The structure and composition of plastic case circuit breaker are introduced:

1. nameplate;

2. Energy storage and energy release instructions;

3. Closing button;

4. Trademarks;

5. Manual energy storage handle;

6. Terminal of secondary circuit;

7. Circuit breaker "switch-off" locking device;

8. Release indication and reset button;

9. Intelligent controller;

10. Switch-off button;

11. Closing "I" and opening "0" instructions;

12. Indicate "0K" when ready for closing.

13. Drawer circuit breaker "separation" position safety padlock device;

14. Drawer circuit breaker "separate", "test" and "connect" three-position "unlock button";

15. Drawer circuit breaker rocker hole;

16. Three-position indication of "separation", "test" and "connection" of drawer circuit breaker;

17. Drawer-type circuit breaker rocker storage hole;

Note:

1. "Separation": Indicates that the main circuit and the secondary circuit are isolated;

"Test": Indicate that the main circuit is isolated and the secondary circuit is connected.

"Connection": Indicates that the main circuit and the secondary circuit are connected.

2. When the circuit breaker body is rocked to the "separation" or "test" or "connection" position, it can be automatically locked (rocker can not be rocked again), and can be unlocked by pulling the "unlock button" to the left.

Drawer seat of drawer circuit breaker:

The drawer seat of the drawer circuit breaker has a baffle to isolate the bus bar of the main circuit and plays a safety protection role when the circuit breaker is pulled out.

18. Installation hole;

19. Safety baffle;

20. Secondary circuit terminal;

21. Side plate.

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Complete internal structure diagram of plastic case circuit breaker

The structure of common plastic case circuit breaker and the function of its important components are explained in detail.