The Siemens SIRIUS 3RH2140-1B is a control relay designed for industrial applications. It features 4 NO (normally open) contacts and operates on 24V DC. This relay belongs to the S00 frame size and is equipped with screw terminals for secure connections. 

Contacts:3 Normally Open (NO) + 1 Normally Closed (NC)

Voltage: 230V AC, 50/60 Hz

Power Loss: 1.43 W (without load)

Insulation Voltage: 690V (rated)

Surge Voltage Resistance: 6 kV

Operation: -25°C to +60°C

Control Supply Voltage: 230V AC (50/60 Hz)