Panel-Mount Solid State Relays Crydom/Sensata Panel-Mount Solid State Relays offer DC control and feature a Silicon Controlled Rectifier (SCR) output for heavy industrial loads. These SSRs include four rating variations: 25A to 125A at 48VAC to 530VAC, 25A to 125A at 48VAC to 660VAC, 25A to 90A at 48VAC to 690VAC, and 25A to 40A at 24VAC to 530VAC. The relays also offer a 1 Form A (SPST-NO) relay contact form in a hockey puck package with screw termination.