| Alarm Switch, Auxiliary Switch, Busbar, Shunt Trip, Undervoltage Release | Optional |
| Approvals | CCC, CSA, EAC, UL, VDE |
| CSA Standard | 22.2 |
| Current Rating | 20 A |
| Family Series | ABB Circuit Breakers, ST200M Series |
| Gross Weight, Net Weight | 0 lbs |
| IEC Standard | 60947-2 |
| Item Number, Manufacturer Part Number | ST203M-D20NA |
| kAIC @ 125 VDC, kAIC @ 240 VAC, kAIC @ 480 VAC, kAIC @ 60 VDC | 10 |
| kAIC @ 277 VAC | 5 |
| Manufacturer | ABB |
| Max Voltage | 125 VDC, 277/480 VAC |
| Mounting | DIN Rail |
| Neutral Pole, RoHS | Yes |
| Poles | 3 + Neutral |
| Product Series | ST200M |
| Protection | Supplemental |
| Terminal Type | Screw |
| Terminals Included | Line and Load |
| Trip Curve | D |
| Trip Unit | Fixed Thermal / Fixed Magnetic |
| UL Standard | 1077 |
