Description
The NH1 HRC Low Voltage Link is designed for overcurrent and short-circuit protection in compatible low-voltage electrical distribution systems. Its ceramic body and metal terminals support installation in compatible fuse assemblies.
With a rated voltage of 500/690 V and a rated current range of 32–250 A, the NH1 model is intended for industrial power distribution and electrical equipment protection applications. Select the appropriate rating according to the system voltage, operating current and protection coordination requirements.
Key Features
- Rated voltage of 500/690 V
- Rated current range of 32–250 A
- High breaking capacity under specified operating conditions
- Ceramic fuse body with metal terminals
- Designed for compatible NH fuse assemblies
- Suitable for industrial electrical distribution protection
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | NH1 HRC Low Voltage Link |
| Model | NH1 |
| Rated Voltage | 500/690 V |
| Rated Current | 32–250 A |
| Breaking Capacity at 500 V | 120 kA |
| Breaking Capacity at 690 V | 50 kA |
| Dimension A | 135 mm |
| Dimension C | 68 mm |
| Dimension D | 46 mm |
| Dimension E | 20 mm |
| Dimension H | 58.5 mm |
Dimension Figure
Other Available Models
The NH series includes additional models for different current ratings and installation dimensions.
| Model | Rated Current | Dimension A | Dimension C | Dimension D | Dimension E | Dimension H |
|---|---|---|---|---|---|---|
| NH1 | 32–250 A | 135 mm | 68 mm | 46 mm | 20 mm | 58.5 mm |
| NH2 | 80–400 A | 150 mm | 68 mm | 58 mm | 25 mm | 68.5 mm |
| NH3 | 160–630 A | 150 mm | 68 mm | 70 mm | 32 mm | 82 mm |
Applications
The NH1 HRC Low Voltage Link can be considered for compatible electrical protection applications, including:
- Low-voltage power distribution systems
- Industrial electrical equipment
- Overcurrent protection circuits
- Short-circuit protection arrangements
FAQ
What is the rated current range of the NH1 model?
The rated current range is 32–250 A. Select the appropriate rating according to the electrical circuit requirements.
What is the rated voltage?
The rated voltage is 500/690 V. Confirm the applicable system voltage before installation.
What is the breaking capacity?
The specified breaking capacity is 120 kA at 500 V and 50 kA at 690 V. Verify suitability for the prospective short-circuit current of the installation.
What are the dimensions of the NH1 fuse link?
The listed dimensions are A = 135 mm, C = 68 mm, D = 46 mm, E = 20 mm and H = 58.5 mm. Refer to the dimension drawing when checking installation compatibility.
What is the difference between NH1, NH2 and NH3?
The models differ in rated-current range and physical dimensions. NH1 is rated at 32–250 A, NH2 at 80–400 A and NH3 at 160–630 A. Check the required electrical rating and installation dimensions before selecting a model.
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