Electric Low Voltage Fuse Disconnector Switching

Compared with a non fusible disconnect switch, a electric low voltage fuse disconnector switching combines the functions of a fuse and a knife switch, which means it can control the disconnection and connection of power during normal operation, and interrupt the current in the case of short circuit and over load. Wenzhou XiFa Electric Power Equipment Co., Ltd is specialized to produce electric low voltage fuse disconnector switching. To produce a solid quality fused disconnect switch, the company adopts high quality copper on the disconnect switch and fuse. The enclosure adopts epoxy resin encapsulation which could protects internal components from dust, moisture, and external forces while ensuring operator safety.

Send Inquiry

Product Description

The electric low voltage fuse disconnector switching , also known as a fuse type isolator, cleverly combines the functions of a disconnect switch and a fuse, making it a critical component in low voltage power distribution panels. Its fuse element is designed to interrupt fault currents quickly, ensuring the safety of the circuit, while the knife switch is specifically intended for switching operations under no load conditions and cannot interrupt live currents during normal operation. This unique combination positions the fused disconnect switch as a reliable guardian of circuit protection.

When the switch is closed, the knife mechanism, through a well designed linkage system, ensures firm contact between the fuse and the busbar, allowing uninterrupted current flow. Conversely, when disconnection is required, the same simple mechanism safely separates the fuse from the energized busbar, enabling rapid circuit interruption. This precise mechanical design is what allows the fused disconnect switch to operate smoothly and reliably while changing circuit states.

Electric Low Voltage Fuse Disconnector Switching

Product Parameter:

Type of Fuse	0			1			2			3
Frequency	50Hz			50Hz			50Hz			50Hz
Ue (V)	690	500	400	690	500	400	690	500	400	690	500	400
Ui (V)	800			800			800			800
In (A)	160			250			400			630
Ith (A)	160			250			400			630
Utilization	AC-21B(690V)			AC-21B(690V)			AC-21B(690V)			AC-21B(690V)
	AC-22B(500V)			AC-22B(500V)			AC-22B(500V)			AC-22B(500V)
	AC-23B(400V)			AC-23B(400V)			AC-23B(400V)			AC-23B(400V)
Making Capacity	725V、240A			725V、375A			725V、600A			725V、945A
	525V、480A			525V、750A			525V、1200A			525V、1890A
	420V、160A			420V、250A			420V、400A			420V、6300A
Breaking Capacity	725V、240A			725V、375A			725V、600A			725V、945A
	525V、480A			525V、750A			525V、1200A			525V、1890A
	420V、1280A			420V、2000A			420V、3200A			420V、5040A
Ics (kA)	50	100	100	50	100	100	50	100	100	50	100	100
Loss Power of Fuse (W)	12			23			34			48

Ith (A)	Type of Fuse	In of Fuse （A）
160	0	4、6、10、16、20、25、32、35、40、50、63、80、100、125、160
250	1	80、100、125、160、200、224、250
400	2	125、160、200、224、250、300、315、355、400
630	3	315、355、400、425、500、630

Type	A	B	C	D	E	F
HR17-160	106	200	97	60	200	87
HR17-250	185	247	128	88	221	110
HR17-400	210	290	145	97	268	125
HR17-630	256	300	160	112	285	139
HR17-800	256	300	160	112	285	139

Mode Number		Outlooking Dimension (mm)				Installing Dimension (mm)
Mode Number		A	B	C	D	a	b	фc
HR17-40	2P	55	116	76	150	25	-	ф6
HR17-40	3P	76	116	76	150	42	-	ф6
HR17-63	2P	74	116	76	150	32	-	ф6
HR17-63	3P	105	116	76	150	62	-	ф6
HR17-160	2P	75	200	83	205	43	25	ф7
	3P	106	200	83	205	66	25	ф7
	4P	138	200	83	205	100	25	ф7
HR17-250	2P	128	247	110	195	72	50	ф11
	3P	185	247	110	195	114	50	ф11
	4P	242	247	110	195	172	50	ф11
HR17-400	2P	145	290	145	340	80	50	ф11
	3P	210	290	145	340	130	50	ф11
	4P	276	290	145	340	195	50	ф11
HR17-630 HR17-800	2P	175	300	145	360	90	50	ф11
	3P	256	300	145	360	162	50	ф11
	4P	340	300	145	360	243	50	ф11

Product FAQ:

Q: What is an electric low voltage fuse disconnector switching?

A: An electric low voltage fuse disconnector switching is an electrical device that combines the protective function of a fuse with the switching capability of a disconnect switch. It provides safe isolation for maintenance and interrupts fault currents to protect circuits and equipment.

Q: Can an electric low voltage fuse disconnector switching disconnect live current?

A: No. The knife switch in a fused disconnect switch is designed to operate only when the circuit is free of load current. It should never be used to interrupt normal operating currents. The fuse element, however, will operate automatically under fault conditions.

Q: What are the main applications of an electric low voltage fuse disconnector switching?

A: an electric low voltage fuse disconnector switching is commonly used in low voltage power distribution panels, motor control centers, HVAC systems, and industrial machinery. They provide both safety isolation and overcurrent protection in these systems.

Hot Tags: Electric Fuse Disconnector, Low Voltage Disconnector Switch, Fused Disconnect Switch Supplier

Related Category