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Trapped key interlock system

Key interlocks systems are used for controlling access control to machinery and installations.
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Actuator
Safety Category
Material
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Safety key switch S
20A coded safety key switch back of board mounting.
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Safety key switch in enclosure SR
20A coded safety key switch back of board mounting in IP65 enclosure.
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Solenoid controlled safety key switch in enclosure MSSR
3A / 24V DC coded solenoid controlled safety key switch in IP67 enclosure.
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Solenoid controlled safety key switch SS1
20A / 24V DC coded solenoid controlled safety key switch back of board mounting.
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Multiple safety key switch XMR
20A coded multiple safety key switch back of board mounting. Extend up to 10 lock partions into one ...
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Solenoid controlled multiple safety key switch SS2
20A / 24V DC coded solenoid controlled multiple safety key switch back of board mounting.
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Single steel door interlock with fixed actuator DM1
Fortress Interlocks coded door interlock with fixed actuator for PLe / SIL3 applications.
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Single stainless steel door interlock with fixed actuator DMSK
Fortress Interlocks coded stainless steel door interlock with fixed actuator for PLe / SIL3 applicat...
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Single steel door interlock with handle actuator DM1
Fortress Interlocks coded door interlock with handle actuator for PLe / SIL3 applications.
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Single stainless steel door interlock with handle actuator DMSK
Fortress Interlocks coded stainless steel door interlock with handle actuator for PLe / SIL3 applica...
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Steel door interlock with safety key and fixed actuator DM2
Fortress Interlocks coded door interlock with safety key and fixed actuator for PLe / SIL3 applicati...
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Stainless steel door interlock with safety key and fixed actuator DMSK2
Fortress Interlocks coded door interlock from stainless steel with safety key and fixed actuator for...
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Steel door interlock with safety key and handle actuator DM2
Fortress Interlocks coded door interlock with safety key and handle operated actuator for PLe / SIL3...
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Stainless steel door interlock with safety key and handle actuator DMSK2
Fortress Interlocks coded door interlock from stainless steel with safety key and handle actuator fo...
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Single steel bolt lock BM1
Fortress Interlocks coded bolt lock for locking isolation switches or valves in open or closed posit...
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Double steel bolt lock BM2
Fortress Interlocks coded double bolt lock for locking isolation switches or valves in open or close...
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Metal key exchange box with 3 locks XM3
Coded steel key exchange box with 3 locks (1st key trapped = 2nd + 3rd key released).
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Metal key exchange box with 4 locks XM4
Coded steel key exchange box with 4 locks (1st key trapped = 2nd + 3rd + 4th key released).
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Metal key exchange box with 5 locks XM5
Coded steel key exchange box with 5 locks (1st key trapped = 2nd + 3rd + 4th + 5th key released).
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Metal key exchange box with 6 locks XM6
Coded steel key exchange box with 6 locks (1st key trapped = 2nd + 3rd + 4th + 5th + 6th key release...

Trapped key interlock system

Trapped key interlocking is a tried and tested method of mechanically safeguarding dangerous machines and hazardous processes by releasing or trapping coded keys in a pre-determined order.