Eaton / Cutler-Hammer HFDDC3125L Molded Case Circuit Breaker
- 125A
- 3 Pole
- Panel Mount
Eaton / Cutler-Hammer
HFDDC3125L
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFDDC3125L
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Eaton / Cutler-Hammer HFDDC3125L - 125A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Series C family, the Eaton HFDDC3125L is a 125A, 3-pole molded case circuit breaker built for industrial and photovoltaic environments. It carries specialized DC and PVGard ratings for solar combiner boxes. This F-Frame breaker installs into Eaton Series C panelboards. It comes equipped with line and load lug terminals for immediate wire termination, accepting 4 AWG to 4/0 AWG conductors.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFDDC3125L |
| Series | HFDDC |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 600VAC, 42kA @ 250VDC, 42kA @ 600VDC |
| Frame Type | HFDDC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Solar Combiner Boxes |
| Wire Gauge | 4 AWG - 4/0 AWG |
| Max Wire | 4/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Terminals |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | UL, UL 489 |
| Temp Rating | 40C |
| Construction Features | Photovoltaic Rated, 50C Ambient Calibration, Reverse Feed, Non-Interchangeable Trip, High Interrupting Capacity |
Product FAQs
6 answersCan I install the HFDDC3125L in a standard Eaton residential load center?
No. This is an F-frame molded case circuit breaker designed specifically for commercial and industrial Eaton Series C panelboards or solar combiner boxes. It will not fit in standard residential load centers.
What does the "DC" in the HFDDC3125L catalog number signify?
The "DC" designation indicates that this breaker is specifically tested and rated for direct current applications up to 600VDC. This makes it ideal for photovoltaic systems, solar combiner boxes, and other high-voltage DC environments.
Are the trip settings on the HFDDC3125L adjustable?
No. This breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous protection settings are factory set and cannot be adjusted in the field.
Do I need to purchase separate terminals for the HFDDC3125L?
No, the breaker comes standard with feed-thru line and load lugs that accept 4 AWG to 4/0 AWG wire. The "L" at the end of the catalog number indicates these lugs are factory installed.
Can the HFDDC3125L be reverse fed?
Yes. Eaton Series C F-frame thermal magnetic circuit breakers, including the HFDDC series, are suitable for reverse feed applications.
Is the HFDDC3125L suitable for high fault current applications?
Yes, it provides a high interrupting capacity of 42kAIC. It maintains this 42kAIC rating across both 600VAC and high-voltage 600VDC systems, making it highly versatile for demanding commercial and solar installations.
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