Power Contactor
Power Contactor
Frequently Asked Questions
A power contactor is an electrically controlled switch used to make or break high-current power circuits, commonly employed to start, stop, or control motors, heaters, and other heavy electrical loads remotely.
A power contactor is designed to switch much higher current and voltage loads than a typical relay, featuring larger contacts and robust construction specifically built for heavy-duty motor and equipment control applications.
The coil generates a magnetic field when energized, pulling the internal contacts closed to complete the power circuit, and releasing them open again once the coil is de-energized, enabling remote electrical switching.
Many power contactors include additional normally open (NO) or normally closed (NC) auxiliary contacts, used for interlocking, signaling, or feeding status information back to control circuits and PLCs.
The rating should be chosen based on the full-load current of the connected motor or equipment, with some margin for inrush current, to ensure the contactor operates reliably without premature contact wear.
Yes, contactors are available in AC-rated and DC-rated versions, with DC contactors typically featuring arc-suppression design elements since DC arcs are harder to extinguish than AC arcs during switching.
Yes, power contactors are commonly used in combination for star-delta starting and reversing control circuits, where multiple contactors work together to manage motor starting sequences and direction changes.
Yes, we supply power contactors in bulk to panel manufacturers, switchgear assemblers, OEMs, and industrial buyers across Gujarat and India, including export orders. For pricing and details, contact us at +91 90237 59007, +91 81405 50607, or shreeshivaelectric@gmail.com.