The Schneider Electric Square D 8539SCW54V03 Combination Starter is engineered for robust three-phase motor control in demanding industrial environments. This unit is part of the well-regarded Square D 8539 series, known for its integrated safety and operational features. It combines a circuit breaker or fuse disconnect with a motor starter in a single enclosure, simplifying installation and enhancing protection.

Technical details

• Series: Square D 8539
• Type: Combination Starter
• Voltage Rating: Up to 600 VAC
• Motor Horsepower Range: 0.25 hp to 5 hp (at 208-230V, 460V, or 575V, depending on specific configuration - verify with manufacturer datasheet for exact motor voltage compatibility)
• Enclosure Type: NEMA 1 (General Purpose Indoor) - based on common configurations for this part number series. Verify specific enclosure rating with manufacturer datasheet.
• Control Circuit Voltage: Typically 120 VAC (verify with manufacturer datasheet)
• Overload Relay Type: Thermal, adjustable (verify specific overload settings and type with manufacturer datasheet)
• Interrupting Capacity: Varies by specific configuration and disconnect type (fuse or breaker) - consult manufacturer datasheet for precise rating.

Applications & compatibility

This combination starter is suitable for direct-on-line (DOL) starting of three-phase motors in applications such as pump controls, fan systems, conveyor belts, and general machinery. Its integrated design makes it ideal for panel builders and maintenance professionals seeking a reliable, all-in-one motor control solution for new installations or equipment upgrades.

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 8539SCW54V03 or contact our technical team for cross-reference assistance with compatible Square D components.