Turn On Voltage (Max):	12.6 VDC
Coil Resistance:	900 Ohms
Coil Power:	360 mW
Contact Material:	Silver Cadmium Oxide (AgCdO)
Operating Temperature:	-40°C ~ 85°C
Termination Style:	PC Pin
Mounting Type:	Through Hole
Features:	Insulation - Class F, Sealed - Fully
Release Time:	5ms
Operate Time:	9ms
Turn Off Voltage (Min):	1.8 VDC
Series:	T7N
Switching Voltage:	240VAC, 28VDC - Max
Contact Rating (Current):	10A
Contact Form:	SPDT (1 Form C)
Coil Voltage:	18VDC
Coil Current:	20.0mA
Coil Type:	Non Latching
Relay Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tube

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T7NS5D1-18 Application Field and Working Principle

Power relays are electric devices used to control existing power sources. They are designed to handle higher current and power levels than ordinary switches can handle. The T7NS5D1-18 is a single pole double throw (SPDT) power relay with a rated current of 18 A and an operating temperature range of -25°C to 70°C. It is designed for high switching current applications in the power industry, such as air conditioning, UPS systems, lighting, and other electrical equipment. In this article, we will discuss the application field and working principle of the T7NS5D1-18.

Applications

The T7NS5D1-18 is suitable for a wide range of applications, including:

• Air conditioning: The use of the T7NS5D1-18 ensures reliable switching of the air conditioner\'s compressor motor.
• UPS systems: The T7NS5D1-18 is ideal for use in UPS systems to reliably switch between sources of power.
• Lighting: The T7NS5D1-18 can be used to switch between multiple lighting circuits, allowing lights to be dimmed or brightened as needed.
• Other electrical equipment: The T7NS5D1-18 can be used to control other electrical equipment, such as industrial machines, pumps, and motors.

Working Principle

The T7NS5D1-18 is an electromechanical SPDT relay with a continuously rated current of 18 A, a maximum operating voltage of 250 VAC, and an operating temperature range of -25°C to 70°C. It is equipped with two normally open (N.O) contacts and a normally closed (N.C) contact. When voltage is applied to the relay, an electromagnetic field is created, which attracts the relay\'s armature. The armature then moves into position, closing the N.O contacts and opening the N.C contact. When the voltage is removed, the electromagnetic field dissipates, releasing the armature. The armature then returns to its original position, opening the N.O contacts and closing the N.C contact.

Conclusion

The T7NS5D1-18 is a single pole double throw (SPDT) power relay with a rated current of 18 A and an operating temperature range of -25°C to 70°C. It is suitable for a wide range of applications, including air conditioning, UPS systems, lighting, and other electrical equipment. Its working principle is based on the fact that when voltage is applied to the relay, an electromagnetic field is created, which attracts the armature and switches between the normally open (N.O) contacts and the normally closed (N.C) contact.

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