| 摘要 |
<p>An electrical service apparatus housing (12) carries a plurality of line and load blade terminals (23) and jaw contacts (416, 418). Surge suppression elements (68, 70) are carried on a circuit board (42) mountable within the housing (12) and are connected to certain blade terminals and jaw contacts for conducting electrical surges to ground. Insulating barriers (466, 468) surround the jaw contacts (416, 418) and, also, fixedly position the circuit board (42) in the housing. A switch element (76) is energized when one of the surge suppression elements (68, 70) changes state and provides an externally transmittable signal indicative of the change in state of one of the surge suppression elements. An insulating safety shield (200) surrounds the jaw contacts (416, 418). A light transmissive guide (160) carried on the shield (200) has a first end disposed adjacent to a light source (74a, 74b) on the circuit board and an opposed second end visible exteriorly through the housing (12) to provide an exteriorly visible indication of the state of the light source.</p> |
