To provide an electrical feed-through connection block incorporating an over-current protection device.

The electrical feed-through connection block (50) comprises a housing (52) having a front part and a rear part and capable of installation, a first conductive terminal (54) extending from the front part of the housing (52), a second conductive terminal (70) extending from the housing (52) in the opposite direction to the first terminal (54), and an over-current protection device arranged in the housing (52). The over-current protection device is configured to provide a conductive path between the first conductive terminal (54) and the second conductive terminal (70) when it is in non-overcurrent position.