(HST-M) Solenoid Released Control Switches

STAINLESS STEEL SOLENOID LOCKS 

The HST-M range of solenoid controlled trapped key interlock switches are designed to control access to machines with run down times or when access to a safety door needs to be controlled by the Safety PLC. When the key is removed the power to the machine is isolated via a switch which is directly controlled by the key movement. This movement can however only commence when a signal has been sent from a control source to energise a solenoid which is locking the key in place. Once the solenoid is energised the trapped key can be withdrawn and used to continue on in an interlocking sequence. The HST-M units are available with multiple lock portions, varying switches for isolation, varying solenoid voltages for access permission and in either a cast aluminum housing or panel mounted version. The lock portions are manufactured of stainless steel and supplied with protective dust caps as standard.