Features
100A 3-phase solid state relay (SSR) can control 24-480V AC load with 70-280V AC with high structural strength, good impact resistance, and strong shock resistance. The SSR relay 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
Model |
ATO-SYTH10048ZA2 |
Input |
Control voltage range |
70-280V AC |
Max. input current |
20mA |
Must operate voltage |
70V AC |
Must release voltage |
50V AC |
Output |
Load voltage range |
24-480V AC |
Peak voltage |
800V AC |
Load current |
100A |
Maximum off-state leakage current |
8mA |
Maximum off-state time |
10mS |
Maximum on-state voltage drop |
1.5V |
General |
Type |
AC to AC, 3 phase |
Dimension L – W – H (mm) |
105х74.8х33 |
Weight |
500g |
Dielectric strength (input to output) |
4000V |
Dielectric strength (input, output to the base) |
2500V |
Operating temperature |
-20℃~ 80℃ |
Mount |
Panel |
Certification |
CE |
Note:
* When the 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.
* When the load current is 40A or more, a fan cooling radiator or water cooling radiator must be equipped.
Heat Sink
Product Name |
Heat sink for 3 phase SSR |
 |
Material |
Aluminum alloy |
Dimension (L*W*H) |
150*125*135mm |
Mounting Size |
Mounting Hole Diameter: 3mm Groove Distance: 84mm |
Weight |
2.1kg |
Application |
≤150A 3 phase solid state relay |
Dimensions (Unit: mm)

Wiring Diagram

Tips: SSR relay-ordinary type of Triac output and enhanced type of unidirectional SCR anti-parallel output
In the case of inductive load, when the solid state relay is turned off by the on-state, a large voltage rise rate dv/dt (commutation dv/dt) will be generated at both ends of the triac due to inconsistent phase of current and voltage. The value exceeding the triac's commutation dv/dt (typically 10V/μs) will lead to delayed turn-off, or even failure. However, the unidirectional triac is unipolar and only affected by satic voltage rising rate dv/dt (typical value 100V/μs). The commutation dv/dt of ordinary type SSR formed by only triac has been greatly improved compared to enhanced SSR composed of two unidirectional SCR in anti-parallel, so the enhanced SSR should be selected in inductive or capacitive load field.