MGN61512 Multi 9 MCB Mini Circuit Breaker 1P 20 A 6 kA Curve C. C60H series are a high performance range of MCBs for direct current networks These are designed for demanding installations to ensure maximum continuity of service. Tripping Curve C. Reliability: guaranteed breaking of DC current for best anti-fire protection. The C60HDC is multi standard enabling it to be used all over the world.