Protect against over currents or short circuits with air circuit breakers from 3L2R. When a fault occurs in a circuit, call us for the replacement unit and or parts from our inventory to help you to get out of trouble. We have new and refurbished air circuit breakers for sale. All of our refurbished air circuit breakers are fully inspected and tested for peak performance and reliability. Every air circuit breaker sold by 3L2R Inc. comes with a one-year warranty so you know that if anything goes wrong, we will make it right.