Square D Homeline Circuit Breaker Homeline circuit breaker. Used for overload and short-circuit protection of electrical systems. Compatible with Homeline load centers and CSED devices. Rated for 120 volt/240 volt and 10,000 AIR. Designed exclusively for the residential market. ANSI American National Standards Institute certified and UL Underwriter's Laboratories listed. Homeline circuit breaker. Used for overload and short-circuit protection of electrical systems. Compatible with Homeline load centers and CSED devices. Rated for 120 volt/240 volt and 10,000 AIR. Designed exclusively for the residential market. ANSI American National Standards Institute certified and UL Underwriter's Laboratories listed.