Soft Starter, SIRIUS 3RW52 Series, Advanced Motor Starting Solution, Variant AC14 - 3RW5247-6AC14

Soft Starter – Siemens SIRIUS 3RW52 Series (3RW5247-6AC14)

Advanced Motor Starting Solution | Variant AC14

The Siemens 3RW5247-6AC14 is a high-capacity SIRIUS 3RW52 series advanced soft starter designed for precise and efficient control of large three-phase induction motors. It provides smooth motor starting and stopping, reducing electrical stress on the power network and minimizing mechanical wear on driven equipment.

This model is used in very heavy industrial applications (up to ~400 kW class motors at 480 V) where high starting current control, energy efficiency, and advanced motor protection are essential.

🔹 Key Features

• Siemens SIRIUS 3RW52 Series
• Model: 3RW5247-6AC14
• Advanced industrial soft starter for heavy-duty motors
• Rated power: 400 kW @ 480 V AC
• Rated current: 470 A
• Supply voltage: 200–480 V AC
• Control voltage: 110–250 V AC/DC
• 3-phase controlled soft starting
• Integrated bypass contactor for energy saving operation
• Built-in motor overload & thermal protection
• Adjustable current limiting during start-up
• Soft torque control for smooth acceleration & deceleration
• Analog output for monitoring motor parameters
• Optional communication modules (PROFINET / PROFIBUS / Modbus TCP)
• Compact panel-mounted design with reduced wiring effort