60A 70-280V AC to 24-480V 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
||Control voltage range
|Max. input current
|Must operate voltage
|Must release voltage
||Load voltage range
|Maximum load current
|Maximum off-state leakage current
|Maximum off-state time
|Maximum on-state voltage drop
||AC to AC, single phase
|Dimension L – W – H (mm)
|Dielectric strength (input to output)
|Dielectric strength (input, output to the base)
- 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;
- 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.
- 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.
Dimension (Unit: mm)
Tips: AC solid state relays vs DC solid state relays
Based on the type of load power supply, SSRs can be divided into AC Solid State Relays (AC-SSRs) and DC Solid State Relays (DC-SSRs). AC-SSRs use a bidirectional thyristor as a switching device to turn on or off the AC load power supply. According to the type of control trigger, AC-SSR can be divided into zero-crossing and random turn-on. Zero-crossing AC-SSRs switch on when AC power supply goes through approx. zero voltage after control signals input. Therefore, their interference is small. The random turn-on AC-SSRs switch on or off in any phase of the AC power supply, so there may be more interference the moment they turn on.
Compared with AC-SSR, DC-SSR has no zero-crossing control circuit and does not need to install a absorption circuit, and its switching devices generally use high-power switching transistor, except which, they have the same working principles. When DC-SSR is used, it should be noted that:
- In the case of inductive load, such as DC solenoid valves or electromagnets, a diode should be set in parallel at both ends of the load. Meanwhile, its current should be equal to the operating current, and its voltage should be 4 times greater than the operating voltage.
- During its operation, try to put SSR close to the load, and its output lead should meet the needs of the load current.
- Its filtering electrolytic capacitor should be large enough when the used power supply is obtained by AC brownout rectification.