A contact device for providing an electrical contact between a first busbar (3) and a second busbar (4) which are arranged substantially parallel to each other, comprises a holder (2) with two sidewalls (21, 22) which extend substantially parallel. Said sidewalls (21, 22) enclose a slot (23) for receiving the second busbar. The sidewalls (21, 22) comprise an inner surface (211, 221) facing the slot (23) and an outer surface (212, 222). One sidewall (21, 22) is adapted to face the first busbar (3) with its outer surface (212, 222) and to face the second busbar (4) with its inner surface (211,221). Said sidewall (21) comprises a contact element (1) for providing an electrical contact through said sidewall (21) from the inner surface (211) to the outer surface (212).