Square D A17.9 Thermal Unit

Product Description

Square D A17.9 is a thermal unit designed for motor protection. It guards motors, controllers, and circuit conductors against overheating caused by extended motor over-currents, including locked rotor currents. It works alongside branch circuit fuses or breakers to ensure safety during short circuits or ground faults.

• Offers overload protection for various motors.
• Class 20 thermal units react according to trip curves.
• One-piece design enhances reliability.

Product Highlights

The A17.9 thermal unit trips within twenty seconds under overload conditions. Heat from overload causes solder to melt, enabling a ratchet wheel to release and open motor contacts, preventing damage.

Product Information

Standard Information

• Brand: Square D
• Manufacturer: Schneider Electric

Technical Specifications

• Catalog Number: A17.9
• Type: Thermal - Melting Alloy Thermal Unit
• Trip Type: Standard Trip - Class 20
• Reset Type: Manual
• Country of Origin: Mexico
• Warranty Length: 18 months
• GTIN: 00785901585497
• Product UPC: 785901585497