Eaton / Cutler-Hammer HFDDC3070L Molded Case Circuit Breaker
- 70A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer HFDDC3070L - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed specifically for renewable energy systems, the Eaton HFDDC3070L functions as a 70A, 3-pole MCCB equipped with PVGard technology. This F-Frame breaker delivers exceptional long-time and instantaneous protection for commercial solar arrays. It integrates easily into Eaton Series C panelboards and solar combiner boxes. Boasting a 42kAIC rating at 600VAC alongside 250/600VDC capabilities, it provides the high interrupting capacity required for modern photovoltaic installations.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFDDC3070L |
| Series | HFDDC |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 600VAC, 42kA @ 250VDC, 42kA @ 600VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Solar Combiner Boxes |
| Wire Gauge | 14 AWG - 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Terminals |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | UL, UL 489 |
| Temp Rating | 40C |
| Construction Features | DC Rated, Photovoltaic Rated, HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersIs the Eaton HFDDC3070L suitable for solar photovoltaic (PV) applications?
Yes, the HFDDC3070L is part of the Eaton PVGuard line. It is specifically designed for solar combiner boxes and other direct current systems, featuring a maximum rating of 600VDC.
What does the L suffix in the HFDDC3070L catalog number indicate?
The L indicates that the breaker is supplied complete with factory-installed line and load side lug terminals. Eaton breakers in this series with a W suffix are shipped without terminals.
How should the 3-pole HFDDC3070L be wired for 600VDC applications?
For high-voltage DC applications, Eaton requires wiring multiple poles in series to safely interrupt the direct current arc. Always refer to the manufacturer wiring diagrams for grounded or ungrounded DC systems to ensure proper pole configuration.
What wire sizes are accepted by the standard lugs on the HFDDC3070L?
The factory-installed line and load lugs accept 14 AWG to 1/0 AWG wire. Ensure you apply the correct torque as specified on the breaker label during installation to maintain a secure connection.
Which panelboards are compatible with the HFDDC3070L breaker?
This F-frame breaker is designed for use in Eaton Series C panelboards, switchboards, and specialized solar combiner boxes that accept Series C F-frame dimensions.
Does the HFDDC3070L provide ground fault protection?
No, this breaker features a standard thermal-magnetic trip unit with fixed Long-Time and Instantaneous (LI) functions. It does not include built-in ground fault or electronic trip capabilities.
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