T90S5D42-12

Turn On Voltage (Max):	9 VDC
Coil Resistance:	155 Ohms
Coil Power:	900 mW
Contact Material:	Silver Cadmium Oxide (AgCdO)
Operating Temperature:	-55°C ~ 85°C
Termination Style:	PC Pin
Mounting Type:	Through Hole
Features:	Insulation - Class F, Sealed - Fully
Release Time:	15ms
Operate Time:	15ms
Turn Off Voltage (Min):	1.2 VDC
Series:	T90
Switching Voltage:	240VAC, 28VDC - Max
Contact Rating (Current):	20A
Contact Form:	SPDT (1 Form C)
Coil Voltage:	12VDC
Coil Current:	77.0mA
Coil Type:	Non Latching
Relay Type:	General Purpose
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Power Relays, Over 2 Amps

Power relays are electrical devices used to control the flow of power in electrical circuits. A power relay is typically made up of an electromagnet and a switch. When an electric current is applied to the electromagnet, it creates a magnetic field which causes the switch to open or close, thereby interrupting or allowing power flow. The T90S5D42-12 is one such power relay, and is designed to switch high currents of up to 2 amps.

T90S5D42-12 Application Field

The T90S5D42-12 is suitable for applications with commonly used AC or DC switching and is especially suited for applications where the currents are consistently high. Common applications for power relays, such as the T90S5D42-12, include controlling the current of motors, solenoids, and relay coils. It is also used to control the flow of off-peak electric power from an electrical utility and can be used to switch large equipment, such as air conditioners, electric pumps, and HVAC systems, on and off.

T90S5D42-12 Working Principle

The T90S5D42-12 is an AC or DC operated power relay. It has a sealed coil which is energized when an electrical current is passed through it, creating a magnetic field that actuates the switch. The T90S5D42-12 can be operated by AC or DC voltage, but for consistent use, the coil must be energized on an alternating current basis. The AC current is typically provided by a transformer, while the DC current is provided by a battery.The relay switch can be Single Pole Single Throw (SPST) or Single Pole Double Throw (SPDT), depending on the user\'s requirements. The power switching is completely isolated from the coil for safety purposes, meaning that there is no direct contact between the coil and the switch.In summary, the T90S5D42-12 is a heavy duty power relay that is designed for high current applications that require AC or DC voltage. It is suitable for use in controlling motors, solenoids, and relay coils, as well as switching large equipment such as air conditioners and pumps on and off. The T90S5D42-12 works by energizing its sealed coil, creating a magnetic field that actuates the SPST or SPDT switch, allowing power to flow or be interrupted as desired.

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