Application: A circuit breaker is designed for various applications, including: Industrial Panelboards:Suitable for use in industrial settings where bolt-on mounting is preferred. Commercial Electrical Systems:Commonly used in commercial buildings for branch circuit protection. HVAC Systems:HACR rated, making it appropriate for heating, ventilation, and air conditioning equipment. Lighting Panels:Can be used in lighting panel applications requiring a 3-pole, 20A breaker.