Abstract: A thermally activated short-circuit switch for connection in parallel with a battery cell has first and second contact elements (6; 3) which are distinct from the electrodes of a diode, and thermally activatable means (45) for short-circuiting the first and second contact elements (6; 3). The first and second contact elements have respective first and second regions (6; 3) facing each other, and said thermally activatable means (45) is mechanically linked to the first contact element (6).

Abstract: A thermally actuated switch which embodies an active unit which includes a heat responsive element which is part of an enclosure enclosing electrical resistance elements for heating. Heat is applied internally to the enclosure and cooling is by way of dissipation of heat externally from the enclosure. The thermally responsive element is in the form of a flat plate which expands lengthwise. The plate engages the shorter arm of a pivoted bell crank lever, which along with the leaf spring engages the actuating member to be actuated.

Abstract: An intermittently operable switch assembly comprises an electrically insulating base having mounted on one surface thereof a first electrical terminal for connection to a power supply, a second electrical terminal for connection to an apparatus to be operated intermittently, and a third electrical terminal for connection to an indicator lamp. On the opposite surface of the base are mounted a first support carrying an armature at one end thereof which is engageable with a first fixed contact and having an electrical winding thereon, a second support including a mounting flange and having a snap action circuit breaker mounted thereon, and a third support having a second fixed contact thereon with which the circuit breaker is arranged to engage. The first, second and third terminals are secured to the base respectively by means of three rivets with which they are respectively electrically connected.