Solid-state DC relay RSCD


The main purpose of solid–state relays (TTR) is the switching of an electrical circuit. Like a conventional electromagnetic relay, TTRS allow a small control signal to turn on or off a much larger load current. The absence of moving parts allows you to significantly increase the speed of operation of the relay, and also negates the mechanical wear of internal components. Along with the obvious differences between solid-state and electromagnetic relays, there are other differences caused by the design of the device. For example, an electromagnetic relay has the ability to switch both AC and DC circuits. A solid-state AC relay will not be able to control a DC load. As well as vice versa. Solid-state relays for controlling the DC load, it is unacceptable to use for controlling AC circuits.

Solid-state DC relays, as it has already become clear, are used only for switching DC loads. The key advantage of using a DC TTR is that it can withstand the high starting currents characteristic of inductive loads. DC TTRS are mainly used as switching components for controlling more powerful loads, for example, contactors. An important parameter of the DC TTR is also the period of the control signal. Its value must be at least 5 times greater than the sum of the on-time and off-time of the relay.

The RSCD series DC relays are designed for switching DC loads with voltage up to 60V with a load of 1A (relay RSCD06D1) and 3A (relay RSCD06D3). The relays have a thin body with a thickness of 5.2mm. The design of the relays allows using both printed and mounted mounting for their installation.

Overall dimensions of the relay

Gabaritnye razmery rele RSCD

For additional convenience and more adaptability of installation, special pads can be used - SNC05-E-AR for mounting on a DIN rail, and SNC05-P1 for mounting on a printed circuit board.

Overall dimensions of the pads and the switching scheme

RSCD. Gabaritnye razmery kolodok i sxema kommutaciiRSCD. Gabaritnye razmery kolodok i sxema kommutacii

Typical RSCD relay connection diagram

Tipovaya sxema podklyucheniya rele RSCDTipovaya sxema podklyucheniya rele RSCD

Main technical characteristics of the RSCD relay

Control voltage, VDC4…28
Opening voltage, VDC4
Cut-off voltage, VDC1
Range of control currents, mA6…20
Load voltage range, VDC5…603…60
Single peak voltage, VDC100
Nominal load current, A0,002…10,002…3
Max. power-on time, ms1
Max. shutdown time, ms1
Single peak current (10ms), A1630
Safety margin for peak load, %40-60