Solid state relay SSR-10DA, 10A 3-32V DC to AC

Features

10A 3-32V DC to AC solid state relay (SSR) features high structural strength, good impact resistance, and strong shock resistance. The SSR offers a reliable switching the commercial and industrial loads, such as computer peripheral interface device, printing machine, molding machine, food machine, packaging machine, and so on.

• Built in RC absorption
• Photoelectric isolation
• SCR output
• LED indicator for operation status
• Removable protective cover for safety
• Panel mount
• Zero-crossing switch type

Specification

Note:

1. When the load is a resistive load, the maximum load current of the selected SSR should be 2~3 times greater than the actual load current;
   
2. When the load is an inductive load, the maximum load current of the selected SSR should be more than 7~8 times the actual load current.
   
3. When the maximum load current is higher than 10A, a heat sink must be installed to the solid state relay, or the SSR relay should be mounted on a metal base plate with heat dissipation effect, and the thermal grease is applied between them.

Heat Sink

Product Name	Heat Sink for SSR
Material	Aluminum
Dimension	Roof Size: 60 x 50mm Foot Size: 80 x 50mm Height: 50mm
Mounting Size	Mounting Hole Diameter: 3mm Threaded Hole Distance: 48mm
Weight	115g
Application	≤15A single phase SSR solid state relay

Dimension (Unit: mm)

Wiring Diagram

Tips: What are the differences in the use of zero-crossing SSR and random turn-on SSR?

The zero-crossing solid state relay is used as a switch on/off. In terms of the switch function, it is equivalent to an ordinary relay or contactor. The solid state relays we usually talk about are mostly zero-crossing type (zero-crossing SSRs can only be used as an on-off switch, not for voltage regulation).

Random turn-on SSRs are mainly used for chopper control. But the control signal of the random turn-on SSRs must be synchronized with the grid and rise with square signals ranging of 0º-180º to realize voltage regulation which, however, fails under the circumstance of a single voltage signal or 0-5V analog signal. From the voltage regulation function point of view, random turn-on SSRs are completely different from ordinary relays or contactors. It must be emphasized that devices used in the all kinds of voltage regulator module or solid state relays as an output contactor are SCRs, and achieve the purpose of voltage regulation relying on changing the operating angle of SCRs. Therefore, the output voltage waveforms are sine waves with unfilled corners (different from the full sine wave from the autotransformer output), and accordingly, there are higher harmonics and certain noises, and the grid has some pollution.