Eaton XTCE185L22A – Heavy-Duty Auxiliary Contact Block The Eaton XTCE185L22A is a high-current, side-mounting auxiliary contact block from the XTCE series, specifically designed for use with larger Eaton contactors (e.g., DILM series, typically for frame sizes DILM185 and above). It provides additional, robust auxiliary contacts for control circuit signaling and interlocking in demanding industrial applications.