ABB 155S777-1 Industrial Relay Replacement Kit

The ABB 155S777-1 Industrial Relay Replacement Kit is a pneumatic relay replacement assembly designed for use with Taylor Automax controllers. The kit bears the part number 155S777-1 and is described in listings as a replacement option for the Taylor Automax relay used in ABB’s Taylor automation ecosystem. Intended for maintenance and retrofit projects, it provides a ready-to-install replacement pneumatic relay intended to restore proper switching performance within compatible Taylor Automax controllers. Applications typically involve ABB’s Taylor Automation setups where the controller relies on a pneumatic relay to actuate a control circuit or safety interlock. Because the exact electrical and mechanical fit can vary by Automax model, the correct installation should be verified against the specific controller documentation and, if available, the replacement kit’s mounting and wiring instructions. This part is positioned as a direct part-number replacement, helping technicians minimize downtime during relays servicing and keeping legacy Taylor Automax installations operational. When ordering, confirm compatibility with your Automax controller model and review any prerequisites or required ancillary components per the official installation guidance.