Siemens Sentron 5SY4 MCB Mini Circuit Breaker 4P, 50 A, 10 kA, Curve D. Tripping Characteristics: Type D. Rated AC Voltage: 400 V. Length: 70.4mm. Width: 76mm. Depth: 89.8mm. Application: Industrial, Plant Engineering. Reset Actuator Type: Toggle Switch. Special Features: Double Terminal Chamber, Time-Saving Replacement. Terminal Contact Type: Screw. MPN: 5SY4450-8