An embodiment of the invention discloses a thermomagnetic circuit breaker and power distribution equipment, which relate to the technical field of circuit protection and solve the problem that a thermomagnetic circuit breaker in the prior art cannot be applied to a small space due to large space occupation. The thermomagnetic circuit breaker comprises an insulating shell and a handle, parts and connection terminals are arranged in the insulating shell, the parts include an arc extinguishing chamber, a magnetic trip, a bimetallic strip and a tripping mechanism, the connection terminals include a first connection terminal and a second connection terminal, the handle is hinged to the tripping mechanism through a handle penetrating hole arranged on a side of the rectangular insulating shell, the connection terminals are arranged on the same side or opposite sides of the handle, and the longitudinal height of the connection terminals is smaller than that of the parts. The thermomagnetic circuit breaker and the power distribution equipment are applicable to circuit protection.