Description of π Leviton 1221-2WL 20-Amp, 120/277-Volt, Toggle Locking Single-Pole AC Quiet Switch, Extra Heavy Duty Spec Grade - White
Top-of-the-Line Industrial Quality. Heavy Gauge Copper Alloy One-Piece Arm for Top Performance. Large Silver Cadmium-Oxide Contacts for Long Life, Prevent Sticking, Welding and Excessive Pitting. Fully Enclosed Switch Mechanism in Rugged Housing for Strength, Track and Arc Resistance. Brass Combination-Head Terminal Screws on Extra Heavy-Duty Devices, Steel Combination Head Terminal Screws on Other Devices.
I fitted them for external switches that were replaced with toroidal chamber/tips because the wrong switch was selected. permanently used to disable external ring chambers.
Pros
Brass combi-head screws on heavy equipment, steel combi-head screws on other equipment
I fitted them for the outer points which were replaced with the toroidal chamber/tips because the wrong switch was constantly being pushed shutting off the outer toroidal chambers.
I installed these for external points which have been replaced with an annular chamber/points as the wrong switch was consistently being used, thereby disabling the outside of the ring cameras.
Pros
Fully enclosed switch mechanism in rugged housing for strength, tracking and arc resistance