Square D B8.20 Thermal Unit - Overload Protection - Class 20

Product Description

Square D B8.20 Thermal Unit protects motors and branch-circuit conductors from overheating caused by prolonged over-currents, including locked rotor currents. This unit is essential for safeguarding motors and other components from higher currents due to circuit issues. Class 20 thermal units react to overload conditions, tripping in 20 seconds or less. The unit features a single-piece construction, ensuring durability, and the motor current flows through a heater winding. In overload situations, the heat melts a special solder, causing a ratchet wheel to free spin and open the control circuit contacts.

• Calibrated for various motor full load currents
• Manual reset required after tripping
• Consistent calibration despite repeated tripping

Product Highlights

The thermal unit provides reliable overload protection for most motors and is available in multiple trip designs.

Product Information

Standard Information

• Manufacturer: Schneider Electric
• Brand: Square D

Technical Specifications

• Catalog Number: B8.20
• Type: Thermal - Melting Alloy Thermal Unit
• Trip Type: Standard Trip - Class 20
• Reset Type: Manual
• Warranty Length: 18 months
• Country of Origin: Mexico
• UPC: 785901587453
• GTIN: 00785901587453