What this connector is and where it fits
The Siemens 3RK1902-4DA00-5AA0 is an M12 angled connector with 5 poles, terminated via screw terminals accepting a maximum conductor cross-section of 0.75 mm². Rated for a maximum operating voltage of 60 V and an ampacity of 4 A per pin, it uses an A-coded M12 x 1 thread locking interface, making it a standard field-attachable connector for sensors, actuators, and I/O blocks in industrial automation panels.
Environmental and mechanical ratings
The IP67 protection class means the connector is dust-tight and protected against temporary immersion in water — suitable for washdown zones on a production line or exposed runs along a conveyor. It operates across -40 to +85 °C and stores across the same range, so it handles both cold storage areas and hot cabinet environments near drives or transformers. The housing is zinc diecast with nickel plating; the connector fixed part is polyamide. Pollution degree 3 means it tolerates conductive pollution (condensation or light chemical mist) typical in industrial atmospheres. Rated surge voltage resistance is 0.8 kV, which aligns with the insulation coordination expected for a 60 V connector in a Category II overvoltage environment.
Lifecycle and compliance
RoHS conformity is confirmed; IEC and cUL approvals are listed, though UL and CSA are not. No CCC or C-Tick marking is noted.
Mechanical integration note
The angled cable outlet (4 to 6 mm inlet diameter) and M12 thread make this a drop-in replacement for standard A-coded M12 connectors on sensor cables or junction boxes. The 5-pole count suits 4-wire plus shield or dual-signal applications. Dimensions: 40 mm wide, 41 mm high, 20 mm deep — compact enough for tight junction boxes or multi-port distribution blocks.