[The invention relates to a] A tension spring clamp having a housing (1) in which [the] a tension spring (2) is attached [with] by its bearing arm (3) to a power terminal (4) that protrudes through a clamping window (7) in [the] a frontal section (6) of [the] a spring arm (5) of the tension spring (2), and which is furnished with a conductor insertion aperture (8) below the power terminal (4) that in [the] a clamped position faces [the] an open area of the clamping window (7) [in the spring arm (5)], and a test tap aperture (10) opposite an actuating aperture (9) allowing insertion of a contact pin (11) of a test plug (12) that contacts the power terminal (4)[, wherein the]. The test tap aperture (10) for insertion of the contact pin (11) [of the test plug (12)] is conformed as a hollow cylinder, wherein [the] an extension of [the] a cylinder axis (A) thereof extends along [the] an inner side (13) of the bearing arm (3) [of the tension spring (2)] that is facing away from the power terminal (4)[, and besides the clamping window (7) an]. An insertion aperture (14) for the contact pin (11) [of test plug (12)] is also present in the frontal section (6) of the spring arm (5) [of the tension spring (2)].
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