Enhance your Cutler Hammer contactor setup with the XTCEXFBG40 Front Auxiliary Contact. This accessory provides sequential auxiliary contacts for added control and functionality in your electrical systems..The Cutler Hammer XTCEXFBG40 is a front-mounted auxiliary contact accessory designed for use with specific Cutler Hammer contactors. It features sequential auxiliary contacts and is compatible with frames D-G, offering 4 normally open (NO) contacts.