Abstract: An opening switch and a remote circuit breaker are provided. The opening switch includes a base, and an energy storage assembly (100) and a lock catch assembly (200) that are disposed on the base; the energy storage assembly (100) is disposed on an inner wall of the base, one end of the lock catch assembly (200) is hinged to the base, a lock catch protrusion (210) is disposed on the lock catch assembly (200), and the lock catch protrusion (210) includes a barrier wall (211); and when the barrier wall (211) is configured to abut against an energy storage arm (140) of the energy storage assembly (100), under an action force of the energy storage arm (140), the lock catch assembly (200) has a rotation tendency, so that the energy storage assembly (100) maintains an energy storage state.