Siemens 3RH1921-1CA01 Auxiliary Contact Block
Siemens 3RH1921-1CA01 Auxiliary Contact Block
- It allows for the monitoring, signaling, and interlocking of electrical circuits in industrial, commercial, and residential applications. It typically consist of one or more additional sets of contacts that are mechanically linked to the main contacts of the contactor or relay. These contacts can be normally open (NO), normally closed (NC), or a combination of both.
Product Specification:
| during storage | -55 … +80 °C | |
| during operation | -25 … +60 °C | |
| mechanical service life (switching cycles) typical | 10 000 000 | |
| electrical endurance (switching cycles) at AC-15 at 230 V typical | 200 000 | |
| contact reliability of auxiliary contacts | 1 faulty switching per 100 million (17 V, 1 mA) | |
| insulation voltage with degree of pollution 3 at AC rated value | 690 V | |
| surge voltage resistance rated value | 6 kV | |
