B8.20 - Square D Thermal Unit

B8.20 - Square D Thermal Unit

The Schneider Electric B8.20 thermal overload relay unit is designed to help you protect electric motors from overheating and overload conditions that can shorten equipment life or cause unexpected downtime. Built as a Type S, Type B melting alloy thermal unit with a Class 20 trip rating, this overload relay component is commonly used in motor control applications where dependable overload protection is important for daily operation.

Compatible with NEMA Size 00 through 7 starters and overload relays, the B8.20 is a practical solution for a wide range of industrial and commercial motor control systems. Its melting alloy design provides reliable thermal overload protection, helping motors respond appropriately during prolonged overload conditions. Schneider Electric also keeps the catalog numbering straightforward, making identification and replacement easier during maintenance or retrofit projects.

Key Features and Benefits

• Type S, Type B thermal overload relay unit: Designed for dependable motor overload protection applications.
• Class 20 motor trip rating: Supports reliable overload response for motor control systems.
• Melting alloy thermal overload protection: Helps protect motors during prolonged overload conditions.
• Designed for motor overload applications: Suitable for commercial and industrial motor control systems.
• Compatible with NEMA Sizes 00–7: Supports a wide range of starter and overload relay applications.
• Supports motor protection and equipment longevity: Helps reduce wear caused by overload conditions.
• Helps reduce downtime caused by overload conditions: Supports more reliable daily operation.
• Suitable for commercial and industrial environments: Designed for demanding electrical applications.
• Compact and easy-to-install design: Helps simplify maintenance and replacement work.
• Simple catalog numbering for easier identification: Makes replacement and maintenance more manageable.
  

Technical Specifications

• Manufacturer: Schneider Electric
  
• Catalog Number: B8.20
  
• Product Type: Thermal Overload Relay Unit
  
• Thermal Overload Type: Melting Alloy
  
• Motor Tripping Class: Class 20
  
• Product Range: B
  
• Maximum Voltage: 600V
  
• Compatible NEMA Sizes: 00–7
  
• Package Dimensions:
  • Height: 0.800 in.
  • Width: 1.100 in.
  • Length: 2.400 in.
• Product Weight: 0.80 oz
  
• Country of Origin: Mexico
  
• Warranty: 18 Months
  

Material Compliance and Certifications

• Packaging: Packaging made with recycled cardboard.
• Recyclability Potential: 86%
• Environmental Footprint: 13 kg CO2 eq.
• Application Compliance: Manufactured to support commercial and industrial motor control applications.
  

Where It Works Best

• Motor control centers
• HVAC equipment
• Industrial machinery
• Conveyor systems
• Pump control applications
• Manufacturing facilities
• Commercial electrical systems
• NEMA motor starter applications