Padlock for Shutter Control Panel: Your Guide
Padlock for Shutter Control Panel: Your Guide
Your insurance company has requested a padlock that meets BS EN 12320 CEN Security Grade 4 or LPS1654 Grade 2+. These are high security ratings which indicate the padlock has been independently tested to resist cutting, prying, twisting and sawing attacks. To meet this level of protection, you will need a stronger padlock than a standard household lock.
Why Shackle Size Matters
CEN 4 padlocks generally have a shackle diameter of around 11mm. Many shutter control panel covers are designed for smaller padlocks, so the existing hole may not be large enough. The simplest and most common solution is to carefully drill the hole to around 11.5mm. This allows a compliant padlock to fit securely without weakening the cover.
Recommended Padlocks That Meet the Requirement
The following padlocks meet the CEN 4 security standard and are commonly used for shutter cabinets, access panels, plant room covers and perimeter gates:
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Abus 83/55 High Security Padlock – A strong open-shackle padlock suitable for most environments.
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Abus 83CS/55 Closed Shackle Version – Extra protection as it reduces access to the shackle, making bolt-cropping harder.
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Abus Granit 37 Series – Available with a restricted key system so keys cannot be copied without authorisation.
Key Control and Duplicate Key Security
If multiple people require access, consider choosing a restricted key system. This ensures duplicate keys cannot be cut by local locksmiths and can only be ordered by authorised users, helping maintain security.
Additional Security Consideration
If the control cover itself is made from thin stainless or mild steel, consider reinforcing the plate. Even with a high-security padlock, a thief may attempt to cut around it. Strengthening the cover removes this weak point and supports the lock doing its job.