An electrical circuit breaker comprising: a breaker handle (140, 240) for resetting a trip mechanism, the trip mechanism (130, 230) being reset responsive to the breaker handle (140, 240) being moved to an off position; a pair of electrical contacts housed within a second chamber fluidly connected to a first chamber, the pair of electrical contacts configured to separate responsive to a current flowing through the contacts exceeding a threshold; a movable surface (120, 220) biased to a first position, the movable surface (120, 220) defining an inner boundary of a portion of the first chamber, the movable surface (120, 220) being moved to a second position responsive to a pressure in the first chamber, the first chamber having a larger volume responsive to the movable surface (120, 220) being in the second position than responsive to the movable surface (120, 220) being in the first position; and characterised in that a connecting element (100, 200) having a first surface and a second surface, the first surface mechanically contacting a first component (145, 245) responsive to the breaker handle (140, 240) moving to the off position, the second surface mechanically contacting a second component responsive to the breaker handle (145, 240) moving to the off position, the first component (145, 245) being mechanically linked to the breaker handle (140, 240), the second component being mechanically linked to the movable surface (120, 220), wherein the moveable surface (120, 220) is forced to the first position by the second surface mechanically contacting the second component responsive to the breaker handle (140, 240) moving to the off position. a breaker handle (140, 240) for resetting a trip mechanism, the trip mechanism (130, 230) being reset responsive to the breaker handle (140, 240) being moved to an off position; a pair of electrical contacts housed within a second chamber fluidly connected to a first chamber, the pair of electrical contacts configured to separate responsive to a current flowing through the contacts exceeding a threshold; a movable surface (120, 220) biased to a first position, the movable surface (120, 220) defining an inner boundary of a portion of the first chamber, the movable surface (120, 220) being moved to a second position responsive to a pressure in the first chamber, the first chamber having a larger volume responsive to the movable surface (120, 220) being in the second position than responsive to the movable surface (120, 220) being in the first position; and characterised in that a connecting element (100, 200) having a first surface and a second surface, the first surface mechanically contacting a first component (145, 245) responsive to the breaker handle (140, 240) moving to the off position, the second surface mechanically contacting a second component responsive to the breaker handle (145, 240) moving to the off position, the first component (145, 245) being mechanically linked to the breaker handle (140, 240), the second component being mechanically linked to the movable surface (120, 220), wherein the moveable surface (120, 220) is forced to the first position by the second surface mechanically contacting the second component responsive to the breaker handle (140, 240) moving to the off position.