What is a barrel lock?
The cylindrical lock that secures most utility meters in North America — explained.
A barrel lock is a tamper-resistant cylindrical lock used across the electric, gas, and water utility trades. It seats inside a meter ring or service collar and is removed only with a matching barrel key.
Why utilities use it
The smooth, tapered head defeats pliers, vise grips, and most picking attempts. The body is heat-treated and sealed against weather, which is why barrel locks have remained the utility standard for decades.
How it opens
A barrel key drops over the lock head, engages an internal cam, and rotates the lock free of the meter ring. No external surface to grip, no exposed keyway, no pick path.
Questions? Call a specialist at 951.545.8822.
How to open a barrel lock
Step-by-step on using a barrel lock meter key / Edison meter key to open electrical, gas, and water utility barrel locks.
What makes an electrical utility barrel lock so good?
Clamping force, sealing, and tamper resistance — the three reasons utilities standardized on barrel locks.
Barrel lock and key systems
How keys, locks, and rings work together as a single keyed system.