Schneider LA9G971 Mechanical Interlock, for TeSys Giga Contactor LC1G265-500 and

The Schneider Electric LA9G971 is a mechanical interlock accessory designed for use with TeSys Giga contactors in star-delta (wye-delta) motor starting applications. It provides a reliable mechanical interlocking function between large-frame TeSys Giga contactors, preventing simultaneous closure of two contactors in the circuit. The device is compact, weighing just 0.15 kg, and is rated for use up to 3000 m altitude without derating.

Technical specifications:

• Commercial reference: LA9G971
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys Giga
• Product type: Mechanical interlock
• Accessory category: Interlocking accessory
• Interlock type: Mechanical
• Number of poles: 3P
• Circuit type: Star-delta
• Compatible products: LC1G115...225, LC1G265...500, LC1G205...245, LC1G300...475
• Height: 50 mm
• Width: 80 mm
• Depth: 140 mm
• Weight: 0.15 kg
• IP protection rating: IP20 per IEC 60529
• Pollution degree: 3 per IEC 60947-1
• Operating altitude: Up to 3000 m without derating; up to 5000 m with derating factor
• Operating temperature: -25...60 °C
• Storage temperature: -60...80 °C
• Standards: EN/IEC 60947-4-1, UL 60947-4-1, CSA C22.2 No 60947-4-1, GB/T 14048.4

Features and benefits:

• Mechanical interlocking prevents simultaneous engagement of two TeSys Giga contactors in star-delta circuits
• Wide compatibility with TeSys Giga contactors from LC1G115 up to LC1G500 frame sizes
• Rated for operation in pollution degree 3 environments per IEC 60947-1
• Operable at altitudes up to 5000 m with appropriate derating, suitable for high-altitude installations
• Halogen-free plastic parts and PVC-free construction for improved environmental profile
• Packaged in recycled cardboard, supporting Schneider Electric sustainability commitments

Applications:

• Star-delta motor starting circuits using TeSys Giga contactors in industrial drive panels
• Large motor control centers requiring mechanical safety interlocking between main and star/delta contactors
• Industrial automation and process control panels with high-current three-phase motor loads
• Mining, oil and gas, or high-altitude installations where derating operation is required

Compliant with EN/IEC 60947-4-1, UL 60947-4-1, CSA C22.2 No 60947-4-1, and GB/T 14048.4. Part of the Schneider Electric TeSys Giga range.

Also known as: Schneider LA9G971, Schneider Electric LA9G971, TeSys Giga mechanical interlock, star-delta contactor interlock accessory.