It snaps onto size S00 contactors and contactor relays in the SIRIUS family, adding four auxiliary poles for signal feedback or interlocking in a control panel. Rated for 10 A thermal current (Ith), the contacts carry 10 A at 24 V DC and derate across the voltage range — 6 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, and 0.5 A at 440 V DC. The AC-15 rating at 690 V is 1 A, matching typical pilot-duty loads like contactor coils and solenoid valves. That 10 A thermal figure governs the maximum continuous current through any one pole; the DC switching curve matters more for actual break capability on inductive DC loads. The block is IP20 on the front, rated for a surge voltage of 6 kV, and accepts 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) conductors with ferruled ends.
Mounts by snap-on onto any SIRUS S00 contactor or contactor relay — no tools needed, but verify the contactor's auxiliary slot accepts the 3RH1 block profile. The 36.5 mm width keeps the assembly within the S00 envelope, important for high-density DIN-rail layouts where every millimeter of space is allocated. Screw terminals are standard; strip length of 8 to 10 mm avoids whiskers under the terminal clamp.