discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 38.50
freight :USD$7.00,(Postal parcel)
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Industry application model,Exquisite workmanship,win through high quality
Comtech special offer isolated voltage 0-5V power regulator SN4840-V0540A solid state relay
Single phase 10~80A@250-480VAC
Input control 0-5VDC
AC zero crossing switch, DC switch (MOSFET), manual AC voltage regulation, isolated AC power regulation;
Zero crossing triggering (for resistive loads) or random triggering (for inductive loads);
• DC-AC constant current source input (3~32VDC), compatible logic TTL, COMS circuit;
AC-AC wide voltage 90~250VAC, suitable for 110220VAC control;
.DC-DC wide voltage: 3-32VDC, using DC12V, DC24V. load 5-60VDC, suitable for DC12V, DC24V;
.LA regulating voltage regulator: 4-20mA current regulation
- touch protection cover standard configuration (without purchase);
High electromagnetic compatibility (EMC), suitable for harsh working environment;
Comply with CE standard and comply with Rohs directive;
Accept ODM, OEM service.
Notes on the use of SSR:
A: load current safety factor, resistance load is 2-3 times, inductive load is 5-7 times. Below is the recommended derating factor for a load current at normal temperature:
White woven lamp
Single phase motor
B: heat and heat dissipation: when the SSR is on, there is a pressure drop at both ends, which produces Joule heat, especially when working at high current. Therefore, in the thermal design, environmental temperature, ventilation conditions, installation density and installation methods should be taken into account to ensure that the surface temperature is below 60 degrees. 1, for 5A below SSR, should be installed in the ventilation environment better heat dissipation window, or cooling air blowing place. Installation should be higher than the circuit board 1-2mm, while the bottom should be hollowed out. 2, for the 10A and above SSR, should be based on the actual size of the output current radiator with different area, evenly between the bottom plate and the thermal grease in the relay radiator mounting surface, and then screw down. When the output power is too large or the surface temperature is close to 60 degrees, fan cooling or water cooling should be used.
C: over-current protection: SSR not allowed to flow, although the selection has been considered the derating coefficient, but the load in frequent startup, shut off, the very state of over-current, short circuit, people are likely to lead to permanent SSR failure, so we must protect them, generally in the output string quick fuse wire loop load is less than 20ms.