Eaton / Cutler-HammerFAZ-D30/3-NA
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Eaton / Cutler-Hammer FAZ-C40/3-NA Miniature Circuit Breaker
- 40A
- 3 Pole
- DIN Rail
Eaton / Cutler-Hammer
FAZ-C40/3-NA
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FAZ-C40/3-NA
Quantity
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Eaton / Cutler-Hammer FAZ-C40/3-NA - 40A 3 Pole Miniature Circuit Breaker
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Description
Built to handle three-phase industrial loads, this 40-amp miniature circuit breaker provides robust thermal-magnetic protection. The C-curve response profile makes it ideal for commercial applications with moderate inrush currents. Installation is straightforward as the component mounts securely onto standard DIN rail systems inside control panels. It also functions as a verified replacement for the legacy WMZT3C40. With a 10kAIC rating at 240VAC, it features a reliable trip-free mechanism.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FAZ-C40/3-NA |
| Series | FAZ-NA |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 96VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 96VDC |
| Frame Type | FAZ |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | DIN Rail Systems, Industrial Control Panels |
| Wire Gauge | 18-6 AWG |
| Max Wire | 6 AWG |
| Min Wire | 18 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | C |
| 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, CE, CSA, cULus, DNV, IEC, Lloyd's, UL, VDE |
| Temp Rating | -25C to 75C |
| Construction Features | Current Limiting, HACR Rated, Reverse Feed, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
6 answersIs the Eaton FAZ-C40/3-NA rated for branch circuit protection?
Yes, the FAZ-NA series is UL 489 listed, making it suitable for primary branch circuit protection in North American applications.
What does the C-curve trip characteristic mean for this breaker?
The C-curve design means the breaker trips magnetically at 5 to 10 times the rated current. This makes it ideal for loads with medium inrush currents, such as small transformers, pilot devices, and control circuits.
What are the terminal torque specifications for the FAZ-C40/3-NA?
The required tightening torque depends on the wire gauge used: 21 lb-in for 18 to 12 AWG, 25 lb-in for 10 to 8 AWG, and 36 lb-in for 6 AWG conductors.
Can the FAZ-C40/3-NA be reverse fed?
Yes, this miniature circuit breaker is reverse-feed capable, allowing line power to be supplied to either the top or bottom terminals.
Is the FAZ-C40/3-NA considered a current-limiting device?
Yes, Eaton FAZ-NA breakers are current-limiting. They are designed to interrupt fault currents within one-half cycle, which reduces peak let-through energy and provides superior protection for downstream components.
Can I substitute a UL 1077 supplementary protector for this UL 489 breaker?
No. While a UL 489 branch circuit breaker like the FAZ-C40/3-NA can be used in place of a UL 1077 device, UL 1077 supplementary protectors cannot legally replace a UL 489 breaker where branch circuit protection is required by code.
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