The Siemens 3SE7120-1BF00 is a SIRIUS cable-operated switch in a painted metal enclosure rated IP65, with a grey plastic top cover. It carries a thermal current of 6 A and is rated for 400 V insulation voltage with surge withstand at 6 kV. Two normally-closed safety-related switching contacts provide the emergency stop function, with silver contacts and screw-type terminals accepting 2x (0.5... 2.5 mm²) solid or stranded wire. The switch is rated 6 A at 240 V and 400 V, and 3 A at 24 V.
The 6 A thermal current and 400 V insulation voltage define the maximum continuous load and system voltage class. At 240 V and 400 V the switch is rated 6 A; at 24 V it derates to 3 A. The 250 V rating of 0.27 A likely reflects a DC inductive load curve — verify against your specific load type. Ambient temperature range of -25 to +70 °C suits outdoor or unheated enclosures. The IP65 metal enclosure handles washdown and dust, with two M20 x 1.5 cable entries and screw fixing. Dimensions are 171 mm high, 52 mm wide, 54 mm deep.