The spring-type terminals accept solid or stranded conductors from 0.5 to 4 mm², including two conductors per clamp (2x 0.5 to 4 mm²), which saves a terminal block when paralleling control wires. The 24 VDC coil draws 0.25 A at both 50 Hz and 60 Hz — a single supply figure that simplifies transformer sizing in mixed-frequency plants. At 230 VAC the same contacts carry 1 hp, and at 400 VAC they switch 3 A — adequate for small motor starters or valve actuators. The mechanical life is typical 30,000,000 operations, and the electrical endurance varies by duty: 1,000,000 operations at AC-1 (resistive), 750,000 at AC-3 (squirrel-cage motor starting), and 250,000 at AC-4 (plugging/inching).
The auxiliary switch is integral (yes), so no separate add-on block is needed for basic status feedback.