High-Voltage Current Limiting Fuses Protection

The Current Limit Fuse Switch is in overload or short-circuit protection for elctric transformer. The current limiting means that the fuse will cut off the circuit before the shortcircuit current reaches the peak value.


Structure of fuse link


The fuse pipe is the main part of fuse, it is made by installing the fuse wire in the porcelain pipe, filling the quartz sand in the porcelain pipe and sealing to-ends of pipe. For the fuse pipe with rated current below 7.5Aand 35V rated voltage, its fuse wire is rolled on the special porcelain core, referening to chart 2. a.For the fuse pipe with rated current above 7.5A, its fuse wire is hang in the porcelain pipe.

Type	Model	Rated voltage	Fuse current	Main size mm
				A	a	L	h2	h1	H	b
RN1-3/300	RN3	3	300	270	400	450	201	247	389	108
RN1-3/400	RN3	3	400	270	400	450	201	247	389	108
RN1-6/300	RN3	6	300	370	500	550	201	247	389	108
RN1-10/150	RN3	10	150	470	600	650	226	272	414	108
RN1-10/200	RN3	10	200	470	600	650	226	272	412	108