Wholesale HR6 Industrial Fused Knife Disconnect Switch Suppliers, Factories

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Wholesale HR6 Industrial Fused Knife Disconnect Switch Suppliers, Factories

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.

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Product Description

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

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Technical Parameters

Switch-fuse Coordination

Conventional Free-air Thermal Current (A)	Associated Fuse-links	Rated Voltage (V)	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 Dimensions

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

Frequently Asked Questions (FAQ)

What are the available rated currents for the HR6 series fuse-disconnector?

The HR6 series offers four primary rated operational current configurations: 160A, 250A, 400A, and 630A.

What is the difference between designation codes "0" and "1"?

In the model naming structure, "0" indicates a non-contact-signal-device type, whereas "1" designates a model equipped with an auxiliary contact-signal-device.

Which fuse-link types are compatible with each model?

The series is compatible with standard NT series fuse links: HR6-160 utilizes NT00, HR6-250 uses NT1, HR6-400 uses NT2, and HR6-630 requires NT3 fuse-links.

What is the rated short-circuit breaking current for these disconnectors?

Across all model sizes (HR6-160 through HR6-630), the rated short-circuit breaking current is 50kA, with a maximum prospective peak current capacity of 100kA.

What are the operational parameters of the built-in auxiliary switch?

The auxiliary switch is rated for 400V AC with a conventional thermal heating current of 6A, falling under utilization category AC-15 with a 300VA rated control capacity.

Wholesale HR6 Industrial Fused Knife Disconnect Switch Suppliers, Factories

Product Description

Type and Meaning

Product Display

Technical Parameters

Outline and Installation Dimensions

Frequently Asked Questions (FAQ)

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