Solid state relay, 3 phase, load current 120A, AC control, 70-280V AC input, 24-480V AC output, LED indicator, zero-crossing switch, built-in RC. SSR features optical isolation, no electric spark, no noise, no contact, high switching speed, high reliability and good performance.
3 Phase SSR-120AA Specification
|On-state voltage drop
|Off-state leakage current
||2500V AC (1min)
||500МΩ with 500V DC
||Need fan for cooling or water cooling
Solid State Relay Dimensions
Three Phase SSR Wiring Diagram
Tips: SSRs used in heating industry
At present, in the plastic machinery industry, SSRs are usually used to control electric coils. Because the temperature control accuracy of the electric coil in the plastic machine is about ±1℃ and the control frequency of the electric coil is very high, the use of contactors can not usually achieve control effects. The use of SSRs not only solves the problem of contactor’s contact bonding, but also improves accuracy of temperature control and overall performance of the plastic machine. Therefore, SSRs are almost used to control heating coils by the entire plastic machinery industry by virtue of their own advantages.