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Products Location:Home>>Products>>Sensors>>Solid State Relay
Solid State Relay View

Load current range: AC 5A、15A、25A、40A、50A、80A、100A
Load voltage range: AC 24~660V AC
Control voltage: DC 3~32V、Control current: 6mA~25 mA
Input constant current control,Zero Crossing turn-on .Zero current turn-off
Adop technic of glass passivated SCR square piece(>50A),good in dispersing heat.
Dual triac or SCR strong output or single triac or SCR reversal parallel connection strong output
With LED display to detect the operating of devices.
Widely used in various automatic fieds like chemical fibre machinery,temperature controller.
Electrc cooker,rubber machinery,fountain control,numerical control machinery……ect.
Max display 99999   (average value, if need true value, please mention when ordering)
Range of frequency 40-200Hz (for AC only
Measuring mode Dual slope A/D conversion
Overflow indication “0000” flashes
Polarity display Only “-”display (for DC meter only)
Display Red LED (14.2mmH)
Power supply 90-260 AC  50/60 Hz
Control output Relay: NO, NC   Capacity AC 250V/3A, DC 30V/3A Cos=1
Setting range 99999   Rate can be set freely
Weight  Abt. 300g
SSR-5A AC 5A Max.Load Current AC 5A、15A、25A、40A、50A、80A、100A
SSR-10A AC 15A Load Voltage AC 24~380V
SSR-25A AC 25A Isolated Voltage ≥2000V AC 1min
SSR-40A AC 40A Insulation Voltage ≥2000V AC 1min
SSR-50A AC 50A Control Voltage DC 3~32V
SSR-80A AC 80A Control Current 6mA~25 mA
SSR-100A AC 100A Turn-On Voltage ≤1.3V
  Off-set leakage ≤1.3 mA
Off state dv/dt 300V/us
On-Off Time 100ms
Frequency Range 47/63Hz
Status Indicator Red LED
Ambient Temperature -40~80℃
Net Weight 250g
SSR-3-15A AC 15A Max.Load Current 15A、25A、40A、50A、80A、100A
SSR-3-25A AC 25A Insulation Voltage ≥2000V AC 1min
SSR-3-40A AC 40A Control Voltage DC 3~32V
SSR-3-50A AC 50A Control Current 12mA~20 mA
SSR-3-80A AC 80A Turn-On Voltage ≤1.5V
SSR-3-100A AC 100A Off-set leakage ≤1.0 mA
  Off state dv/dt 300V/us
On-Off Time 100ms
Frequency Range 47/63Hz
Status Indicator Red LED
Ambient Temperature -40~80℃
1.SSR is current drove,when used in logic electrocircuit,try to drive by low voltage +5VDC,to make sure enough load capacity and zero voltage.
2.Multiple SSR input terminals can be connected in Series or in parallel,to make sure each SSR high voltage contact current≥6mA、contact voltage≥4V,viz.in parallel connection,driving current≥the sum of each input current;In series connection,driving voltage≥the sum of each turn-on voltage(suppose driving voltage=4V)
3.RC absorb loop and off leak current:the Purpose of RC absorb loop is to absorb the surge voltage and increase dv/dt index, But SSR internal RC loop can cause about 1~2mA off leak current.According to experiences,SSR < 10A doesn’influence load up to 50W(e.g.motor).Besides,in application of huge inductance load,SSR can be protected by connecting RC absorb loop in Parallel with SSR output terminals.
In case SSR is used in power extend application,RC absorb loop may cause misaction when power on,therefore,when ordering,customers should indicate the application of SSR,RC absorb loop can be eliminated.
4.Over current、over voltage protection methods:over load and load short circuit is the main reason of damage to SSR .To protect from damage,limit fuse or air switch can be configured with,and magnetism fuse adopted for low capacity SSR. Over voltage protection :in addition to RC absorb loop,metal oxidation resistance(MOV) can be connected in parallel.The size of MOV is decided by absorb power,and the thickness of MOV decide the protected voltage value.In normal condition, SSR of 220V can use at 430~600V,SSR of 220V can use resistance at 750~850V.
5.SSR radiator:when SSR is at ON estate,max.heat is calculated by real operating current×1.2W/A,for example,long term working at 50A equals to heat produced by iron of 60W.When design for dispersing heat,ambient termperature、circulation conditions(such as natural cooling、fan cooling)and SSR installation density should be taken into account.SSR of 2A~5A needn’t radiator;SSR < 10A to work long time only need to install flat metal piece with good dispersing heat;SSR>10A need to configure related radiator,but should be cooled by fan when>60℃
6.SSR seletion for load surge current:Most load may cause surge current at the instant of turning on,surge current is another key Reason of damage to SSR when heat is not dispersed in time.Therefore,to select SSR,current range is better to reserve some space.Load like incandescent lamp and electric cooker thread can cause10 times surge current for lasting 1cycle,this is smilar to SSR anti-surge current feature.To selecting strong SSR,current should be equal to 1.8 times of rated current of electric cooker thread and 1.5times of rated current of incandescent lamp.AC electric magnet and general relay may cause 4~5times surge current;AC motor may cause 5~7 surge current when turning on for lasting10 cycles.For normal SSR to control motor, SSR current range should be 7 times of motor rated current.
7.Cautions for testing SSR:in normal condition,AC SSR has a internal absorb loop and there is a leak current about 0.5~2mA, Therefore,when SSR input terminals without control voltage,to measure output terminals by voltage meter,meter still displays voltage. Correct testing method is to connect a lamp up to 15W,connect voltage meter to lamp.

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