12kV casting resin wall bushing fit to indoor medium voltage switchgears ! We are specialty on ... components, such as 12KV, 24 KV , 36KV and 40.5KV switchgear bushing , contactor box , insulators , transducers . 630A, 1250A ,2500A , 3150A and 4000A ... and 24KV earth switch. KYN28A-12 and KYN61 high voltage switchgear components! wall bushing