The invention relates to an electrical spring clamping means for an electrical connection device (1), in particular a connection device (1) for a photovoltaic solar module (4), with an electrical contact section (111, 511) and a clamping spring (120, 520) which cooperates therewith, wherein the clamping spring (120, 520) in its open position (O) is arranged under mechanical pre-stress on/in the electrical spring clamping means (100), and an electrical contact tongue (415) of an electrical mating contact element (412) can be pressed against the electrical contact section (111, 511) by means of the clamping spring (120, 520), in the closed position (S) thereof. Further, the invention relates to an electrical lead frame or an electrical conductor bar for an electrical connection device (1), in particular a connection device (1) for a photovoltaic solar module (4), with an electrical spring clamping means (100) according to the invention, with a contact cage (110) of the electrical spring clamping means (100) being a constituent of the lead frame (150) or of the conductor bar (170) and the lead frame (150) or the conductor bar (170) optionally being encapsulated. Furthermore, the invention relates to an electrical connection device, in particular a connection device (1) for a photovoltaic solar module (4), with a electrical spring clamping means (100) according to the invention or with an electrical lead frame (150) according to the invention or an electrical conductor bar (170) according to the invention.