PT370220

Turn On Voltage (Max):	165 VDC
Coil Resistance:	64.5 kOhms
Coil Power:	750 mW
Contact Material:	Silver Nickel (AgNi)
Operating Temperature:	-40°C ~ 70°C
Termination Style:	Plug In, Quick Connect - 0.110" (2.8mm)
Mounting Type:	Socketable
Features:	Mechanical Indicator, Test Button
Release Time:	10ms
Operate Time:	15ms
Turn Off Voltage (Min):	22 VDC
Series:	PT, SCHRACK
Switching Voltage:	400VAC - Max
Contact Rating (Current):	10A
Contact Form:	3PDT (3 Form C)
Coil Voltage:	220VDC
Coil Current:	3.4mA
Coil Type:	Non Latching
Relay Type:	General Purpose
Part Status:	Active
Packaging:	Bulk

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Power Relays, Over 2 Amps

PT370220 Application field and Working Principle

The PT370220 power relay is a type of relay designed for large power loads. It is capable of switching current loads above 2 amps. This type of relay is commonly used to control motors, solenoid valves, and other large power loads.

Applications

The PT370220 power relay can be used in many application fields, such as in industrial process control, automotive applications, motor control, and other applications where large loads need to be controlled.In industrial process control, the PT370220 can be used to control solenoids, pumps, and other motorized machinery. It can also be used to control large motors and provide precise control over the speed and direction of the motor. In automotive applications, the PT370220 can be used as an ignition switch, to actuate the starter motor and provide power to the headlights, or to control other large loads in the vehicle.

Working Principle

The PT370220 power relay is a form of contactor, which consists of two separate and distinct set of contacts that are connected by an internal control circuit. The two sets of contacts are closed by an applied voltage, which causes electrical current to flow through the contactor, energizing the internal control circuit and closing the contacts.The internal control circuit consists of a coil, which is energized when voltage is applied. When the contacts are closed by an applied voltage, current flows through the coil, which activates a light-emitting diode (LED). The LED emits light, which is detected by the contactor’s electronics. This activates the internal control circuit, which causes the contacts to close.When the voltage is removed, the LED stops emitting light, the contacts open, and the coil is de-energized. This prevents further activation of the internal control circuit, and the contacts remain open until a voltage is again applied.

Conclusion

The PT370220 power relay is designed for large power loads, and is capable of switching current loads above 2 amps. This type of relay is used in industrial process control, automotive applications, motor control, and other applications where large load needs to be controlled. The relay works by using a contactor, which has two sets of contacts that are closed by an applied voltage, and an internal control circuit that is activated when a voltage is applied.

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