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DC Contactors

A DC contactor is an electrically controlled device designed to switch current on and off. DC motor contactors control current in DC circuits by closing and opening internal contacts. DC contactors control much lower voltages than AC circuits and offer the benefit of minimal arcing as the circuit opens and closes.

The main function of a DC motor contactor is simply to make and break the connection between the power source and the load. One side of contactor is fixed and the other is movable. Once energized, the generated electromagnetic force pulls the movable contact toward the stationary contact and the spring pulls the contactors apart once de-energized.

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DC Contactor Product Lines



MOST COMMON APPLICATIONS FOR DC MOTOR CONTACTORS

DC contactors are used in a variety of industrial and automotive applications where DC circuits need to be switched on and off. Some of the most common applications for DC contactors include:

- Electric vehicles: DC contactors are used in electric vehicles to control the flow of electricity between the battery and the motor.
- Battery chargers: DC contactors are used in battery chargers to switch the charging current on and off.
- Solar inverters: DC contactors are used in solar inverters to switch the DC voltage from the solar panels on and off.
- Industrial machinery: DC contactors are used in industrial machinery to control the flow of electricity to motors, solenoids, and other components.
- Uninterruptible power supplies (UPS): DC contactors are used in UPS systems to switch the DC voltage from the battery to the inverter during a power outage.
- Welding machines: DC contactors are used in welding machines to switch the welding current on and off.
- Battery management systems: DC contactors are used in battery management systems to switch the battery current on and off, and to isolate the battery from the rest of the system when necessary.

Overall, DC contactors are used in any application where high current DC circuits need to be switched on and off.

 


Featured Products

7001 Series DC Contactor

7001 Series

Electrical Rating: 40 amp
Number of Main Contacts: 1-3 Poles 
Operating Voltage (Thermal Rating): 500VDC (600VDC)

5DP Series DC Contactor

5DP3A Series

Number of Main Contacts: 1-3 Poles
Operating Voltage (Thermal Rating): 500VDC (600VDC)
NO Continuous Contact Rating: 110A

5DP7 Series DC Contactor

5DP8 Series

Electrical Rating: 535 amp
Number of Main Contacts: 1-3 Poles
Operating Voltage (Thermal Rating): 500VDC (600VDC)


Frequently Asked Questions About DC Contactors

Here are the answers to the frequently asked questions about DC motor contactors:

What is a DC contactor? A DC contactor is an electrical switch used to control a DC circuit. It is typically used to switch high current loads on and off in a variety of industrial and automotive applications.

What is the difference between AC and DC contactors? The main difference between AC and DC contactors is the type of current they are designed to switch. AC contactors are used for AC circuits, while DC contactors are used for DC circuits. AC contactors are usually designed for higher voltage and lower current applications, while DC motor contactors are designed for lower voltage and higher current applications.

Can you use DC on an AC contactor? No, you cannot use DC on an AC contactor. AC contactors are specifically designed for AC circuits and are not suitable for DC circuits. Attempting to use an AC contactor for DC applications can cause damage to the contactor and the equipment.

What contactors are used for switching DC loads? DC motor contactors are specifically designed for switching DC loads. They are commonly used in applications such as electric vehicles, battery chargers, solar inverters, and other industrial applications where DC circuits need to be switched on and off.

These contactors are designed to handle high current loads and are available in a variety of sizes and voltage ratings.

 


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