High‑security 3‑star cylinder built to stop modern break‑in attacks.

  • Certified to the latest TS007 3-star standard for ultimate home security
  • Reinforced inside and out, resisting snapping, drilling, and forced entry
  • Patented sacrificial elements absorb impact to protect the lock’s core
  • Concealed cam and controlled‑break system protects and maintains lock function
  • Precision‑engineered with hardened body for enhanced durability
  • Backed by £5k consumer cash back guarantee (T&C's apply)
Click here to locate an authorised Mul-T-Lock dealer near you

Security you can stake your reputation on

With the MTL™300 Break Secure® 3XP Pro, every installation is a statement of trust and expertise. Built to the highest standards, tested to the toughest benchmarks, and proven in the real world – this is the cylinder that protects your customers and your good name.

FIT IT. TRUST IT. RECOMMEND IT.
Register to activate your

£5,000 Consumer Cashback Guarantee

Valid after purchase and registering. Terms and conditions apply
Register here

New standards require new solutions

As security improves, criminals inevitably find new ways to attack. To combat this, the TS007 standards for security have now been updated to ensure that the latest generation of 3-star cylinders can protect against the most up-to-date attack methods.

Make sure you stay ahead and help to protect your customers by selecting the MTL™300 Break Secure® 3XP Pro.

Built to meet updated standards

From the core components to the service behind it, the MTL™300 Break Secure® 3XP Pro delivers total confidence. Built to withstand the toughest attack methods, it comes with Mul-T-Lock’s proven support so you can fit, forget it and trust it.
  • Barrier plate & telescopic pin - Extra layers of protection against picking, bumping and drilling.
  • 3-star, Sold Secure SS312 Diamond certified - Top-tier attack resistance.
  • BS EN1303 tested for durability - Protection against multiple attack methods, ensuring strength, security, and durability surpassing industry requirements.
  • Patented keyway until 2032 - Prevents unauthorised duplication
  • Anti-snap sacrificial end - Keeps doors secure even after an attack.

Tested to:

  • TS007-1:2024

    Meets the latest three‑star standard, delivering top‑tier protection. Proven resistance against snapping, drilling, and bumping for maximum security.

  • BS EN1303:2015

    Ensuring high performance in key durability, tamper resistance, and attack protection for quality, safety, and reliable security.

  • Sold Secure SS312 Diamond

    Tested against the toughest real-world burglary techniques. It’s the ultimate reassurance that your security is built to stand firm.

  • Secured by Design approved

    Meeting official UK Police security standards, meaning they’re trusted, proven and designed to keep you safer.

Protection at its core