Siemens Industrial Controls 49AB20 2-N/O Auxiliary Contact Kit

The Siemens Industrial Controls 49AB20 Auxiliary Contact Kit is a durable part used to improve control systems in HVAC systems. The auxiliary contact kit has 2 Normally Open contacts and is used for monitoring and signalling operations. Auxiliary switching is ensured by its use with contactors and motor starters in HVAC equipment such as air handlers, chillers and cooling towers. It is constructed in a robust form to enable efficient integration in control panels for improved system responsiveness and operational safety. The kit provides durable performance, simple maintenance of equipment.