Not a lot! If you look for 'Thyristor' or Triac devices, you will see anything from a milliamp upto some tens of milliamps. Once the device is on, the gate drive may be removed, effectivley no holding current. (note that for AC circuits, the gate will need to be re-applied at the start of every half cycle!. For DC, it just stays on.
All solid state relays are relays, but not all relays are solid state relays. There are three basic kinds of (protective) relays I know of: electromechanical (rely on induced voltages and currents to spin disks or energize solenoids), solid state (built with solid state parts - basically prerequisites to microprocessors), and microprocessor based relays (fancy computers).
The solid state component that can be used as a switch to turn current on or off is a thyristor.
HOLDING CURRENT: The minimum value of current that must be there to provide a path between anode and cathode to flow anode current and thus maintain a thyristor in the on state.0 LATCHING CURRENT: The minimum anode current required to maintain a thyristor in on-state immediately after a thyristor has be triggered on. IL>IHrate of flow of charge is known as current
a relay that detects the amperage the motor is drawing when the motor dwaws too much to drops out the coil voltage to shut down motor and prevent damage
It is an electronic switching device which controls larger load currents from small currents inside them.
not sure
current relay are using for over current low state & high state.but potential relay are related to voltage.
Latching current is the minimum amount of current required to maintain the thyristor in on-state immediately after a thyristor is turned on..and Holding current is a minimum current that is required to maintain the thyristor in on-state not allowing it to turn off.Alternative AnswerIf you are referring to a relay or contactor, when the relay is de-energised, there is a break in the magnetic circuit, so the magnetic circuit has an airgap which makes it have a high reluctance. When the relay is energised, the magnetic circuit causes the armature to close, removing the airgap and reducing the value of reluctance. So, when you first energise the relay, there must be a greater magnetomotive to overcome the higher reluctance. When the relay is closed, a lower magnetomotive force will be sufficient to overcome the lower reluctance and maintain the relay closed.
No.If you are looking of a relay that will allow 240V, many suppliers sell a SSR that will handle up to 280V AC. Most are triggered by 3-32v dc.Just google: solid state relay OR solid state contactor
They can be used as a kind of safety switch to allow a circuit with a small current through to switch on a circuit that will hve a larger current flowing through it.
Not without other modifications. The circuits used to turn the solid state relay on will not be suitable for turning a contactor on.
Air Compressor solid state relay
All solid state relays are relays, but not all relays are solid state relays. There are three basic kinds of (protective) relays I know of: electromechanical (rely on induced voltages and currents to spin disks or energize solenoids), solid state (built with solid state parts - basically prerequisites to microprocessors), and microprocessor based relays (fancy computers).
The WAC relay is a solid state relay usually used to control the air conditioning compressor clutch.
it is the minimum current required to maintain the SCR in conducting state.
The solid state component that can be used as a switch to turn current on or off is a thyristor.
ionic