Description
The Schneider Electric (Square D) B4.15 Thermal Unit Heater is a dependable overload protection part that supports motor starters and HVAC heating systems. This thermal unit operates through automatic current detection to interrupt circuits when it detects excessive power levels between 3.03–3.39 amps protecting motors from overheating damage. The bimetallic strip inside the part responds to heat from electrical current to safeguard electric unit heaters and fan systems in commercial and industrial HVAC system applications. The thermal unit provides three main advantages which are longer motor durability and improved safety features and lower maintenance expenses. The small yet efficient unit provides both reliable thermal protection and easy installation capabilities.
