This Avantco 36059942 switch is a perfect replacement for the part that came standard on BCS, BCC, BCSS, BCDI, GD4C, CRR2, CAC, and HAC series units. It is a vital part of your unit, allowing you to turn the case on or off easily. A broken or malfunctioning switch can prevent your unit from maintaining specifications and cause strain on other components, so be sure to fix it promptly.