We have used ABB Versarupter MV switches with motor operators and shunt trip coils. The switch can be cycled open and closed remotely through your control logic. A shunt trip coil is also available. The switch is spring charged, activation of the electrically operated shunt trip coil releases...
We are an OEM of MV switchgear and can provide 8 ga. construction. We would need plans and specs etc. You can see our capabilities on www.gavangraham.com
You can use GE CR104P pliot lights which are readily available. These are 30mm. They are available with 480VAC input. The transformer is part of the assembly.