| 摘要 |
<p>The present invention relates to a direct current circuit current overload circuit breaker, particularly that of traction vehicle. Closing armature (21) of a closing electromagnet (2) is connected with a pull rod (4), preferably in insulated manner. The pull rod (4) is provided with a stop (41) communicating with a projection (31) on a movable arm (3) arranged between two leads (P1, P2). An opening spring (32) acting counter the force of the closing electromagnet (2) is arranged between a frame (1) and the movable arm (3). One of the leads (P1) is provided with an overcurrent release (5) formed by a magnetic circuit with a form (51) and an armature (52). A strip (6) is fastened in swingable manner on said pull rod (4). A detent (71) of a pawl (7), being arranged between the pull rod (4) and the strip (6), directs against the overcurrent release (5) armature (52) wherein the pawl (7) is pivoted either on the pull rod (4) or the strip (6).</p> |
