Emergency Stop Switch, Actuator Tamper proof to ISO 13 850/EN 418 Fits standard 22mm mounting hole 90mm label supplied Protective collar is designed to be used with RMQ Titan E-Stop heads, to reduce the chance of operating a E-Stop unintentionally by striking it, It is fitted between the E-Stop head and the mounting panel Note Illuminated models require a suitable LED to be fitted (see stock no. 399-3646 or 399-3747 ) Contact blocks must be purchased separately see stock no. 399-3551 typically. Approvals UL, CSA. Standards IEC/EN60947. Eaton RMQ Titan 22mm Range