The auxiliary switch is rated 10 A at 24 V, 2 A at 48 V, and 0.3 A at 220 V — covering typical PLC-level control signals and small motor starter interlocks. Size S00 (45 mm wide × 58 mm high × 73 mm deep) is the most compact Siemens contactor frame, designed to pack multiple contactors side-by-side on 35 mm DIN rail per DIN EN 60715.
Wiring and terminal capacity
For main contacts, the terminal can take 2 × (0.5–1.5 mm²), 2 × (0.75–2.5 mm²), or 2 × 4 mm². This covers standard panel wire sizes for control circuits and small motor loads.