Wholesale HR6 Industrial Fused Knife Disconnect Switch Manufacturer, Company

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 Description

Type and Meaning

HR3-10
1Fuse-disconnector
2Design code
3Rated operational current: 160A, 250A, 400A, 630A
4Number 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-linksRated voltage (A)Fuse element current rating (A)
160NT004004, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160
6004, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100
250NT140080, 100, 125, 160, 200, 224, 250
60080, 100, 125, 160, 200

Key Technical Parameters of Switches

Model (number)HR6-160HR6-250HR6-400HR6-630
Rated insulation voltage (V)660660660660
Rated thermal current (A)100250400630
Rated operational current (400V)160250400630
Rated operational current (660V)100200315425
Rated short-circuit breaking current (kA)50505050

Outline and Installation Dimension

HR3 Installation Drawing
Model NumberA (mm)B (mm)C (mm)D (mm)
HR6-160/30134215142245
HR6-250/30184280162320
HR6-400/30220300194360
HR6-630/30244300194360

Frequently Asked Questions

1. What is the primary function of the HR6 series?

The HR6 series is a high-performance fuse-disconnector designed for secure power switching and circuit protection.

2. What current ranges are available for the HR6 series?

The series supports rated operational currents ranging from 160A up to 630A to suit different industrial requirements.

3. What is the difference between signal device types?

"0" indicates a non-contact-signal-device type, while "1" indicates a contact-signal-device type for monitoring purposes.

4. What is the rated insulation voltage for these switches?

The rated insulation voltage for the entire HR6 series is 660V.

5. Are these switches suitable for 3-pole applications?

Yes, the standard configuration for the HR6 fuse-disconnector is 3-pole.

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