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EATON HFD Series Molded Case Switches, F Frame

Eaton HFD Series moulded case switches protect electrical systems from overcurrent and short-circuit events. They feature up to 100 kAIC interrupt capacity and are ideal for applications requiring high-current switching capabilities.

Filter
StyleModelMPNPrice
A
HFD2100K
HFD2100K£898.79
A
HFD2100KL
HFD2100KL£902.47
A
HFD2100KW
HFD2100KW£892.88
A
HFD2150K
HFD2150K£1,649.68
A
HFD2150KL
HFD2150KL£1,659.26
A
HFD2225K
HFD2225K£1,649.68
A
HFD2225KL
HFD2225KL£1,659.26
B
HFD3100K
HFD3100K-
RFQ
B
HFD3100KL
HFD3100KL-
RFQ
B
HFD3100KW
HFD3100KW£1,346.60
B
HFD3150K
HFD3150K£2,504.32
B
HFD3150KL
HFD3150KL-
RFQ
B
HFD3150KW
HFD3150KW£2,435.18
B
HFD3225K
HFD3225K£2,504.32
B
HFD3225KL
HFD3225KL£2,514.75
B
HFD3225KW
HFD3225KW-
RFQ
C
HFD4100K
HFD4100K-
RFQ
C
HFD4100KW
HFD4100KW£1,790.86
C
HFD4150K
HFD4150K£3,189.06
C
HFD4150KW
HFD4150KW-
RFQ
C
HFD4225K
HFD4225K-
RFQ
C
HFD4225KW
HFD4225KW£3,183.86

Working Mechanism

  • These HFD Series moulded case switches consist of circuit breakers that incorporate both fixed thermal and magnetic trips.

  • Fixed Thermal Trips

    • Fixed thermal trips are based on the heat generated by the current passing through the circuit.
    • The trip unit contains a bimetallic strip sensitive to temperature changes.
    • As the current increases, the bimetallic strip heats up and bends, triggering the breaker to trip.

    Fixed Magnetic Trips

    • Fixed magnetic trips use the strength of the magnetic field created by the current passing through the circuit.
    • The trip unit contains an electromagnet sensitive to changes in magnetic field strength.
    • As the current increases, the magnetic field strength increases and when it reaches a certain level, it triggers the breaker to trip.

Standards and Approvals

  • UL

Frequently Asked Questions

What is the pole configuration of these switches?

Eaton offers these HFD Series switches in two, three & four-pole variants.

How to ensure the optimum working of these switches?

Eaton switches have a PUSH-TO-TRIP button to check their tripping function. This button should be used periodically to exercise the operating mechanism of the switches.

How to reset these switches?

Turn the circuit breaker handle to the extreme Off position to reset the switch. If the switch's thermal unit has tripped, wait till it cools down before turning the handle.

How do I select the right thermal-magnetic circuit breaker for my application?

The selection of a moulded case switch depends on the specific requirements of the electrical system, including the voltage & current ratings, trip curve characteristics and any other special features or requirements.

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