DR48D12R

Series:	DR
Packaging:	Bulk
Part Status:	Active
Mounting Type:	DIN Rail
Circuit:	SPST-NO (1 Form A)
Output Type:	AC
Voltage - Input:	4 ~ 32VDC
Voltage - Load:	48V ~ 600V
Load Current:	12A
Termination Style:	Screw Terminal
Package / Case:	Module
Supplier Device Package:	--

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＜h1＞DR48D12R Application Field and Working Principle＜/h1＞DR48D12R is a type of solid state relay (SSR). Solid state relays are electronic switches which have no moving parts, and they rely on a semi-conductor to perform a switching action. DR48D12R is a zero cross-over SSR which means that it only switches on when the applied voltage has a zero crossing. This is done to reduce EMI (electromagnetic interference). Application Field Solid state relays are commonly used in applications such as industrial process control, switch mode power supplies, motor control, and lighting control. They can be used to switch both AC or DC loads. DR48D12R is a particularly useful SSR for applications that require increased protection against EMI, since it has a zero cross-over switching feature. Working PrincipleDR48D12R utilizes an opto-isolator to provide galvanic isolation between the input and output circuits. The opto-isolator is composed of an LED and a phototransistor. The LED emits photons when it is energized, and these photons actuate the phototransistor. The phototransistor then turns on, and this allows current to flow through the relay. When the LED is switched off, the phototransistor is also switched off, and this eliminates current flow through the relay. The opto-isolator in the DR48D12R is designed in such a way that it only turns on when the input voltage has a zero crossing. This helps to reduce EMI by ensuring that the relay does not turn on when there is a sudden change in the input voltage. The DR48D12R also contains an output circuit which is made up of a TRIAC. The TRIAC is a semiconductor device which is capable of switching a load between two states. It can switch an AC load on and off, regardless of the phase of the AC voltage. The TRIAC is triggered by a gate signal which is produced by the opto-isolator. In summary, the DR48D12R is an SSR which utilizes an opto-isolator and a TRIAC to switch AC and DC loads. It’s a particularly useful SSR for applications which require greater protection against EMI, due to its zero cross-over switching feature.

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