Siemens Monitoring Relay NO/NC, 1.6 → 16 A, 16 A, 2.5 W. Pole Configuration: SP. Range: Sirius Innovation. Mounting Style: Direct Contactor. Supply Voltage: 24 V ac/dc. Series: 3RR. Terminal Type: Screw. Reset Method: Automatic, Manual. Depth: 81mm. Width: 45mm. Length: 79mm. MPN: 3RR2241-1FA30