| 摘要 |
<p>Disclosed is an improved contact system with contact locking mechanism of the moulded case circuit breaker (MCCB). The contact system comprises of a driveshaft (1), an extension spring (2), a toggle link (3), a floating pin (4), an upper moving contact (5) with a slot, a contact pin (7), a toggle link pivot pin (8); and a spring pin (9). The upper moving contact (5) is assembled in the driveshaft (1) using the contact pin (7) having the toggle link pivot pin (8). The disclosed system provides an early fault clearing mechanism, and further the contact locking feature also works as backup protection to the mechanism and release failure. Figure 1</p> |
