post bushing for circuit breaker good quantity and competitive price ISO 9000-2008 IEC,GB,AS,BS,DIN,GEN 252kv SF6 de-arcing chamber post bushing for circuit breakerpoduct No:5935Height:1860+1.2/-0.6 mmshed Dia:472 mminner dia:180+8/-4 mm 276+7/-7 mmcentral distance of accembly hole:345+0.5/-0.5 mmspecification of assembly hole:12× Φ16.5norminal creepage distance:5330 mmfailing load for intertnal ...