3Phase Solid State Relay, AC control AC, 3P4810AA/3P4825AA/3P4840AA

Current.0.5A~400A

Voltage:12V~680V

Small General outline

Vacuum Weld Techinics

Led indicator showing *ON* or *OFF*

Protect Panel

lEC standard

Input & output type could chose 

DC/AC AC/AC DC/DC

Solid State Relay(SSR) is industrial control appliances which use power semiconductor devices for main control part, compare with traditional magnetic contact industrial controllers, it is more high-powered, intelligent.digital, systematic and green development.

according switch mode SSR have zero-cross and random type. When the input control signal, random type conduction immediately, zero cross type need load voltage turn to zero region just can conduction, Revocation of the control signal,all can cut off when less than maintenance current. zero cross type may cause the maximum half-cycle delay, but reduces the impact of the load and radio frequency interference, is the ideal switching devices.Random type fast response,suitable for dimmer,thermostats resistive loads and some inductive load applications.

When the SSR turn off, if in the phase current and voltage have different will have a large rise rate (dv/dt) on the triac, such as dv/dt higher than Triac standatrd (300V/us), will result in delay shutdown even failure. use anti-parallel thyristor's SSR(powerful type) will been greatly improved at dv'dt(dv/ dt is 500V/us). Therefore, in the field of capacitive load or inductive load,suggest the use powerful type SSR, Zenli's SSR are all powerful type.Solid-state voltage regulator consists of thyristor switching circuit,resistance-capacitance phase shifting circuit,lag circuit and over-voltage absorption circuit.The use of only one external potentiometer can be used to achieve AC power regulation.In many occasions can replace the heavy contact voltage lighting power supply,voltage,temperature,brightness,speed and other analog adjustment.

RC: Built-in resistance capacity absorption circuit

MOV: External shunt metal oxide varistor.

Notes 

1.Strictly prohibit for load short circuit,Can use fast fuse.

2.Ling time working current can't over 70% of the nominal value.

3.Heatsink temperature can'tover75℃.

4.Use at inductive load area, add varistor for protect is better