| 摘要 |
Improvements are proposed to sealed circuit-breakers, more specifically to circuit-breakers for medium-voltage or low-voltage electrical installations of the DIN or NEMA type, either unipolar circuit-breakers (D1) (optionally bipolar or tripolar circuit-breakers) or differential circuit-breakers (D2) (D3) (residual differential), which generally comprise a body (10) formed by a usually parallelepipedal element, the front face of which has regions (R1) and (R2) for screws (P) for mounting and dismounting the circuit-breaker (D1)/(D2)/(D3) in an electrical panel (not illustrated); the front face of the circuit-breaker further includes a central region (R3) in which the actuation lever (11) is located; the regions (R1) and (R2) of each circuit-breaker (Dl)/(D2)/(D3) are provided with support assemblies (12) for a plate (13) covering at least one screw (P); said support assembly (12) includes a hinge element (14) for opposite end shafts (13a) of the plate (13) and elements (15) that extend through respective apertures (13b) in the plate (13) and can house the strip (16a) of a seal (16). |
