Eaton NZMB2-AF35-BT-NA Molded Case Circuit Breaker - 25 kAIC
Part Number: NZMB2-AF35-BT-NA
Quick Summary
Eaton NZMB2-AF35-BT-NA is a molded case circuit breaker for distribution protection in industrial power panels. Engineers face the challenge of balancing reliable protection with minimal nuisance trips, especially during fault events. This device combines fixed thermal protection with adjustable magnetic trip, delivering 25 kAIC short-circuit capacity at 440 Vac in a compact NZM2 frame. Note: The data package lists compliance as 'Contact Manufacturer' and does not specify CE, UL, or IP ratings; verify current certifications with Eaton. By leveraging a front-frame clamp and compatible NZM2 components, it enables fast installation, straightforward field wiring, and scalable protection across panel layouts, delivering cost savings through reduced downtime and easier maintenance.
Product Information
Extended Description
NZMB2-AF35-BT-NA Eaton: Eaton Series NZM complete molded case circuit breaker, NZM2-frame, NZMB2, Fixed thermal, adjustable magnetic trip, Three-pole, 35A, 440 Vac, 25 kAIC, Box, Distribution circuit protection, 35-35A, 320-400A delayed, Front frame clamp, 35-35A
Product Name
Eaton Series NZM complete molded case circuit breaker
Catalog Number
NZMB2-AF35-BT-NA
EAN
4015081072811
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
35 A
Voltage rating
440 Vac
Trip Type
T185
Circuit breaker type
NZMB2
Terminals
Box
Frame
NZM2
Class
Distribution circuit protection
Accessories
Rocker lever, motor drive
Adjustment range short-circuit release
320-400A delayed
Setting Range Ol Protector
35-35A
Short-circuit breaking capacity
25 kAIC
Interrupt rating
25 kAIC
Connection
Front frame clamp
Overload range
35-35A
Number of poles
Three-pole
Feature → Business Impact → Application: The NZMB2-AF35-BT-NA is a three-pole, 35 A molded case circuit breaker in the NZM2 frame, enabling reliable circuit protection for distribution panels and MCCs while preserving a compact footprint. This combination reduces panel real estate needs and improves maintainability in space-constrained industrial environments. Application: distribution boards, motor control centers, and panel assemblies benefit from compact integration and straightforward wiring. Feature → Business Impact → Application: With a 25 kAIC short-circuit breaking capacity at 440 Vac, the device withstands high fault currents, minimizing downtime and equipment damage during surges. Application: large switchgear and heavy-load sections in manufacturing lines and processing plants gain enhanced reliability. Feature → Business Impact → Application: Trip Type T185 and fixed thermal with adjustable magnetic release enable precise protection coordination, reducing nuisance trips while safeguarding motors and drives. Application: MCCs and programmable automation panels require dependable coordination for start-up and fault isolation. Feature → Business Impact → Application: Front frame clamp terminals simplify mounting and secure connections, shortening installation time and improving vibration resistance in rugged environments. Application: new builds and retrofit projects in control panels and power distribution assemblies. Feature → Business Impact → Application: Accessories such as rocker lever and motor drive support improve operational ergonomics and drive integration, reducing operator steps and enabling faster commissioning. Application: automation panels and motor drive integrations. Feature → Business Impact → Application: The adjustable short-circuit release range (320-400A delayed) and setting range (35-35A) provide selective coordination with upstream devices, enabling optimized protection curves for varying load profiles. Application: protection schemes in dynamic manufacturing lines and energy management installations.
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FAQs
NZMB2-AF35-BT-NA is designed for front-frame mounting in distribution panels that use the NZM2 frame. It features front-frame clamp connections and a box terminal arrangement suitable for standard panel busbars, simplifying retrofit and new installations without needing separate adaptors or rewiring.
The device provides a 35 A amperage rating, 440 Vac voltage rating, and a 25 kAIC short-circuit breaking capacity. It uses a fixed thermal trip with an adjustable magnetic trip (Trip Type T185) to balance overload protection with rapid fault clearance for motor and power distribution circuits.
Yes. With a three-pole configuration, compatible NZM2 frame, and adjustable magnetic trip, the breaker is well-suited for motor control centers and distribution panels where precise protection and coordinated trip performance are required. Accessories like rocker lever and motor drive options further enhance installation and operation in MCCs.
The provided data lists compliance as 'Contact Manufacturer' and does not specify CE, UL, or IP ratings. For regulatory approval, verify current certifications with Eaton to confirm applicable standards for your region and application, especially in environments with stringent safety or environmental requirements.
The product includes a standard one-year warranty (with an 18-month window from shipment) and reverse logistics support per Eaton policy. Its compact NZM2 framing, front-frame clamp, and readily available accessories simplify maintenance, reduce downtime during replacements, and can lower total cost of ownership in high-uptime production lines.