Patent ID: 11916372
Assignee: BELIMO HOLDING AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor protection device (1), the motor protection device (1) including:
a) an interrupter unit (11, Q1, Q2) for electrically connecting a power supply (Vcc) and an electric motor (M) in an operation mode and electrically dis-connecting the power supply (Vcc) and the electric motor in an alternative overload mode;
b) an overload detection unit (12), wherein the overload detection unit (12) is configured to monitor a motor current and to control the interrupter unit (11, Q1, Q2) to switch from the operation mode into the overload mode if the motor current indicates an overload condition of the electric motor (M) in the operation mode;
c) a recovery detection unit (13), the recovery detection unit (13) being configured to monitor a motor temperature and to control the interrupter unit (11, Q1, Q2) to switch from the overload mode back into the operation mode if the motor temperature indicates a recovery from the overload condition.