DC-DC Solid State Relay with LED Single Phase SSR-20A

These DC-DC solid state relays are very complete, they include a plastic cover for isolation, but also have a LED status indicator. The relays work directly with TTL&HTL and are opticly isolated, so can be connect to EdingCNC/USBCNC/PLC or other software interfaces. Overall a very nice product for a good price. When selecting a current rating take into account that a heatsink is required, if you want to use the listed/rated current. We often oversize the relay by at least 50%, so that heat is less of an issue. When no heatsink is used we advise to use this 20Amp relay with maximum 5amps.

Component features:

• Rated Amps: 20A (with heatsink)
• Rated Amps: 5A (without heatsink)
• TTL Compatible (5VDC)
• HTL Compatible (24VDC)
• Control Voltage 3.5 ~ 32V DC
• Control Current 5 ~ 30 mA
• Opticly Isolated
• LED Status Indicator
• Load Voltage 12 ~ 110V DC
• On/Off time <=2ms
• CAUTION when testing SSR: in normal condition, the DC SSR has a leakage current of about 0.5~1mA, therefore, when SSR input terminals without control voltage, to measure output terminals by voltage meter, meter still display a voltage. Correct testing method is to connect a lamp (minimal)15W, and the connect the voltage meter to the lamp.