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MasterLock Griptight Circuit Breaker Lockout


  • Master Lock Grip Tight circuit breaker lock outs not only have a narrow profile for side-by-side lock out, they also have a secure and simple mounting for a solid lock out.
  • The body is made from hardened steel.
  • Suitable for standard breaker toggles.
  • Secure and simple mounting for solid lock-out.

MLKS506 Contents:

  • MLK491B, suitable for wide and tall breaker toggles.
  • MLK493B, suitable for standard breaker toggles.

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Delivery Information

Free delivery on all online orders over £39.99, delivered to the UK mainland only; A small order charge of £6.50 vat is charged on all orders under £39.99 (net). 

Many of our items are available for next day delivery, where items are made to order or not currently in stock delivery times will vary. Please contact us for a confirmed delivery date or alternatively a representative will confirm your order. 

Special delivery services are available; please contact our Sales Office to discuss your specific requirements. 

The following postcodes will be subject to a delivery surcharge: 

AB37 & AB38, AB41-AB56, FK19-FK21, IV1-IV40, IV52-IV54, IV63, JE1-JE5, KW1-KW14, PA21-PA40, PH15-PH41, PH49, PH50, HS, IV41-IV51, IV55 & IV56, KA27, KA28, PA20, PA41-PA78, PH42-PH44 and ZE, This also includes Northern Ireland. Certain products within our range are subject to a delivery surcharge when delivered to additional areas in Scotland than those already listed.

A customer service representive, will contact you upon receipt of your order to advise of the relevant charges or please call us to confirm the surcharge prior to placing your order

If you would prefer to collect your delivery from our warehouse, please select collection at the checkout and we will let you know when your order is ready to collect.

Contact Us for Bulk Discounts

Part Number Description Price
ID 171146
Griptight Large Circuit Breaker Lockout

(£8.33) RRP (Ex VAT)

£6.38 (Ex VAT)

£7.66 (Inc VAT)

ID 171147
Griptight Standard Circuit Breaker Lockout

(£7.67) RRP (Ex VAT)

£5.87 (Ex VAT)

£7.04 (Inc VAT)

ID 171148
Griptight Circuit Breaker Lockout Set (491B + 493B)

(£14.15) RRP (Ex VAT)

£10.83 (Ex VAT)

£12.99 (Inc VAT)

Estimated delivery is for guidance only, an exact delivery date will be confirmed on your order acknowledgement. Please contact us for further information.We make every effort to ensure that the information provided on this page is accurate, we can not be held responsible for any errors, typography or otherwise. Illustrations and images are representational of typical styles and designs may vary. Prices and specifications may alter without prior notice.

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*Online orders over £39.99 (net) delivered to UK Mainland only. Excluding certain postcodes

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