15 mm slice for brake control
The 3RK1903-0CF00: At 15 mm wide, this SIMATIC module fits into a crowded DIN-rail cabinet where every millimeter of panel space is allocated — it occupies less than a typical miniature circuit breaker slot. It handles brake control across three common industrial voltages: 180 V DC, 230 V AC, and 500 V DC, so a single module type can cover different brake coil specs on the same line without adding interposing relays. The two digital inputs are parameterizable, meaning you can configure them for limit-switch feedback, brake wear monitoring, or emergency-stop status without hardware changes.
Mounting and power routing
Mounting position is vertical or horizontal, which gives flexibility in tight enclosures where rail orientation is constrained.
Industrial environment tolerance
Surge voltage resistance is 8 kV, and EMC immunity meets severity 3 per IEC 60947-1 for industrial sector ambience A — this module is designed to keep communicating through the electrical noise of motor starters and drives on the same panel. Operating temperature range is 0…60 °C with 5…95 % relative humidity, and vibration resistance is 2g with shock resistance at 5g / 11 ms — it survives the mechanical stress of a machine-mounted enclosure.