Rainproof iron case switch Enclosed load switch HH3-400/3 HH3-200/3 HH3-300A Item NO.: 1942169

1、 Scope of application

HH3 series iron case load switch is applicable to the AC circuit with rated working voltage of 380V, rated working current of 10a-600a and frequency of 50Hz. It can be used to manually and infrequently connect and disconnect the circuit with load, and has the function of and short circuit protection for the circuit.

2、 Model and its meaning

3、 Structural features

3.1 the switch is designed as a side rotary operation type in structure, which is divided into four parts: operating mechanism, fuse, iron shell and contact system.

3.2 the operating mechanism has a fast breaking device, and the closing and breaking speed of the switch is the same as the action speed of the operator's hand, so as to ensure the safety of the operator and equipment.

3.3 the contact system is equipped with an arc extinguishing chamber. All the contact systems are installed in an iron box and are completely closed to ensure personnel safety.

3.4 the cover can be wedged with the latch after being closed. When the switch is in the closed position, the cover cannot be opened because the cover is interlocked with the operating mechanism. In addition, the cover can also be locked.

4、 Technical data

4.1 the rated fusing short-circuit current of the fuse of the load switch under the rated voltage of 105 ~ 110% shall comply with the provisions in the table below.

4.2 when the ambient air temperature of the fuse of the load switch is 20 ± 5 ℃, it shall fuse within 1 hour if it is connected with 1.75ie, and it shall not fuse within 1 hour if it is connected with 1.3ie (ie is the rated working current of the load switch).