Eaton / Cutler-Hammer FAZ-B40/1-SP Supplementary Protector
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Core Specs
See full specsEaton / Cutler-Hammer FAZ-B40/1-SP - 40A 1 Pole Supplementary Protector
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Description
Built for overcurrent protection, the Eaton FAZ-B40/1-SP supplementary protector is rated 40A at 277VAC and 48VDC, with a 15kAIC interrupting rating. This single-pole, single-phase breaker belongs to the FAZ series and mounts on DIN rail. Its thermal magnetic trip provides long-time and instantaneous protection. A toggle actuator operates the breaker, which has standard terminal connections, a 1 in width and IEC, CSA and UL approvals.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FAZ-B40/1-SP |
| Series | FAZ |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 277VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 15kA @ 240VAC, 5kA @ 277VAC |
| Frame Type | FAZ |
|---|---|
| Terminal Type | Box Lugs |
| Max Wire | 6 AWG |
| Min Wire | 18 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Available Options | Auxiliary Switch, Busbar System, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | CSA C22.2 No. 235, IEC 60947-2, UL 1077 |
| Approval | ABS, CE, CSA, IEC, UL, VDE |
| Temp Rating | -40C to 75C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, Trip-Free Mechanism |
Product FAQs
7 answersHow should I use the 40A rating when selecting the Eaton FAZ-B40/1-SP?
The Eaton FAZ-B40/1-SP is a 40A supplementary protector for overcurrent protection. Select it by coordinating that current rating with the load requirements and conductor ampacity.
What voltage ratings should I check before choosing this breaker?
The breaker is rated for 277VAC and 48VDC. Use the rating for the circuit's AC or DC supply type, and keep the circuit voltage within that rating.
How does the 15kAIC interrupting rating affect selection?
The 15kAIC interrupting rating describes the breaker's ability to interrupt fault current. Compare it with the available fault current at the installation point to ensure the interrupting rating is sufficient.
How does the thermal-magnetic trip respond to overcurrent?
The thermal-magnetic trip combines long-time and instantaneous protection. The thermal element responds to sustained overloads, while the magnetic element responds rapidly to high fault current.
What does the single-pole arrangement mean for circuit planning?
This is a single-pole breaker for a single-phase circuit, so it interrupts one conductor. Plan the circuit around that single-pole arrangement; the breaker has no neutral connection.
How is this breaker mounted?
The breaker uses DIN rail mounting. Plan for a DIN rail installation rather than a different mounting method.
How should I apply the AWG 18 minimum wire size?
AWG 18 is the minimum terminal wire size. Use that terminal minimum alongside the circuit's conductor ampacity requirements when selecting wire; the terminal minimum alone does not determine the conductor size needed for the load.
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Reviews
Review summary
Customers rate this product 2.0 out of 5 based on 2 reviews.
- VVictorVerified ReviewerReviewingEaton / Cutler-Hammer FAZ-C50/3 - 50A 3 Pole Supplementary ProtectorI do not recommend this productRated 2 out of 5 stars1/12/26NO DIMENSIONS!
Once again not one single dimension listed. Once again I can't consider buying because you provided NO PHYSICAL DIMENSIONS
- VGVictor G.Verified ReviewerReviewingEaton / Cutler-Hammer FAZ-C50/3 - 50A 3 Pole Supplementary ProtectorI do not recommend this productRated 2 out of 5 stars1/12/26NO PHYSICAL DIMENSIONS
Where are the physical dimensions? Can't buy it without them.