Abstract: A combined isolating switch-circuit breaker comprising at least one fixed contact breaking element, one fixed isolating contact element and at least one mobile assembly comprising a mobile contact breaking element electrically connected to a mobile isolating contact element. The arrangement of said mobile contact elements with respect to said fixed contact elements is provided so that, during closure of the combined device, the fixed isolating contact is closed before the electric contact is established between the fixed contact breaking element and the mobile contact breaking element and, conversely opening of the breaking contact is provided before opening of the isolating contact occurs.

Abstract: A movable contact bridge (12) is associated with contact carrier (7) by means of a stirrup (28), a pressure spring (25) and a resilient blade (45). The stirrup has two hooks (35, 36) which hold the blade in place and facilitate removal and positioning thereof because of the gap (60) separating these hooks. This contact bridge is advantageously used in contactors of minimum rated power greater than 100 amps.