QE QUALITY general purpose relays (switching relays) can be used in many A/C, refrigeration, and heating applications. Units come equipped with power duty contacts. QE QUALITY general purpose relays specifications include: multi-positional galvanized steel mounting bracket, terminals: .250” male quick connectors, mechanical life: 1,000,000 operations, and electrical life: 250,000 operations – resistive loads / 100,000 operations – inductive loads.