The OT40F3 is a 3-pole, front-operated switch-disconnector designed for low-voltage power distribution systems. It features base mounting with DIN-rail compatibility, protected clamp terminals with screw terminal connections, and is rated for 40 A operational current at 750 V across multiple voltage classes (380–415 V, 500 V, and 690 V). The device delivers up to 11 kW at AC-23A duty cycle, with a rated impulse withstand voltage of 8 kV and short-circuit making capacity of 0.705 kA at 690 V AC. With a compact footprint (35 mm width, 68 mm height, 56 mm depth) and low power loss of 1.6 W per pole, the OT40F3 is ideal for industrial control panels, motor starters, and load switching applications where reliable disconnection and isolation are required.