The present invention relates to a circuit protection device including: a device comprising a heating element configured to comprise a body and a pair of electrodes formed on the body, and a pair of lead wires connected, respectively, to the pair of electrodes; and a case having an independent accommodating space formed therein to accommodate at least the heating element, wherein the case includes at least one heat insulating layer disposed in the vicinity of the accommodating space.

The present invention relates to a circuit protection device including: a device comprising a heating element configured to comprise a body and a pair of electrodes formed on the body, and a pair of lead wires connected, respectively, to the pair of electrodes; and a case having an independent accommodating space formed therein to accommodate at least the heating element, wherein the case includes at least one heat insulating layer disposed in the vicinity of the accommodating space.

A potentiometer comprises a cylindrical case (2) having an upper edge portion (3) and housing an electric adjustment device (5) enclosing a variable resistance, means (8) for the electrical connection of the electrical adjustment device (5) to the circuit to be controlled, a knob (9) partially inserted into the case (2), a drive shaft (10) at least partially housed in the case (2) with a first end (11) associated with the knob (9) to be integral in rotation therewith and a second end (12) interacting with the variable resistance to vary the instantaneous value thereof upon the rotation of the shaft (10). The electric adjustment device (5) comprises a box-like housing (14) coupled to the electrical connection means (8) and housing the variable resistance and having a longitudinal passing-through hole (15) suitable for snugly fit the second end (12) of the shaft (10).

A potentiometer comprises a cylindrical case (2) having an upper edge portion (3) and housing an electric adjustment device (5) enclosing a variable resistance, means (8) for the electrical connection of the electrical adjustment device (5) to the circuit to be controlled, a knob (9) partially inserted into the case (2), a drive shaft (10) at least partially housed in the case (2) with a first end (11) associated with the knob (9) to be integral in rotation therewith and a second end (12) interacting with the variable resistance to vary the instantaneous value thereof upon the rotation of the shaft (10). The electric adjustment device (5) comprises a box-like housing (14) coupled to the electrical connection means (8) and housing the variable resistance and having a longitudinal passing-through hole (15) suitable for snugly fit the second end (12) of the shaft (10).

This shunt resistor includes: a first terminal and a second terminal each made of an electrically conductive metal material and having a first planar surface and a second planar surface, the respective first planar surfaces of the first terminal and the second terminal opposing each other; and a resistive body and a support column member each connected to the respective first planar surfaces and connecting the first terminal and the second terminal. The support column member is made of a metal material. An area of bonding between the resistive body and the support column member and the respective first planar surfaces is smaller than an area of the first planar surface. The first terminal and the second terminal each have a hole portion formed so as to penetrate therethrough from the first planar surface to the second planar surface.

Disclosed is a circuit protection device including a case, a negative temperature coefficient thermistor which is accommodated in the case and includes a resistant heating element, a pair of electrodes installed on both sides of the resistant heating element, and a first lead wire and a second lead wire withdrawn from the pair of electrodes, respectively, and a thermal fuse which is accommodated in the case and includes a thermal fuse body and a third lead wire and a fourth lead wire connected to both ends of the thermal fuse body, respectively. Here, the second lead wire and the third lead wire are connected to each other in the case.

A potentiometer comprises a cylindrical case (2) having an upper edge portion (3) and housing an electric adjustment device (5) enclosing a variable resistance, means (8) for the electrical connection of the electrical adjustment device (5) to the circuit to be controlled, a knob (9) partially inserted into the case (2), a drive shaft (10) at least partially housed in the case (2) with a first end (11) associated with the knob (9) to be integral in rotation therewith and a second end (12) interacting with the variable resistance to vary the instantaneous value thereof upon the rotation of the shaft (10). The electric adjustment device (5) comprises a box-like housing (14) coupled to the electrical connection means (8) and housing the variable resistance and having a longitudinal passing-through hole (15) suitable for snugly fit the second end (12) of the shaft (10).

A potentiometer comprises a cylindrical case (2) having an upper edge portion (3) and housing an electric adjustment device (5) enclosing a variable resistance, means (8) for the electrical connection of the electrical adjustment device (5) to the circuit to be controlled, a knob (9) partially inserted into the case (2), a drive shaft (10) at least partially housed in the case (2) with a first end (11) associated with the knob (9) to be integral in rotation therewith and a second end (12) interacting with the variable resistance to vary the instantaneous value thereof upon the rotation of the shaft (10). The electric adjustment device (5) comprises a box-like housing (14) coupled to the electrical connection means (8) and housing the variable resistance and having a longitudinal passing-through hole (15) suitable for snugly fit the second end (12) of the shaft (10).

A three phase surge protection device is disclosed. In an embodiment a device include a stack comprising a first varistor, a second varistor and a third varistor, wherein the varistors are electrically connected to form a circuit and a first thermal disconnect configured to interrupt the circuit when a temperature of the first thermal disconnect exceeds a predefined temperature.

A thermistor housing assembly for simplifying manual installation of a thermistor into a heat or smoke/hear detector.