Key Wrench Square Triangle Plumber for Electric Cabinet Elevator Emergency Lift

Type A features a square drive profile, while Type B features a triangle drive profile. These correspond to the two most common lock formats found on electric distribution cabinets and elevator control panels. If you are unsure which your cabinet uses, the A+B combo covers both.

These wrenches are designed to fit standard square and triangle key slots commonly used on elevator emergency release and lift mechanisms. We recommend measuring your lock opening or checking your elevator's service manual to confirm the drive profile before ordering. Contact us to confirm if you have a non-standard size.

The wrenches are machined from hardened steel, which provides the torsional strength needed to turn stiff or infrequently operated cabinet locks without bending or rounding the drive tip. For severely seized locks, apply a penetrating lubricant to the lock cylinder first to reduce the required torque.

Yes. Each wrench has a corrosion-resistant surface treatment suitable for use in humid or occasionally wet environments such as outdoor utility enclosures, basement electrical rooms, and elevator shafts. For prolonged outdoor storage, keeping the wrench in a sealed pouch or applying a light coat of oil will extend its service life.

Look at the keyhole on your cabinet lock. A four-sided opening indicates a square drive (Type A); a three-sided opening indicates a triangle drive (Type B). If you manage multiple cabinets or are stocking a service kit, the A+B combo is the most practical choice to cover both formats.

Yes. Beyond electric cabinets and elevators, these key wrenches are also commonly used to open plumbing access hatches, gas meter enclosures, and utility meter boxes that use the same square or triangle lock profiles. Verify the drive profile matches your specific panel before use.

The A+B option includes both a Type A (square) and a Type B (triangle) wrench as a set — two individual tools in one order. This is the recommended option for technicians who need to cover multiple cabinet types on a single service visit.