Eaton / Cutler-HammerFS340040A
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Eaton / Cutler-Hammer FS320040A Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
FS320040A
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FS320040A
Quantity
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Eaton / Cutler-Hammer FS320040A - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Eaton / Cutler-Hammer FS320040A - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FS320040A-R |
| Series | FS |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
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Eaton / Cutler-Hammer FS320040A - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FS320040A-R |
| Series | FS |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
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Description
Designed for 240V commercial systems, the FS320040A provides dependable thermal-magnetic protection. This 3-pole, 40A unit mount breaker belongs to the proven Series C F-Frame family, built to handle continuous electrical loads safely. It mounts into compatible Eaton panelboards, switchboards, and motor control centers. As a legacy component, it is frequently replaced by the FD3040 for facility upgrades. Rated for 22 kAIC at 240VAC, this MCCB is equipped with a non-interchangeable trip unit.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FS320040A-R |
| Series | FS |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
8 answersWhat enclosures are compatible with the FS320040A?
This F-Frame breaker is designed for installation in Eaton Series C panelboards, switchboards, and motor control centers.
What is the difference between the FS320040A and the FD3040?
Both are 40A, 3-pole F-Frame breakers with identical physical dimensions. The FS320040A is rated for 240VAC, while the FD3040 is a common upgrade rated for up to 600VAC with a higher interrupting capacity.
How does the FS320040A mount into a panel?
It is a unit-mount breaker that bolts directly into the chassis of compatible Series C enclosures. It is not designed for DIN rail installation.
What do the LI trip functions indicate on this breaker?
LI stands for Long-Time and Instantaneous. The long-time function protects against sustained overloads, while the instantaneous function trips the breaker immediately during a short circuit.
Can the FS320040A be reverse fed?
Yes. Eaton Series C F-Frame thermal-magnetic circuit breakers are suitable for reverse feed applications.
Is the FS320040A HACR rated?
Yes. All Eaton Series C F-Frame circuit breakers carry an HACR rating, making them suitable for heating, air conditioning, and refrigeration equipment.
Can this breaker be used for HID lighting circuits?
Yes. Eaton F-Frame thermal-magnetic breakers rated between 10A and 50A, including this 40A model, are suitable for high-intensity discharge (HID) lighting applications.
Can I swap the trip unit on the FS320040A to change the amperage?
No. This breaker features a non-interchangeable trip unit, meaning the 40A thermal-magnetic trip mechanism is permanently fixed inside the frame.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- AOAnthony O.ReviewingEaton / Cutler-Hammer FS340020A - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/18/21Circuit Breaker Purchase
All circuit breakers were shipped in a timely manner with no mistakes. Thank You!