| Number of Poles | 3P |
| Current Rating | 40A |
| Tripping Characteristics | Type D |
| Rated AC Voltage | 400V |
| Rated DC Voltage | 125V |
| Breaking Capacity at Maximum Voltage Rating | 10 kA |
| Range | System Pro M Compact |
| Series | S200M |
| Circuit Breaker Type | MCB |
| Length | 88mm |
| Width | 52.5mm |
| Mounting Style | DIN Rail Mount |
| Depth | 69mm |
| Model Number | S203M-D40 |
| Tripping Mechanism | Thermal |
| Application | Commercial, Residential |
| Terminal Contact Type | Screw |
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