GW5-40.5D has an additional grounding knife switch on the ordinary isolation switch, which can be divided into single grounding and double grounding.
GW5-40.5K adds a disconnection spring and a buffering device, usually used in combination with JW1 grounding switch. GW5-40.5E adds a supporting conductive rod and is only suitable for places with hard bus arrangement. GW5-40.5Z is a special installation type.
