| Product Item | HGL |
| Rated Current | 63A-3150A |
| Rated voltage | AC690V/AC1000V |
| Breaking Capacity（kA） | AC-21B AC-22B AC-23B |
| Standard | IEC 60947-3 |
| Applications | Power control system
industry electrical equipment |
Read on what is isolator switch?
What is load break switch？
Load break switch is a type of equipment that isolates the power failure part from the live part and creates a clear break point to isolate the faulty equipment or carry out the maintenance.
The difference between load break switch and circuit breakers？
A Load break switch is similar in structure to a disconnector (both have visible disconnection points in the disconnection state), but it can be used to open and close circuits, which in turn resembles a circuit breaker.
However, a circuit breaker can control any circuit, while aLoad break switch can only switch on or off load current, or switch off over load current, so it is only used to switch off and on circuits under normal conditions, not short circuit fault current. However, it is required that its structure can pass the fault current of short circuit time without damage.
Because the arc extinguishing device and contact of the Load break switch are designed to cut off and connect the load current, the Load break switch should be used with the fuse in most cases, and the latter is responsible for cutting off the short-circuit fault current.
The opening and closing frequency and operating life of load disconnecting switches are usually higher than those of circuit breakers.
How to choose a good quality load break switch?
Always the top brands will be the most popular ones. It is my opinion that this is because of their marketing strategy, history, reputation and worldwide acceptance more than any other reasons. This does not mean they are better or worse in any way, just means they are more accepted world widely.
Here is something you have to keep in mind when choosing a load break switch manufacturer:
- Whether the contact and terminal board are copper plated with silver, with two separate contact surfaces, to ensure good electrical performance and reliability of closing in place？
- Whether the operation mechanism adopts spring energy storage, instantaneous release acceleration mechanism, instantaneous connection and break double breakpoints?
- Whether there is an arc isolation plate inside the shell to separate the contacts, ensure that the arc in each phase independent indoor extinguishing, improve the safety performance of the switch?
- Except the wiring part, whether the product adopts fully closed design, with a window to directly observe the on-off state of contact?
- Whether can a special padlock be installed on the operating handle to lock the handle to prevent misoperation?
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