A switching device which comprises: a body (2) which has a first side wall (21) and a first end wall (23), the first side wall (21) being perpendicular in relation to a longitudinal direction, and the first end wall (23) is substantially perpendicular to the first side wall (21); and a first fixed contact (41) comprising an inner section (412) and an outer section (414), the inner section (412) having a thickness dimension, the outer section (414) protrudes from the first side wall (21) in the longitudinal direction. The first fixed contact (41) comprises a test terminal (11) which is integral to the inner section (412) and protrudes from the inner section (412) in a lateral direction, which is perpendicular to the longitudinal direction and an end wall plane defined by the first end wall (23), the test terminal (11) having a substantially planar test terminal surface (115), and the test terminal (11) has a thickness dimension which is parallel to the thickness dimension of the inner section (412), the thickness dimension of the test terminal (11) is substantially smaller than the thickness dimension of the inner section (412), the test terminal (11) is accessible from outside the body (2) from the direction of the first end wall (23), and the test terminal (11) is adapted to be connected to a female connector.