The Siemens Industry Inc. 200 Amp 4-Space 8-Circuit Outdoor Mobile Home Main Breaker is convertible from main lug to main breaker and vice versa and offers additional breaker positions to allow connection of external circuits such as lights and pumps. This main breaker contains a highly conductive copper buss bar along with Insta-wire neutrals, ground and circuit breakers that help provide quick conductor connections. UL listed for use as service entrance equipment.