A.78 – Square D Thermal Overload Heater Element 0.64-0.71A Motor Control

A.78

A.78 is a Square D thermal overload heater element designed to protect motors, controllers, and branch circuit conductors against excessive heating due to prolonged motor overcurrents. This Type A heater element features one-piece construction with a small heater winding that responds to motor current, tripping in 20 seconds or less under overload conditions. The A.78 is suitable for use with thermal overload relays and magnetic motor starters in motor control applications. Key Specifications

• Part Number: A.78
• Manufacturer: Square D
• Product Type: Thermal Overload Heater Element
• Type: A
• Full Load Amperage Range: 0.64 – 0.71 amps
• Mounting Type: Plug-On
• Motor Tripping Class: 20
• Sensing Method: Melting Alloy
• UPC/GTIN: 785901585145

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Specifications

• Part Number: A.78
• Manufacturer : Square D
• Brand : Square D
• Category : Motor Control
• Item Subcategory : Heater Element
• Family : A Series
• Type : A
• Full Load Amp Minimum : 0.64
• Full Load Amp Maximum : 0.71
• Full Load Amps : 0.66 to 0.71

Product Data

• UPC : 785901585145
• GTIN : 00785901585145
• Country of Origin : Mexico
• Dimensions : Depth 9.29 in (236 mm) Width 8.11 in (206 mm) Height 15.98 in (406 mm)
• Weight : 0.04