SP-MA is a mounting board designed for Panasonic SP polarized power relays, providing flexible installation options for both 2 Form C and 4 Form C relay types. The board features a compact design with dimensions of 56.2 mm × 25 mm × 23.2 mm and includes two M3 mounting holes with a pitch of 18.4 mm, allowing direct chassis mounting or compatibility with standard 35 mm DIN rails (DIN46277). This accessory simplifies relay integration into control systems and industrial equipment by providing a standardized mounting interface. The SP-MA board is commonly used in automation controls, railway signal equipment, and industrial power device applications where reliable relay mounting and accessibility are essential.