The circuit breaker lock generally consists of a base, a cover hinged to a driving shaft on the base, and a first and second chuck for fixing the handle. The base and the cover are equipped with corresponding lock holes and locking latches. After the two chucks clamp the handle of the circuit breaker, the cover rotates to enclose the base and the two chucks, aligning the lock holes so that the padlock can be applied.
Since the outer cover wraps around the base and both chucks, and the lower edge of the base fits tightly against the surface of the circuit breaker, the cover cannot rotate, thus locking the hole and the lock core securely in place.
As a result, the circuit breaker knob cannot be turned, effectively preventing human operational errors. When adjusting the extruder screw to tighten the second chuck, the screw must be rotated several times to bring the second chuck closer to the first one.
Up to now, the core concept of circuit breaker lock design has been well-developed. Why has the design evolved so significantly from the old style to the new one? The reason lies in convenience and efficiency — it is now easy and simple to lock the circuit breaker securely.
Let’s take a look at the basic design principle: with continuous refinement through modern technology, the design of the circuit breaker lock has become more robust and reliable, unlike older products that could easily fail to lock. In current applications, users can lock the device effortlessly without any special tools or excessive force.
Even though the market still offers various types of locking mechanisms, this type of circuit breaker lock stands out for its simplicity and effectiveness. It is not the easiest locking structure to manufacture, but it is one of the most secure and user-friendly designs, making it particularly suitable for practical industrial applications.