Leading Manufacturer of Safety Interlock Switches and Machine Guard Safety Switch Devices for Automation and Process Safety

Panel Mount Trapped Key Control Isolation Switch with Solenoid Controlled Key Release (SS-CS-SKR)

The SS-CS-SKR is used for isolating an electrical control circuit. The key is solenoid controlled and requires an unlock signal before the key can be turned to the OFF position, allowing it to be removed and transferred to the next stage in the Trapped Key System. The SS-CS-SKR-R has a reverse functionality to the SS-CS-SKR and does not have a key present during normal operation.

  • 316 Grade Stainless Steel Barrel
  • 4NC + 2NO Monitoring Contact Block
  • Mounts Directly to the Panel

Part NumberDescriptionConfigurationKey Included
SS-CS-SKRControl Switch with Solenoid Controlled Key Release 4NC 2NO4 N/C + 2 N/O (when the key is trapped)NO
SS-CS-SKR-RControl Switch with Solenoid Controlled Key Release 4NC 2NO (Reverse)4 N/C + 2 N/O (when the key is free)NO

Key sold separately

Technical Data
Enclosure Material316 Grade Stainless Steel with Polyester Cover
Safety ContactsUtilization Category AC15 A300 3A. Thermal Current (Ith) 5A
Overload protection fuse (fuse externally)10A. (FF).
Auxiliary Contact 24V.ac/dc 0.5A. maximum
Rated Insulation Voltage600VAC
Rated Impulse Withstand Volt2500VAC
Solenoid Voltage 24V ac/dc (+/- 10%)
Operating Temperature-20 ... +40 °C
Mechanical Life (B10d)1,000,000 cycles

Information with regard to UL Standards
Type 1 enclosure. Maximum temperature 40°C. Use 16-28AWG stranded copper conductors (rated 90°C). Terminal Torque 6 lb ins. (0.7Nm). Intended for same polarity use. A300 Pilot Duty. 240V. 3A. PF 0.38 or greater, tested for 6,000 cycles endurance.