ATO ASW400 reversing contactor is used to change the direction of rotation in alternating current motors, start them gently and to monitor their load. Widely used in auto electric winch, telecommunication equiment, engineering machinery and other electric control system.

Features

• 400 amps rated load current of contact circuit.
• 2NO and 2NC contact form.
• 12V, 24V, 48V DC coil rated voltage for selection.
• Main contact voltage drop at 100A, not above 100mV.
• Mechanical life up to 300 thousand times.

400A DC Reversing Contactor Specifications

DC Reversing Contactor Circuit Diagram
Installation Diagram (Unit: mm)

Tips: Reasons for the contacts of contactor being unable to separate after powering off

1. Control line of the coil is too long, the residual voltage is too large due to the influence of lead capacitance, which is enough to maintain a close situation for the iron core. As a result, the contacts can't be separated.
2. Coil of the contactor has burnt out, deformed coil skeleton seizes the movable iron core, which makes it unable to move, thus the contacts can't be separated.
3. The contact has been fused.
4. The contactor has auto-lock function, and the function is normal.