| Kilo Amps (Ka) | 55 Ka |
| Thermal Adjustment Range (A) | 16-22 |
Siemens Sirius Motor Protection 16-22A/55Ka 3RV2021-4CA10 Motor Protection Switches are three-pole electromechanical protection elements that protect against short circuit and overcurrent in motor starting applications and can manually open and close the circuit. Motor protection switches are connected in series with motor power circuits.
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