Eaton / Cutler-Hammer FAZ-B20/1-NA-SP Miniature Circuit Breaker
- 20A
- 1 Pole
- DIN Rail
Quantity
Eaton / Cutler-Hammer FAZ-B20/1-NA-SP - 20A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial applications, this 20A single-pole miniature circuit breaker provides reliable current-limiting protection. It installs into standard DIN rail systems and serves as an exact replacement for the discontinued WMZT1B20 model. Featuring a B-curve trip profile, it is optimized for highly sensitive loads where instantaneous tripping is required. The unit is UL 489 listed for branch circuit protection and includes a visual status indicator.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | FAZ-NA |
| Amperage | 20A |
| 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, Busbar System, Lockout Attachment |
|---|---|
| Accessories | Single Package |
| 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, SWD Rated, Trip-Free Mechanism |
Product FAQs
6 answersWhat does the "NA" in the FAZ-B20/1-NA-SP part number indicate?
The "NA" designates that this breaker is UL 489 listed for branch circuit protection in North America, rather than just UL 1077 recognized for supplementary protection.
What is the trip characteristic of the B curve on this breaker?
The B curve is designed to trip between 3 and 5 times the rated current. This makes it ideal for resistive loads or sensitive control circuits with low inrush currents.
What does the "-SP" suffix mean on this Eaton circuit breaker?
The "-SP" suffix indicates that the breaker is packaged as a single unit (Single Package) rather than in bulk quantities.
Can the terminals on this breaker accept two wires?
Yes, the box lug terminals can accept a single wire from 18 to 6 AWG, or two wires from 18 to 10 AWG.
What size DIN rail is required for installation?
This breaker mounts on standard 35mm DIN rail commonly used in industrial control panels.
What does the LI trip function indicate on this breaker?
The LI designation means the thermal magnetic trip unit provides both Long-Time overload protection and Instantaneous short circuit protection.
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