compatibility and three-pole construction enable compact installation in crowded control panels. Business Impact simplifies panel design, reduces wiring complexity, and supports straightforward field retrofits. Application ideal for motor protection without overload release, enabling coordinated protection strategies with separate overload devices. Feature 25 kAIC short-circuit rating and 504-882 A trip range provide robust system valuation for plant protection and reliability. Application helps meet uptime targets in process lines and manufacturing cells. Feature warranty terms and Eaton support offer long-term service confidence and lower lifecycle risk for engineering teams.
Get a Quick Quote for a Eaton NZMB1-S5-CNA
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton NZMB1-S5-CNA?
Enquire Now
FAQs
NZMB1-S5-CNA is a three-pole unit built on the NZM1 frame with a compact footprint (2.68 in depth, 5.71 in height, 3.54 in width). It mounts in standard 3-phase panels and accepts typical busbar configurations. Ensure proper clearance for magnetic operation and verify panel space to accommodate the 3-pole assembly for straightforward wiring and reliable fault interruption.
The breaker provides a 5 A amperage rating, 480 Vac voltage rating, and a magnetic-only trip type with a short-circuit breaking capacity of 25 kAIC. It is a three-pole device in the NZMB1 family, capable of handling up to 25 kA fault currents with a trip range of 504-882 A, and offers motor protection without overload release.
Yes. This unit is specifically described as motor protection without overload release, meaning it interrupts motor faults magnetically without relying on an integrated overload release. This simplifies protection coordination when separate overload relays are used and supports reliable motor protection in demanding manufacturing environments.
Compliances field indicates verification with the manufacturer. For industrial deployments, confirm CE marking, IP ratings, and any SIL requirements with Eaton or the local electrical engineering team, and consult the product datasheet for current compliance status and installation guidance.
Warranty terms specify one year from installation or eighteen months from shipment, whichever occurs first. ROI benefits come from reduced downtime due to fast magnetic interruption, simplified panel wiring, and lower maintenance needs when integrated with separate overload protection, leading to improved equipment availability and predictable maintenance cycles.