The Schneider Electric Square D 8539SBA51V03 is a combination magnetic starter designed for robust motor control and protection in demanding industrial environments. This unit is part of the 8539 series, offering reliable operation for AC squirrel cage motors up to 5 horsepower. Its integrated design combines a magnetic contactor with an adjustable overload relay, simplifying installation and maintenance.

Technical details

• Series: Square D 8539
• Type: Combination Magnetic Starter
• Amperage Rating: 18 A
• Maximum Motor Horsepower: 5 hp at 460/575 VAC
• Coil Voltage (50 Hz): 110 VAC
• Coil Voltage (60 Hz): 120 VAC
• Enclosure Type: NEMA 1 (Indoor, general purpose)
• Overload Relay Type: Thermal, adjustable

Applications & compatibility

This combination starter is suitable for direct-on-line (DOL) starting of AC squirrel cage motors in applications such as pump controls, fan systems, conveyor belts, and general machinery. It provides essential motor protection against overloads and short circuits, ensuring operational continuity in manufacturing plants, processing facilities, and commercial buildings.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric Square D 8539SBA51V03 or contact our technical team for cross-reference assistance with compatible Square D motor control components.