Eaton NZMB1-AF70-NA NZM molded case breaker - 25 kAIC
Part Number: NZMB1-AF70-NA
Quick Summary
NZMB1-AF70-NA is a molded case circuit breaker protecting distribution systems in industrial electrical panels. Choosing a device that meets high current demands while minimizing downtime and maintenance can be challenging. Key certifications for this class often include CE compliance, IP protection for enclosures, and SIL considerations for safety-critical lines. By combining a compact front-frame clamp design with a three-pole NZM1 frame and a 70 A rating, it delivers robust distribution protection, fast installation, and predictable maintenance costs—essential for manufacturers, panel builders, and systems integrators seeking reliable, long-term performance.
Product Information
Extended Description
NZMB1-AF70-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM1-frame, NZMB1, Thermal-magnetic trip type, 480-800A trip rating, Three-pole, 70A, 480 Vac, 25 kAIC, Distribution circuit protection, Rocker lever, 70-70A, Front frame clamp, 70-70A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB1-AF70-NA
EAN
4015082722098
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
Amperage Rating
70A
Voltage rating
480 Vac
Trip Type
T268
Circuit breaker type
NZMB1
Frame
NZM1
Class
Distribution circuit protection
Accessories
Rocker lever
Setting Range Ol Protector
70-70A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
70-70A
Number of poles
Three-pole
Trip rating
480-800 A
Feature: 70 A amperage rating with 480 Vac operation and a 25 kAIC short-circuit capacity. Business Impact: Delivers reliable distribution protection where fault currents peak, enabling faster disconnection and reduced downtime. Application: Ideal for motor circuits, machine controls, and panel boards in manufacturing environments. The three-pole configuration ensures balanced protection across phases in compact installations. Feature: Front-frame clamp terminals enable quick, secure wiring with consistent torque, improving installation speed and reducing wiring errors. Business Impact: Reduces field labor time and commissioning risk, which lowers total project cost. Application: Panel mounting in factory automation racks and distribution boards. Feature: Rocker lever for intuitive operation and a T268 thermal-magnetic trip for precise overload and short-circuit protection. Business Impact: Enhances safe maintenance practices and ensures compliance with safety standards. Application: Routine testing, fault isolation, and predictable protection in harsh environments. Feature: NZM1 frame compatibility and robust enclosure design support durable performance in demanding settings. Business Impact: Streamlines spare parts planning and improves MTBF through standardized components. Application: OEM panel builds and retrofit projects across process industries.
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FAQs
Install the NZMB1-AF70-NA using the front-frame clamp terminals for secure, straightforward wiring. Ensure the device is mounted on the NZM1 frame with proper alignment for a three-pole configuration. Tighten connections to the manufacturer’s torque specification and verify that the rocker lever operates smoothly for regular maintenance checks.
The unit is rated for 70 A at 480 Vac with a short-circuit breaking capacity of 25 kAIC. It uses a thermal-magnetic trip (T268) and is configured as a three-pole NZMB1 device. These ratings provide reliable protection for distribution circuits in demanding industrial environments.
Yes. This breaker is designed for 480 Vac distribution panels and supports high fault-current environments typical of industrial automation and processing lines. Its three-pole design and 25 kAIC rating help coordinate protection with upstream devices while maintaining panel safety and uptime.
The unit features front-frame clamp connection and a rocker lever for ease of operation. It belongs to the NZM1 frame family, ensuring compatibility with other NZM1-based components and simplifying panel integration, retrofits, and spare-parts planning in existing electrical installations.
Warranty follows Eaton’s policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. For technical support, refer to Eaton’s authorized service channels to assist with installation, calibration, and fault-nding in complex distribution systems.