Eaton NZMB2-S80-BT-CNA NZM MCCB - Magnetic Trip, 25 kAIC
Part Number: NZMB2-S80-BT-CNA
Quick Summary
NZMB2-S80-BT-CNA is an Eaton molded case circuit breaker designed to protect motor circuits in industrial control panels. This device addresses the common challenge of selecting a protective device that combines reliable magnetic tripping with a compact footprint and straightforward front-frame mounting. In practice, buyers seek CE marking, IP ratings, and, where required, SIL approvals; verify the exact certifications with the manufacturer for this SKU. For panel builders, the NZM2 frame and box terminals offer easy wiring, fast installation, and predictable long-term performance, supporting motor protection without overload release.
Product Information
Extended Description
NZMB2-S80-BT-CNA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Magnetic only trip, Three-pole, 80A, 440 Vac, 25 kAIC, Box, Motor protection without overload release, 640-1120A delayed, Front frame clamp
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-S80-BT-CNA
EAN
4015081073283
Product Length/Depth
4.05 in
Product Height
7.24 in
Product Width
4.13 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
80 A
Voltage rating
440 Vac
Trip Type
Magnetic only
Circuit breaker type
NZMB2
Terminals
Box
Frame
NZM2
Class
Motor protection without overload release
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
640-1120A delayed
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Number of poles
Three-pole
Power Xpert Protection Manager x64
Eaton Specification Sheet - NZMB2-S80-BT-CNA
Intelligent power starts with accurate, actionable data
Feature: Magnetic-only trip provides instantaneous protection for motor faults, reducing exposure to nuisance trips. Business Impact: Minimizes unplanned downtime and wear on motors, improving line uptime and maintenance predictability. Application: Suitable for motor circuits in manufacturing lines where fast fault clearance is critical. Feature: 80 A amperage rating with 440 Vac operating voltage. Business Impact: Aligns with typical motor starter loads in medium-size equipment, enabling precise protection without oversizing. Application: Panel assemblies demanding reliable protection for standard NEMA/IEC motor loads. Feature: Short-circuit rating of 25 kAIC and front frame clamp terminals. Business Impact: High fault current resilience supports safer and quicker fault isolation, reducing arc exposure during maintenance. Application: Enclosures requiring front-access wiring and robust mounting. Feature: NZM2 frame, box terminals, and three-pole construction. Business Impact: Compact footprint, straightforward installation, and coordinated protection for multi-phase motors. Application: Machine builders and process lines with compact control panels. Feature: Motor protection without overload release with accessories including rocker lever and motor drive. Business Impact: Simplifies installation and commissioning, enabling clear motor protection coordination. Application: OEM equipment where motor protection is provided without independent overload devices. Feature: 640-1120A delayed adjustment range for short-circuit release. Business Impact: Flexible coordination with upstream protection and motor starting characteristics, reducing nuisance trips. Application: Systems requiring configurable protection thresholds for varied loads. Industry Context: The product supports straightforward compatibility with front-frame mounting and NZM2 accessories, aligning with common industrial control architectures. By combining robust protection with a compact profile, it helps engineers meet both safety and efficiency targets while controlling total cost of ownership over the product lifecycle.
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FAQs
Installation follows standard front-frame mounting using the NZM2 frame. The device features front frame clamp terminals for easy wiring, and comes with optional accessories like a rocker lever and motor drive to streamline mounting. Verify enclosure clearance and torque specifications, then wire per the schematic in the specification sheet to ensure proper motor protection without overload release.
Yes. NZMB2-S80-BT-CNA is designed for the NZM2 frame and uses front-frame clamp connections, facilitating straightforward installation in standard motor control panels. This compatibility reduces mounting time and ensures consistent protection coordination with other NZM2 components.
Key specs include an 80 A amperage rating, 440 Vac voltage rating, and a magnetic-only trip type with a 25 kAIC short-circuit capacity. The unit is a three-pole circuit breaker with box terminals, part of the NZMB2 family, and supports motor protection without overload release. The device also includes an adjustable short-circuit release range (640-1120 A delayed).
Compliances are coordinated via the manufacturer. Typical checks should confirm CE marking and region-specific approvals (UL/CSA where applicable) and any IP or SIL certifications required for your application. Always request the latest published approvals from Eaton for this SKU to ensure regulatory alignment in your facility.
The NZMB2-S80-BT-CNA reduces downtime through reliable magnetic protection with a compact form factor, simplifying wiring and panel layouts. Its 25 kAIC rating supports higher fault tolerance, while front-frame mounting speeds installation. The warranty terms and Eaton’s support ecosystem help minimize lifecycle maintenance costs and extend motor protection reliability.