Single Row Terminal Blocks are available in four basic line to line molding sizes. Some are available in either open or feed thru/printed circuit designs. The basic material is phenolic. Modifications are also available on most terminal blocks, including marking strips.
411 GP 06 PSB / 411 GP 06 PSB KT11 KT12
812 GP 03 KT75
The voltage ratings of terminal blocks are based upon the minimum spacing between electrically conductive parts line-to-line through air and over surface and line-to-ground through air and over surface.
Class A - Service, including deadfront switchboards, panel boards and service entrance devices.
Class B - Commercial appliances including business equipment and electronic data processing equipment.
Class C - Industrial, general