The DOL (Direct Online) & SD (Star-Delta) Panels are motor starter control panels designed to start and control induction motors using different starting methods. The DOL Starter connects the motor directly to the full supply voltage, ideal for small motors, while the Star-Delta Starter starts the motor in a star configuration to reduce starting current and then switches to a delta connection for normal operation, suitable for larger motors.

Key Features

• DOL Starters utilize contactors and overload relays for simple, direct full-voltage motor starting

• Star-Delta Starters use timer relays and multiple contactors to switch between star and delta connections

• Protection devices including overload relays, fuses, and short circuit protection

• Control wiring for start, stop, and transition sequences

• Suitable for motors typically under 5 HP (DOL) and 5-20 HP (Star-Delta)

• Compact panel design suitable for industrial and commercial applications

• Easy integration with automation systems and PLC controls

Key Advantages

• DOL Starter provides simple, inexpensive, and reliable starting for small motors

• Star-Delta Starter significantly reduces inrush current and voltage drops during motor start

• Minimizes mechanical stress on motors by smooth voltage transition

• Enhances motor lifespan and reduces maintenance costs

• Provides essential motor protection with built-in overload and fault detection

• Adaptable for a variety of industrial motor control applications