A temperature-controlled device for switching off a heating device at a limit temperature has a thermo-mechanical temperature sensor device, a switch-off device, and manual reactivation means. The switch-off device has switching means which are activated by a trigger for switching off the heating device. The manual reactivation means have a movable handle and transmission means for transmitting a force of an operator for reactivating the switching means after switching off the heating device by the trigger. The transmission means have a click spring which at the beginning is in a basic position and, when an operating force acting on said click spring exceeds a certain limit force, clicks to a deflected position. Said click spring in the basic position enables reactivating or re-switching on, respectively, of the switching means. Said click spring in the deflected position releases so much movement path on the transmission means for the switching means that said switching means by the temperature sensor device and by the switch-off device above the limit temperature are activatable and switchable by the trigger.

An expansion system for temperature detection by means of thermomechanical expansion and movement has an expansion receptacle, an elongate fluid line which is connected in a fluid-conducting manner thereto, and a switching means which is mechanically operatively connected to the expansion receptacle for the purpose of actuation of a switching process of the switching means at a settable actuation point. A working fluid is contained in the expansion receptacle and in the fluid line. Furthermore, an activation material which is formed to change, upon contact with the working fluid or upon mixing with the working fluid, said working fluid with regard to its volume and/or its flowability is contained in the expansion system.

An electric power system such as, for example, a circuit, an electric appliance, an electric generator, and/or an energy storage system, can be coupled with a negative thermal expansion component. The negative thermal expansion component can be formed from a material having negative thermal expansion properties such that the negative thermal expansion component contracts in response to an increase in temperature. The contraction of the negative thermal expansion component can form a nonconductive gap that disrupts current flow through the electric power system. The disruption of the current flow can eliminate hazards associated with the electric power system overcharging, overheating, and/or developing an internal short circuit.

The invention relates to a surge protection device, comprising at least one surge arrester and one short-circuit switching device which is connected in parallel with the surge arrester, can be thermally tripped and is spring-pretensioned, wherein the abovementioned means form one physical unit. The thermal tripping means is arranged in the region where heating of the surge arrester is expected when it is overloaded, and operating or surge current does not flow through said thermal tripping means. The thermal tripping means is in the form of a stop part which releases an unlocking slide of the switching device in the event of thermal overload. The switching device has two opposite contact pieces, wherein at least one of the contacts is of moveable design and is under spring pretension in the closing direction of the switching device. The opening state of the switching device is maintained by the unlocking slide, which is released by the thermal tripping means to close the switching device.

An advance pneumatic detector to indicate pressure changes in an environment includes a switch, a pressure tube, an endcap, a piston, and a magnet. The pressure tube is connected to the switch. The endcap is disposed on an end of the pressure tube opposite from the switch. The piston is disposed within and forms a seal against the pressure tube. The piston is slidably engaged with the pressure tube. The magnet is slidably attached to and surrounds a portion of the pressure tube. The magnet is configured to control the positioning of the piston within the pressure tube.

A surge protector includes a first and second contact connected via an energy absorbing element, such that electrical current travels from the first contact to the second contact via the energy absorbing element. The surge protector further includes a thermal spacing unit contacting the energy absorbing element and configured to be in a first physical state or a second physical state based on a temperature of the energy absorbing element. The surge protector further includes a connection unit connected to the second contact, the connection unit configured to be in a first position when the thermal spacing unit is in a first physical state and a second position when the thermal spacing unit is in a second physical state, such that the electrical current from the first contact to the second contact via the energy absorbing element is interrupted when the connection unit is in the second position.

A surge protector includes a first and second contact connected via an energy absorbing element, such that electrical current travels from the first contact to the second contact via the energy absorbing element. The surge protector further includes a thermal spacing unit contacting the energy absorbing element and configured to be in a first physical state or a second physical state based on a temperature of the energy absorbing element. The surge protector further includes a connection unit connected to the second contact, the connection unit configured to be in a first position when the thermal spacing unit is in a first physical state and a second position when the thermal spacing unit is in a second physical state, such that the electrical current from the first contact to the second contact via the energy absorbing element is interrupted when the connection unit is in the second position.

A fire protection device for small electrical devices provided with a housing. The fire protection device includes a bursting capsule featuring a hollow space that is completely enclosed and delimited by a vessel wall, wherein a liquid is disposed in the hollow space. The liquid breaks the vessel wall at a predetermined trigger temperature due to thermal expansion thereby causing the bursting capsule to rupture. When the vessel wall ruptures and releases the liquid it has a fire preventing effect and/or a fire extinguishing effect.

A fire protection device for small electrical devices provided with a housing. The fire protection device includes a bursting capsule featuring a hollow space that is completely enclosed and delimited by a vessel wall, wherein a liquid is disposed in the hollow space. The liquid breaks the vessel wall at a predetermined trigger temperature due to thermal expansion thereby causing the bursting capsule to rupture. When the vessel wall ruptures and releases the liquid it has a fire preventing effect and/or a fire extinguishing effect.

A fire protection device for small electrical devices provided with a housing. The fire protection device includes a bursting capsule featuring a hollow space that is completely enclosed and delimited by a vessel wall, wherein a liquid is disposed in the hollow space. The liquid breaks the vessel wall at a predetermined trigger temperature due to thermal expansion thereby causing the bursting capsule to rupture. When the vessel wall ruptures and releases the liquid it has a fire preventing effect and/or a fire extinguishing effect.