Electrical insulator sheet for use under the switches. Needed, because the IGBT case is the switched point, so it must not be connected to the alubos case electrically.

• Conducts heat
• good mechanical durability
• good electrical isolation, > 1000V

• 39x66 mm size. good for 2 lines (12 switches). The third line only has FETs, and the FET case is already insulated.
• 66x66 mm size. good for 3 lines (18 switches).