RM8390C4

Turn On Voltage (Max):	18 VDC
Coil Resistance:	475 Ohms
Coil Power:	1.2 W
Contact Material:	Silver Cadmium Oxide (AgCdO)
Operating Temperature:	-45°C ~ 65°C
Termination Style:	Quick Connect - 0.250" (6.3mm)
Mounting Type:	DIN Rail
Features:	Diode, Mechanical Indicator, Test Button
Release Time:	10ms
Operate Time:	15ms
Turn Off Voltage (Min):	2.4 VDC
Series:	RM, SCHRACK
Switching Voltage:	400VAC - Max
Contact Rating (Current):	25A
Contact Form:	DPDT (2 Form C)
Coil Voltage:	24VDC
Coil Current:	50.0mA
Coil Type:	Non Latching
Relay Type:	General Purpose
Part Status:	Active
Packaging:	Tray

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Power Relays, Over 2 Amps

The RM8390C4 is a powerful relay suited for applications that require more than 2 Amps of current to be controlled. It is rated for up to 16 Amps with a maximum voltage of 500 ACV and 600 DCV. The RM8390C4 offers the ability to switch in extremely constrained spaces, as its dimensions are 7.5mm x 36.5mm x 28.5mm.

Applications

The RM8390C4 is suitable for a variety of applications, such as motor control, lighting control, security systems, process control, and appliance control. It is also designed for medium to heavy-duty industrial applications, which require precise and reliable switching of power.

Construction

The RM8390C4 features a solid-state construction, with an internal high-speed switching circuit utilizing the latest MOSFET technology. The enclosure is constructed out of flame retardant ABS plastic, protecting the circuitry from dangerous environmental factors. Moreover, the contact assembly is water and dust-tight, allowing it to be used in outdoor applications with no issue.

Mounting and Wiring

The RM8390C4 can be easily mounted in a variety of ways, with holes for screw, panel, and rail-mounting. It can also be mounted on the wall and with various other mounting methods since it comes with the necessary hardware for secure mounting. Wiring is just as easy, with line power connected directly to the input terminals, and load power connected to the output terminals.

Contact Configuration

Form C: Form C contact configuration is the default for the RM8390C4, and is also the most common. It has normally open and normally closed contacts, as well as a common contact that carries the load current. When the relay is energized, the common contact will open and the normally open contact will close. This contact configuration is ideal for applications that require a switch to open or close.Form A: Form A contact configuration has only one set of normally open contacts. The RM8390C4 can also be wired to this configuration, however it requires a slight modification to the wiring, as the coil must be wired to ground. This contact configuration is beneficial for applications where a single switch is required to be operated by the relay.

Working Principle

The working principle of the RM8390C4 is relatively simple. When a voltage is applied to the coil, the internal electronics inside the relay detect it, and then close the circuit, sending current through the contacts and creating a circuit. These contacts perform the switching operation, allowing the current to be routed to different destinations, depending on the contact configuration. At the same time, the current passing through the contacts generates a magnetic field, which keeps the contacts in a closed condition, ensuring reliable switching operation.

Conclusion

The RM8390C4 is a powerful and reliable relay suited for applications using more than 2 Amps of current. It offers excellent switching reliability and precise operation in a flame-retardant package. The RM8390C4 can be mounted in a variety of ways and is capable of operating in a wide range of environments due to its solid-state construction. It is available in either Form C or Form A contact configurations, depending on the specific application requirements. Its working principle is easy to understand, and it requires very little maintenance and upkeep, making it an ideal relay for any type of medium to heavy-duty application.

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