| 摘要 |
PURPOSE:To prevent spreading of fire to relays by providing an anti-fire spread body comprising a tubular section having longitudinal dimension longer than that of a flammable cover of the relays and fitted thereto, and an eaves section covering adjacent relays. CONSTITUTION:A fixing board 2 for fixing relays 3, contactors 4 and circuit breakers 5 is arranged in a control board body 1 while being secured thereto. In a plurality of closely arranged relays 3A-3C, the relay 3A is contained in the tubular section 6Aa of an anti-fire spread body 6A while the relay 3C, arranged laterally with the relay 3B between, is contained in the tubular section 6Ca of an anti-fire spread body 6C. The relay 3B, interposed between the relays is covered by the eaves section 6Ab of the anti-fire spread body 6A at the upper side while covered by the tubular sections 6Aa, 6Ca of the anti-fire spread bodies 6A, 6C at both sides and further covered by the eaves section 6Fb of an anti-fire spread body 6F, arranged similarly on the lower stage, at the lower side. |
