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

Box Mount Trapped Key Power Isolation Switch (M-ISB1)

The M-ISB1 is the first stage in the Trapped Key Process and is mounted to a polyester box enclosure. Turning the key switches the POWER OFF, allowing the key to be removed and transferred to the next stage in your Trapped Key System.


  • Body Material: Die-Cast Metal Barrel and Plastic Box Enclosure
  • Contacts: 4-Pole Capable of Switching 690V at 25A or 40A

Part NumberDescriptionCurrentContactsMaterialKey
M-ISB1-25ISB1 Isolation Switch Box 25A 4 Pole25A4-PoleDie-Cast Barrel / Polyester EnclosureNot Included
M-ISB1-40ISB1 Isolation Switch Box 40A 4 Pole40A4-PoleDie-Cast Barrel / Polyester EnclosureNot Included

Note
Key sold separately

Technical Data
Enclosure MaterialPolyester
Barrel MaterialDie-Cast Metal
Isolator Block Specifications See data sheet or technical drawings
Mechanical Life (B10d)1,000,000 cycles
Ambient temperature-20 ... +40 °C

PROCEDURE TO DIMOUNT THE COVER (ISB1 / ISB2)
ISOLATE POWER. ENSURE SWITCH IS IN THE OFF POSITION. UNSCREW THE COVER SCREWS AND REMOVE COVER. AFTER WIRING ENSURE COVER IS FITTED TO ORIGINAL POSITION. DO NOT OVERTIGHTEN THE COVER SCREWS (RECOMMENDED TORQUE 0.5Nm).