Small-sized circuit breaker with high flame retardance

The invention discloses a small-sized circuit breaker with high flame retardance. The small-sized circuit breaker comprises a flame-retardant shell (5), wherein a fire extinguishing arc (3) is arranged in the flame-retardant shell (5), a support (9) is arranged on the fire extinguishing arc (3) and is connected with a dual-alloy sheet (8) by a connection rod, the dual-alloy sheet (8) is connected with a binding post A (6-1) by the connection rod, a nut A (7-1) is fixedly arranged on the binding post A (6-1), the binding post A (6-1) is adaptive to the nut A (7-1), a coil (4) is wound around the support (9) and is connected with a contact (1) by a wire (2), the contact (1) is connected with a binding post B (6-2) by the connection rod, a nut B (7-2) is fixedly arranged on the binding post B (6-2), and the binding post B (6-2) is adaptive to the nut B (7-2). 本发明公开了种高阻燃的小型断路器,其特征在于：包括阻燃外壳（5）；所述阻燃外壳（5）内设有灭火弧（3），灭火弧（3）上设有支架（9），支架（9）上通过连接杆与双合金片(8)，双合金片(8)通过连接杆与接线柱A（6-1）相连接，接线柱A（6-1）固定装有螺母A（7-1），接线柱A（6-1）与螺母A（7-1）相适