(NL1000175-C2)      The battery clamp includes an electrically conductive fastening clamp member which can be attached to a terminal of a battery. A guard circuit is coupled between a body of the clamp and a cable receiver. The guard circuit includes a controllable electronic switch which has a current input connected to the clamp and a current output connected to the receiver.    A control unit has an output coupled to an input of the switch. Monitoring members are connected to inputs of the control unit. The control unit operates the switch in response to signals which it receives at its monitoring inputs.    ADVANTAGE -   Improved safety due to reducing risk of fire caused by overheating. Interrupts overload current. Prevents motor being started by unauthorised person.    (TW319921-A)      There is described a battery clamp (1), comprising: a fastening clamp member (10) designed for attachment to a terminal of a battery; means (33) for receiving a cable (30); and a guard circuit (100) coupled between the fastening clamp member (10) and the receiving means (33). The guard circuit (100) comprises: a controllable switch (110), of which a current input (111) is electroconductively connected to the fastening clamp member (10), and of which a current output (112) is electroconductively connected to the receiving means (33); a control unit (130), of which a control output (133) is coupled to a control input (113) of the switch (110); and monitoring members (141-143) connected to monitoring inputs (134-136) of the control unit (130). The control unit (130) is adapted to control the switch (110) in response to signals received at its monitoring inputs (134-136).    (EP824417-A1)      The battery clamp includes an electrically conductive fastening clamp member which can be attached to a terminal of a battery. A guard circuit is coupled between a body of the clamp and a cable receiver. The guard circuit includes a controllable electronic switch which has a current input connected to the clamp and a current output connected to the receiver.    A control unit has an output coupled to an input of the switch. Monitoring members are connected to inputs of the control unit. The control unit operates the switch in response to signals which it receives at its monitoring inputs.    ADVANTAGE -   Improved safety due to reducing risk of fire caused by overheating. Interrupts overload current. Prevents motor being started by unauthorised person.    (JP11503690-W)      The battery clamp includes an electrically conductive fastening clamp member which can be attached to a terminal of a battery. A guard circuit is coupled between a body of the clamp and a cable receiver. The guard circuit includes a controllable electronic switch which has a current input connected to the clamp and a current output connected to the receiver.    A control unit has an output coupled to an input of the switch. Monitoring members are connected to inputs of the control unit. The control unit operates the switch in response to signals which it receives at its monitoring inputs.    ADVANTAGE -   Improved safety due to reducing risk of fire caused by overheating. Interrupts overload current. Prevents motor being started by unauthorised person.