Eaton / Cutler-Hammer HFDDC3150W Molded Case Circuit Breaker
- 150A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer HFDDC3150W - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Offering flexibility for custom installations, the Eaton HFDDC3150W is a 150A, 3-pole molded case circuit breaker. It is DC and photovoltaic rated, perfectly suited for industrial environments and solar power infrastructure. This Series C F-Frame breaker installs into Eaton panelboards and combiner boxes. Unlike standard models, it is supplied without terminals, allowing engineers to select specific lug kits. It provides a high interrupting capacity of 42 kAIC at 600VDC with LI fault protection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFDDC3150W |
| Series | HFDDC |
| Amperage | 150A |
| 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 |
| 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, Lug Kits |
|---|---|
| Accessories | Without Terminals |
| Standards | UL 489, UL 489B |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | DC Rated, Photovoltaic Rated |
Product FAQs
6 answersWhat type of enclosures or panels accept the HFDDC3150W breaker?
This F-frame breaker is designed to bolt onto the bus in Eaton Series C panelboards. It is also commonly installed in solar combiner boxes due to its DC ratings.
Are the thermal and magnetic trip settings adjustable on this model?
No, the HFDDC3150W features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection without adjustable dials.
What does the LI trip function indicate for this breaker?
The LI designation 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.
How is the HFDDC3150W secured during installation?
It features a bolt-on connection for panel mounting, meaning it must be bolted directly to the panelboard bus rather than snapping or plugging into place.
Can the HFDDC3150W be used for solar or photovoltaic applications?
Yes, it is rated for DC systems and is frequently used in solar combiner boxes and other photovoltaic applications requiring reliable DC circuit protection.
Is the HFDDC3150W compatible with legacy Cutler-Hammer systems?
Yes, Eaton acquired Cutler-Hammer, and this Series C F-frame breaker is fully compatible with existing Cutler-Hammer Series C panelboards requiring the HFDDC frame.
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