| Home > Trapped Key Interlocks > Mechanical Bolt Interlocks > K - Single Key Bolt Interlock |
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| Description |
| The K Lock is a key operated mechanical bolt interlock that is suitable for the control of electrical switchgear. The standard unit comes with a 15.88mm diameter bolt available in various lengths, that is used to control the rotation or movement of operating handles or toggles of electrical switchgear. Many suppliers of switchgear equipment have mounting kits available for interlocks. The lock is manufactured in brass or stainless steel making it ideal for use in harsh or corrosive environments. |
| Operation |
| The Bolt Interlock range is used in switchgear control to inhibit movement of cams, toggles or levers. |
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- While the side bolt is extended, the key is free. The mechanism is locked.
- By inserting and turning the key in the bolt interlock, you can retract the bolt, releasing the disconnector. This will trap the key into the lock.
- The key stays trapped while the bolt is retracted.
The length of the bolt is available in various lengths to suit the application, but the travel of the bolt is always 19,05mm. The key is free when the bolt is extended. Insertion and rotation clockwise of the key will retract the bolt. The key will be trapped in the bolt retracted position. |
| Application |
The power supply to the system is switched on and the access doors to the hazardous area are locked closed. Key A is trapped in the disconnector K Lock while the process is on.
To enter the area, the disconnector is turned to the off position and key A is released, locking the disconnector in the disengaged position.
Key A is then taken to the grounding switch. Key A enters the K lock which retracts the bolt enabling the
cammed switch lever to be rotated to engage the ground. Once rotated, the recess in the cam aligns with the second K lock. Key B from the second K lock can now be removed which now locks the lever in place ensuring that the ground connection cannot be broken.
Now that the system is disconnected and grounded, key B can be released to operate the access interlock and gain access to the dangerous area.
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| Specifications |
| Temperature rating |
Minimum: -40°C [-40°F] ice free for Q & FS Type
Maximum: 107°C [224,6°F] for Q Type/140°C [284°F] for FS Type |
| Type of mounting |
M8 (brass), Ø8,35mm (stainless steel), Ø10,3mm (US standard brass/stainless steel) |
| Weight |
Brass: 0,7kg
Stainless steel: 0,7kg |
| Material |
Brass/Stainless steel |
| MTTF Certifi cation |
Available on request |
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| Order Information |
| 1. |
Lock Portion Type |
FS / Q (diagram 1) |
| 2. |
Material |
Brass / Stainless steel |
| 3. |
L Dimension (bolt length when retracted) in mm |
0 / 6,4 / 12,7 / 19,1 / 25,4 |
| 4. |
Form |
1 / 2 / 3 / 4 (diagram 2) |
| 5. |
Lock portion symbol |
FS up to 3 digits / Q up to 6 digits |
| Part Number : 0201 |
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