No contactors or switches. Its for 208/240/277v photo cell. Not multi tap. Controlling 4 - 400 watt MH parking lot lights. Drawing 6 amps. All 3 phases 120v to ground, no wild leg. Just have the photo cell in line with one of the phases, Black in, red out, white to neutral.

The Golden Rule - "The man with the gold makes the rule"