Guide rail type ammeter

The utility model discloses a guide rail type ampere meter, which belongs to the technical field of ampere meters, and comprises an upper cover and a turning cover, and the upper cover is provided with a first clamping part; the turning cover is arranged on the upper cover and hinged to the upper cover, and the turning cover is provided with a second clamping part corresponding to the first clamping part. Specifically, the flip cover is turned over relative to the upper cover and has an open state and a closed state, one of the first clamping part and the second clamping part is configured to be a clamping groove, the other one of the first clamping part and the second clamping part is configured to be a clamping protrusion, and the clamping protrusion can be clamped with the clamping groove so that the flip cover can be kept in the closed state. The guide rail type ampere meter provided by the utility model is stable and reliable in cover turning and closing, effectively ensures the safety of electricity uti