Vertical Key Exchange System with Solenoid-Controlled Key Release, Pushbutton and Lockout Dustcover (SS-ISB4-X-PB-LT)

The SS-ISB4-X-PB-LT integrates a solenoid-controlled isolation switch with mechanical key exchange in a single unit. By reducing the number of key transfers required in a trapped-key system, it simplifies system design while improving operational efficiency. Manufactured from robust 316 Stainless Steel construction, the SS-ISB4-X-PB-LT is designed for reliability in harsh industrial environments. An integrated changeover pushbutton has been incorporated into the lid assembly and can be wired to provide a request signal for key release. A lockout dust cover is provided with four additional holes to support LOTO procedures.


  • Releases up to 5 keys, including the solenoid-controlled isolation key
  • Integrated monitoring contact block
  • Robust 316 Stainless Steel construction for industrial durability
  • Tested to IP69K
  • Reduces key transfers for simpler, more efficient trapped-key systems
  • Suitable for harsh and demanding industrial environments including washdown
  • Lockout Dustcover Included

Part NumberNumber of KeysContact ConfigurationKeys FreeKeys Trapped
SS-ISB4-2-31-0x2-PB-LT23NC/1NO02
SS-ISB4-2-31-1x1-PB-LT23NC/1NO11
SS-ISB4-3-31-0x3-PB-LT33NC/1NO03
SS-ISB4-3-31-1x2-PB-LT33NC/1NO12
SS-ISB4-4-31-0x4-PB-LT43NC/1NO04
SS-ISB4-4-31-1x3-PB-LT43NC/1NO13
SS-ISB4-5-31-0x5-PB-LT53NC/1NO05
SS-ISB4-5-31-1x4-PB-LT53NC/1NO14
SS-ISB4-2-22-0x2-PB-LT 22NC/2NO02
SS-ISB4-2-22-1x1-PB-LT22NC/2NO11
SS-ISB4-3-22-0x3-PB-LT 32NC/2NO03
SS-ISB4-3-22-1x2-PB-LT 32NC/2NO12
SS-ISB4-4-22-0x4-PB-LT 42NC/2NO04
SS-ISB4-4-22-1x3-PB-LT 42NC/2NO13
SS-ISB4-5-22-0x5-PB-LT 52NC/2NO05
SS-ISB4-5-22-1x4-PB-LT 52NC/2NO14

Note
Key sold separately

Technical Data
ApprovalscULus
Enclosure Material316 Stainless Steel
Enclosure protectionIP69K
Operating Temperature-20 ... +40 °C
Solenoid Voltage24V.dc (+/- 10%)
LED2 voltage24V.dc (+/- 10%)
Mechanical Life (B10d)1,000,000 cycles
Changeover pushbutton (if fitted)24V.dc / 400mA