This is AC To AC SSR-25AA Solid State Relay Module 80-250VAC/24-380VAC 25A. A solid-state relay (SSR) is an electronic switch, which, unlike an electromechanical relay, contains no moving parts. The types of SSR are photo-coupled SSR, transformer-coupled SSR, and hybrid SSR. A photo-coupled SSR is controlled by a low voltage signal which is isolated optically from the load. The control signal in a photo-coupled SSR typically energizes an LED which activates a photo-sensitive diode. The diode turns on a back-to-back thyristor, silicon-controlled rectifier, or MOSFET transistor to switch the load. This particular SSR can switch current loads of up to 25A with an 80-250VAC input and a zero cross trigger control method. Each one of these relays is equipped with four screw terminals (for use with ring or fork connectors) and a plastic cover that slides over the top of the relay to protect the terminals.
Long service life and high reliability
Reduced electromagnetic interference
Highly reliable, compact size designed to offer users maximum simplicity.
Rated Load Current (mA): 25A
Dielectric Strength: Over 2.5kVA / 1 min
Trigger Voltage (VAC): 80-250
Switching Voltage (VAC): 24-380@25A
Operating Temperature Range (C): -20 to 85
1 x 80-250V SSR-25AA Solid State Relay