Nickel-plated brass screw shell, mountings lots accept 3.5 or 4 in outlet boxes, accepts most manufacturers light bulb protective cages|Plated carbon steel fasteners|Heat resistant thermoset material|4 terminal screws (mounting screws included)|Item designation: P according to DIN EN 61346-2, H according to DIN 40719 extendable after IEC 204-2/according to IEC 750|Suitability for integration pressure selection button, suspension switch, front element, suspension pushbutton|Operating cycles/maximum: 1000 per hr, electrical operating cycles as operating time/with contactors 3RT1015 to 3RT1026/typical: 100000000, mechanical operating cycles as operating time/typical: 10000000|IP20 of terminal enclosure, IP40 of housing|Auxiliary Contacts: 2 X 1 - 1.5 sq-m solid, 2 X 0.5 - 0.75 sq-mm solid with conductor end processing, 2 X 0.5 - 1.5 sq-mm stranded with conductor end processing, 2 X 18 - 14 AWG conductors|0.8 Nm tightening torque|Rated Impulse Voltage: 4 kV|250 VAC rated insulation voltage