SR4D4048

Contact Rating (Current):	8A
Coil Resistance:	2.88 kOhms
Coil Power:	800 mW
Contact Material:	Silver Tin Oxide (AgSnO)
Operating Temperature:	-25°C ~ 70°C
Termination Style:	PC Pin
Mounting Type:	Through Hole
Features:	--
Turn Off Voltage (Min):	4.8 VDC
Turn On Voltage (Max):	36 VDC
Switching Voltage:	400VAC - Max
Series:	SR4, SCHRACK
Contact Form:	4PST-NO/NC (2 Form A, 2 Form B)
Coil Voltage:	48VDC
Coil Current:	16.7mA
Coil Type:	Non Latching
Relay Type:	Safety
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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Power Relays, Over 2 Amps Application Field and Working Principle of SR4D4048

The SR4D4048 is a power relay that operates over 2 amps. It is a four-pin relay designed with a built-in coil that increases its current capacity. It is considered a heavy duty relay and is suitable for use in industrial and commercial applications.

Features

The SR4D4048 power relay has several features that make it an ideal choice for a number of applications. It has a wide voltage range from 6 to 220 volts AC or DC. It is also designed with a wide temperature range of -40°C to +85°C. The power relay can handle up to 2 amps of load current and up to 8 amps of surge current. It is a hermetically sealed relay that is dust and water resistant, making it ideal for harsh environments. Additionally, the SR4D4048 has a 600V dielectric strength between the coil and contacts, ensuring reliable performance.

Application fields

The SR4D4048 power relay is suitable for a wide range of industrial and commercial applications. It can be used in a variety of control and monitoring systems, such as motor and transformer control, automotive, marine, HVAC systems, and fire and security systems. The power relay can be used in power distribution systems, material handling and conveying machinery, lighting systems, and other commercial and industrial equipment.

Working Principles

The SR4D4048 power relay works on electromagnetic principles. It consists of a coil and a set of contacts. The coil is connected to a voltage source (either AC or DC), and when the voltage is applied to the coil, it generates a magnetic field that attracts the armature. The armature is connected to a set of contacts, which close or open depending on the current flow. When the voltage is applied to the coil, the contact set is closed, allowing the current to flow through the circuit. When the voltage is removed, the current flow is interrupted, resulting in the contacts being opened again.The SR4D4048 power relay is a four-pin relay design and has several benefits over traditional single-pin designs. It has a built-in coil that increases its current capacity, allowing it to handle more load current and surge current than a single-pin design. Additionally, it has a wide temperature range and dust and water resistance, making it ideal for harsh environments.

Conclusion

The SR4D4048 power relay is a heavy-duty, four-pin relay designed for industrial and commercial applications. It has a wide voltage range, a wide temperature range, and dust and water resistance. It is suitable for a variety of control and monitoring systems, and is suitable for power distribution systems and other commercial and industrial equipment. The SR4D4048 operates on electromagnetic principles and has a built-in coil that increases its current capacity. It is an ideal choice for applications requiring a reliable, heavy-duty power relay.

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