Eaton / Cutler-Hammer FAZ-B25/1-NA-SP Miniature Circuit Breaker
- 25A
- 1 Pole
- DIN Rail
Quantity
Eaton / Cutler-Hammer FAZ-B25/1-NA-SP - 25A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
The FAZ-B25/1-NA-SP is part of Eaton's UL 489 rated miniature circuit breaker lineup. Engineered for commercial and industrial applications, it provides dependable overcurrent protection for branch circuits and control panels. This single-pole breaker installs easily onto standard DIN rail systems. It features box lug terminals that accept 18-6 AWG wire and is fully compatible with Eaton's FAZ series accessories. Rated for 14 kAIC at 277VAC, the unit utilizes a B-curve trip profile.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | FAZ-NA |
| Amperage | 25A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 277VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 14kA @ 277VAC, 10kA @ 48VDC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | DIN Rail Systems, Industrial Control Panels |
| Wire Gauge | 18-6 AWG (1 wire), 18-10 AWG (2 wires) |
| Max Wire | 6 AWG |
| Min Wire | 18 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | B |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Lockout Attachment, Busbar System |
|---|---|
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | ABS, CCC, CE, CSA, cULus, DNV, IEC, Lloyd's, RoHS, UL, VDE |
| Temp Rating | -40C to 75C |
| Construction Features | Current Limiting, HACR Rated, Reverse Feed, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
6 answersWhat does the B curve trip characteristic mean for the FAZ-B25/1-NA-SP?
The B curve magnetic trip point operates at 3 to 5 times the rated current. This makes it ideal for applications with low inrush currents, such as resistive loads, PLC I/O points, and convenience receptacles.
Is the FAZ-B25/1-NA-SP rated for branch circuit protection?
Yes, the FAZ-NA series is UL 489 listed for branch circuit protection. It can be used in feeder and branch circuit applications, unlike UL 1077 supplementary protectors.
What are the terminal tightening torque specifications for the FAZ-B25/1-NA-SP?
The required torque depends on the wire size. Use 21 lb-in for 18 to 12 AWG, 25 lb-in for 10 to 8 AWG, and 36 lb-in for 6 AWG conductors.
Is the Eaton FAZ-B25/1-NA-SP a current limiting circuit breaker?
Yes, FAZ-NA devices are current limiting. They interrupt fault currents within one half cycle, reducing peak let-through current and energy to provide superior protection for downstream components.
Which auxiliary contacts are compatible with the FAZ-B25/1-NA-SP?
This breaker accepts Eaton field-mountable accessories, including the Z-IHK-NA auxiliary contact and the Z-NHK alarm and auxiliary switch. No tools are required for mounting these side-attached accessories.
Can I terminate two wires in the box lugs of the FAZ-B25/1-NA-SP?
Yes, the box lug terminals can accept a single wire from 18 to 6 AWG, or two wires from 18 to 10 AWG.
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