HR6 Industrial Fused Knife Disconnect Switch

The HR6 Industrial Fused Knife Disconnect Switch provides robust circuit protection and isolation for industrial power systems, supporting 4A-630A loads with NT00-NT3 fuse links at 400-600V. This fused disconnect switch integrates high-breaking capacity fuse technology for reliable overload and short-circuit protection, ensuring safe operation in demanding environments. Designed for AC distribution panels, the HR6 switch features a manual knife-disconnect mechanism with visible isolation gaps. Its compatibility with multiple fuse ratings (4-630A) and dual voltage support makes it ideal for motor control centers, machinery, and power distribution cabinets requiring fused protection and maintenance safety.

product details

Type and Meaning

1	Fuse-disconnector
2	Design code
3	Rated operational current: 160A,250A,400A,630A
4	Number of poles: 3-pole
5	"0" indicates non-contact-signal-device type "1" indicates contact-signal-device type

product Display

Technical Parameters

Switch-fuse coordination

Conventional free-air thermal current (A)	Associated fuse-links	Rated voltage (A)	Fuse element current rating (A)
160	NT00	400	4,6,10,16,20,25,32,40,50,63,80,100,125,160
160	NT00	600	4,6,10,16,20,25,32,40,50,63,80,100
250	NT1	400	80,100,125,160,200,224,250
250	NT1	600	80,100,125,160,200
400	NT2	400	125,160,200,224,250,300,355,400
400	NT2	600	125,160,200,224,250,300,315
630	NT3	400	315,355,400,425,500,630
630	NT3	600	315,355,400,425

Key Technical Parameters of Switches

Model (number)			HR6-160	HR6-250	HR6-400	HR6-630
Rated insulation voltage (V)			660	660	660	660
Rated thermal current (A)			100	250	400	630
Rated operational current (A)	400V		160	250	400	630
Rated operational current (A)	660V		100	200	315	425
Rated making capacity & Rated breaking capacity (A) (1005Ue/time)	400V,COSΦ=0.35 AC-23B	Making	1280	2000	3200	5040
	400V,COSΦ=0.35 AC-23B	Breaking	960	1500	2400	3780
	660V,COSΦ=0.65 AC-22B	Making	480	750	1200	1890
	660V,COSΦ=0.65 AC-22B	Breaking	480	750	1200	1890
Rated short-circuit breaking current (kA)			50	50	50	50
Maximum prospective peak current (kA)			100	100	100	100
Pollution degree			3	3	3	3
Installation category			Ⅲ	Ⅲ	Ⅱ	Ⅱ

The auxiliary switch has a rated voltage of 400V AC, a conventional heating current of 6A, an utilization category of AC-15,and a rated control capacity of 300VA.

Outline and Installation Dimension

Model Number	Overall Dimensions(mm)					Mounting Dimensions(mm)
Model Number	A	B	C	D	E	a	b	c	d	Φe	Φf
HR6-160/30	134	215	142	245	40	80	198	80	40	Φ6.5	Φ6.5
HR6-250/30	184	280	162	320	60	120	260	120	60	Φ8.5	Φ8.5
HR6-400/30	220	300	194	360	72	144	280	144	60	Φ8.5	Φ8.5
HR6-630/30	244	300	194	360	80	160	280	160	60	Φ8.5	Φ8.5