The Siemens 5ST3020 auxiliary switch is a compact and reliable component designed to indicate the status of circuit breakers. It is commonly used in electrical panels to enhance monitoring and control capabilities. The auxiliary switch makes it easier to integrate additional switching functions into existing systems.
| Type |
Auxiliary switch |
| Additional equipment |
Auxiliary switch / fault-signal switch |
| Assembly width (TE) |
0.5 |
| Compatible with (details) |
SENTRON |
| Cross Section |
2.5mm² |
| Depth |
70mm |
| Device fitting |
Universal |
| Dim |
(W x H x D) 9 x 90 x 70 mm |
| Factory colour |
Grey |
| Function |
N/A |
| Height |
90mm |
| Installed at the factory |
FALSE |
| Number of contacts as change-over contact |
0 |
| Number of contacts as normally closed contact |
1 |
| Number of contacts as normally open contact |
1 |
| Number of fault-signal switches |
1 |
| Rated switch current |
N/A |
| Rated voltage |
400V |
| Suitable for max. current main contact unit |
N/A |
| Suitable for max. number of poles main contact unit (total) |
N/A |
| Voltage Rating |
400V |
| Voltage type |
N/A |
| Voltage type for actuating |
DC |
| Width |
9mm |
| Width in number of modular spacings |
1 |
| With auto test for earth leakage function |
N/A |
