Eaton NZMB1-S26-CNA Molded Case Breaker - Magnetic Trip
Part Number: NZMB1-S26-CNA
Quick Summary
The NZMB1-S26-CNA molded case circuit breaker provides reliable magnetic trip protection for motor circuits in industrial equipment. Installers often grapple with compact form factors that still meet high short-circuit ratings and fast fault isolation. Compliance details are to be confirmed with the manufacturer, but motor-protection MCCBs in this class commonly carry CE, UL, and CSA listings, with enclosure-dependent IP ratings. This solution supports motor protection without overload release, with a magnetic trip and 25 kAIC interrupt capacity for dependable disconnection. Leveraging the NZM1 frame and a three-pole design, it fits compact control panels while delivering predictable protection for modern automation lines. Its robust construction and standard accessories streamline procurement, installation, and ongoing maintenance for engineering teams.
Product Information
Extended Description
NZMB1-S26-CNA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Magnetic only trip, 264-462A, Three-pole, 26A, 480 Vac, 25 kAIC, Motor protection without overload release, Magnetic switch off, 7.5 kW at 230 Vac, 15 kW at 400 Vac
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-S26-CNA
EAN
4015081028627
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
26 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
7.5 kW at 230 Vac 15 kW at 400 Vac
Number of poles
Three-pole
Trip rating
264-462 A
Compact circuit-breakers and switch-disconnectors up to 1600 A
Eaton Specification Sheet - NZMB1-S26-CNA
Feature: Magnetic-only trip provides immediate fault clearance, reducing arc flash exposure and equipment damage. Business Impact: Rapid disconnection minimizes downtime and protects connected motors from collateral damage during fault events. Application: Motor circuits in packaging lines, pumps, and conveyors where fast, decisive protection matters. Feature: 26 A amperage rating at 480 Vac enables compact protection for medium-sized motors. Business Impact: Supports tight panel layouts and reduced conductor sizing, cutting installation costs. Application: General industrial motor control panels and light to medium-duty drives. Feature: NZM1 frame, three-pole construction ensures uniform protection across phases. Business Impact: Simplifies replacement and upgrades, speeds up commissioning, and maintains consistent trip characteristics. Application: Upgrades in existing NZM-based MCCBs and new build-outs in motor control centers. Feature: 7.5 kW at 230 Vac and 15 kW at 400 Vac operating power with 25 kAIC interrupt capacity. Business Impact: Delivers reliable motor starting protection and robust fault interruption for demanding loads. Application: Industrial drives, conveyors, and process equipment. Feature: Warranty and service terms (Eaton policy requires confirmation of warranty window). Business Impact: Reduces risk for procurement teams and ensures service support aligns with project timelines. Application: Enterprise-wide motor protection programs and panel assemblies. Feature: Magnetic switch off provides definite isolation when tripped. Business Impact: Enhances safety and simplifies panel troubleshooting. Application: Motor control panels and switchgear assemblies in harsh industrial environments.
Get a Quick Quote for a Eaton NZMB1-S26-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-S26-CNA?
Enquire Now
FAQs
The NZMB1-S26-CNA is designed around Eaton's NZM1 frame and is a three-pole device, ensuring straightforward substitution in NZM1-based panels. It supports standard mounting patterns, wiring schemes, and protective characteristics consistent with NZM1 MCCBs, simplifying upgrades and replacements in existing motor control centers.
This unit provides a 26 A rating at 480 Vac, with a magnetic-only trip type and a short-circuit rating of 25 kAIC. It is suited for motor protection without overload release, delivering fast disconnection for motors up to approximately 15 kW at 400 Vac or 7.5 kW at 230 Vac, depending on drive conditions.
Yes. The magnetic-only trip and 25 kAIC capability make it ideal for protecting medium-to-large motors in conveyors, pumps, and processing lines where rapid fault clearance is critical. Its motor-protection-without-overload-release classification is specifically aimed at controlled motor protection within automation schemes.
Plan for a three-pole, NZM1 frame installation with 480 Vac wiring. Ensure panel space accommodates roughly 3.54 in width, 5.71 in height, and 2.68 in depth, and verify enclosure IP ratings and compliance with your regional standards through the manufacturer. Use magnetic trip behavior to ensure fast fault disconnection in fault conditions.
Warranty terms align with Eaton policy 25-000, typically one year from installation or eighteen months from shipment, whichever occurs first. For project sponsorship and procurement, confirm exact terms with Eaton at the time of purchase and reference the 25-000 policy to ensure coverage during commissioning and ongoing operation.