The ZINSCO SYLVANIA CHALLENGER RC38-20 AL/CU TANDEM BREAKER is a high-quality electrical component designed for industrial use. With a maximum amperage of 20A and 2 poles, this tandem breaker offers reliable protection for electrical circuits. The Zinsco brand ensures a trusted and durable product that meets the needs of businesses and industrial applications. This thin GTE breaker is a versatile and essential part of any electrical setup, providing a dependable solution for circuit protection. check my other listings out. combined shipping always Thanks Breakers have been continuity tested. these items are as is. seller assumes no responsibility for these federal breakers