CMTM1 mndandanda wopangidwa ndi makina ozungulira ali ndi mawonekedwe ophatikizika, kakulidwe kakang'ono, kusweka kwakukulu, arc yamagetsi yayifupi, ndi zida zonse zamkati ndi zakunja.
CMTM1 MCCB ili ndi ntchito yochulukirachulukira, yozungulira pang'ono komanso chitetezo chapansi pamagetsi, imatha kuteteza chingwe ndi chipangizo chamagetsi kuti chisawonongeke.The mccb mankhwala zimagwirizana ndi muyezo IEC60947-2