An auxiliary contact (or switch) is an additional contact that forms a part of a circuit to increase the amount of electricity that can flow through the system . These are usually installed when there is already some primary source, but too much power needs to pass through for just one auxiliary contact to handle. Specifications: Certification: CE Origin: CN(Origin) Main Circuit Rating Voltage: 690v/10A Electricity Type: AC Phase: 3 Model Number: LA1DN is_customized: No Package Includes: 1 x Auxiliary Contact for CJX2 F4-22 690V/10A