MCB, SPD, RCCB manufacturer / supplier in China, offering 40A RCCB Type B 4P Electromagnetic with 6kA Protection Timelec, 40A Electromagnetic RCD 4P 6kA with IEC 61008-1 Timelec, 25A RCCB Type B Electromagnetic 4P Tripping Curve B/C/D Timelec and so on.