Products & Solutions

Place of Origin: China
Brand Name: Longsun
Model Number: HR6
Minimum Order Quantity: 1 pc
Delivery Time: 15 working days
Payment Terms: L/C, T/T, Western Union, etc.



Fuse Type Isolating Switch


HR6 series fuse-type isolating switch (hereinafter referred to as switch) is mainly used in power distribution circuits and motor circuits with high short-circuit current with rated voltage AC 380V and 660V (45~62Hz) and agreed heating current up to 630A, as a power switch, Isolation switch, emergency switch, and used for circuit protection, but generally not used for direct opening and closing of a single motor.

Compliant with standards: GB/T14048.3, IEC 60947-3.



Normal working conditions


●Ambient air temperature is not higher than +40°C and not lower than -5°C.

● The altitude of the installation site should not exceed 2000m.

● Humidity: When the highest temperature is +40°C, the relative humidity of the air is not more than 50%, and higher relative humidity is allowed at lower temperatures, for example, 90% at 20°C. Occasional condensation due to temperature changes should take special measures.

● The pollution level of the surrounding environment is level 3.

● The switch should be installed in a place free from significant shaking, shock vibration, and rain or snow. At the same time, there should be no explosive medium in the installation place, and there should be no gas and dust in the medium that can corrode metal and damage insulation.



Main parameters and technical performance


Matching relationship between switch and fuse link


Conventional heating current (A) Fuse Model Rated working voltage (V) Melt current value (A)
160 NT00、RT16-00 380 4、6、10、16、20、25、32、35、40、50、63、80、100、125、160
660 4、6、10、16、20、25、32、35、40、50、63、80、100
250 NT1、RT16-1 380 80、100、125、160、200、224、250
660 80、100、125、160、200
400 NT2、RT16-2 380 125、160、200、224、250、300、315、355、400
660 125、160、200、224、250、300、315
630 NT3、RT16-3 380 315、355、400、425、500、630
660 315、355、400、425


Switch technical parameters


Model HR6-160 HR6-250 HR6-400 HR6-630
Rated insulation voltage (V) 660 660 660 660
Conventional heating current (A) 160 250 400 630
Rated operating current (A) 380V 160 250 400 630
660V 100 200 315 425
Rated making and breaking capacity (A) (at 1.05Ue) 380V, CO Sp=0.35 Connected 1600 2500 4000 6300
AC23B Cut off 1280 2000 3200 5040
380V connected 480 750 1200 1890
660V Cut off 480 750 1200 1890
Rated limited short-circuit current (kA) 380V, CO SD=0.35 100 100 100 100
AC23B 50 50 50 50
Maximum Expected Peak Current (kA) 100 100 100 100
Equipped with NT fuse size 00 1 2 3
Pollution level 3 3 3 3
Installation category III III III III


The rated voltage of the auxiliary switch is AC 380V, the agreed heating current is 5A, the use category is AC-15, and the rated working power is 300VA.





Lost your password?


Input your email address for our latest catalog.


Enjoy this website? Please spread the word :)