The Siemens 3RH2914-1GP11 is a SIRIUS coupling link — a 24 V DC auxiliary contact block that mounts directly to the front of 3RT2 power contactors and 3RH2 auxiliary contactors. It provides one normally-open (1 NO) instantaneous auxiliary contact, rated 1 A at 24 V DC, 0.2 A at 110 V, 0.1 A at 220 V, and 3 A at 230 V. The coil pulls in at 24 V DC with a tolerance of 0.7 to 1.25 times rated voltage.
This coupling link is sized for SIRIUS contactor frames S00, S0, S2, and S3. It fastens by direct mounting — no DIN rail required — and can be installed in any mounting position. Dimensions are 45 mm wide, 35 mm high, and 50 mm deep. Screw terminals accept solid conductors: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), or 2x (0.5 to 1.5 mm²) with core-end processing. Front-side IP20 protection keeps fingers out of the terminal area inside an enclosure.