Carlo Gavazzi RS1A23D25 Solid State Relay

Carlo Gavazzi RS1A23D25 is a 25 A, SPST-NO solid-state relay (1 Form A) from the RS1A series designed to switch AC loads up to 265 VAC and energized by a 32 V DC control signal. Housed in a panel-mount, hockey-puck package, this photorelay-style SSR provides optical isolation between input and load, enabling a safe interface between low-voltage control circuits and higher-voltage AC loads. The device is cataloged as a solid-state relay suitable for panel installations in automation applications, including lighting and heating control, where silent switching and reliable operation can improve system longevity compared with mechanical relays. Its 25 A current rating and 265 VAC load rating give designers a clear boundary for selecting it for medium-to-high current AC switching tasks, while the 32 V DC input spec allows compatibility with common control logic levels. DigiKey lists RS1A23D25 as a SPST-NO photorelay and notes its hockey-puck packaging, aiding BOM decisions for service catalogs and maintenance references.