Description
The NT HRC Fuse Base series includes NT1, NT2 and NT3 models designed for compatible low-voltage fuse links in electrical distribution and circuit protection systems.
This version features a metal mounting plate, insulating terminal supports and fuse contact assemblies. Its mounting arrangement differs from other NT fuse base configurations, making it important to verify the installation dimensions and product number before ordering.
Available with rated currents of 250A, 400A and 630A, the series has a rated insulation voltage of 500/690V. It supports compatible RT16, NT and NH fuse links according to the selected model.
Key Features
- Available in NT1, NT2 and NT3 models
- Rated current options: 250A, 400A and 630A
- Rated insulation voltage: 500/690V
- Compatible with corresponding RT16, NT and NH fuse links
- Metal mounting plate with insulated terminal supports
- Metal fuse contact assemblies and bolted terminals
- Three size configurations for different installation requirements
- Suitable for compatible low-voltage distribution equipment
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | HRC Low Voltage Fuse Base |
| Models | NT1 / NT2 / NT3 |
| Product Numbers | 18039 / 18040 / 18041 |
| Rated Insulation Voltage | 500/690V |
| Rated Current | 250A / 400A / 630A |
| Compatible Fuse Link Series | RT16 / NT / NH |
| Mounting Structure | Metal base plate with fuse contact supports |
Model Specifications and Dimensions
| Parameter | NT1 | NT2 | NT3 |
|---|---|---|---|
| Product No. | 18039 | 18040 | 18041 |
| Compatible Fuse Links | RT16-1 / NT1 / NH1 | RT16-2 / NT2 / NH2 | RT16-3 / NT3 / NH3 |
| Rated Current | 250A | 400A | 630A |
| Rated Insulation Voltage | 500/690V | 500/690V | 500/690V |
| Dimension A | 175 mm | 200 mm | 210 mm |
| Dimension B | 200 mm | 230 mm | 250 mm |
| Dimension D | 50 mm | 64 mm | 64 mm |
| Dimension E | 30 mm | 30 mm | 30 mm |
| Dimension H | 82 mm | 104 mm | 120 mm |
All dimensions are in millimeters. Refer to the dimension drawing for the corresponding measurement positions.
Dimension Figure
The dimensional drawing illustrates the fuse base’s side and top views, including its terminal arrangement and mounting reference dimensions.
The NT1, NT2 and NT3 configurations have different overall dimensions. Buyers should confirm the corresponding product number and mounting requirements when selecting a fuse base.
Compatible Fuse Links
Each model supports its corresponding fuse link size:
- NT1: RT16-1, NT1 and NH1
- NT2: RT16-2, NT2 and NH2
- NT3: RT16-3, NT3 and NH3
Although these fuse links belong to related product families, their sizes and installation requirements differ. Confirm the correct combination before purchasing.
Applications
These NT HRC fuse bases can be used as components in compatible low-voltage electrical systems, including:
- Industrial power distribution panels
- Low-voltage switchgear assemblies
- Electrical distribution cabinets
- Industrial fuse protection installations
- Power distribution equipment
- Electrical control and protection assemblies
The selected fuse link must match the required electrical protection characteristics and the appropriate fuse base specification.
FAQ
What models are available in this NT HRC fuse base series?
The series includes NT1, NT2 and NT3, corresponding to product numbers 18039, 18040 and 18041.
What is the rated insulation voltage?
All three models have a rated insulation voltage of 500/690V.
Which fuse links are compatible?
NT1 supports RT16-1, NT1 and NH1 fuse links. NT2 supports RT16-2, NT2 and NH2. NT3 supports RT16-3, NT3 and NH3.
Do all three models have the same mounting dimensions?
No. Their dimensions differ. Refer to the model specification table and dimensional drawing when checking installation space.
How can I distinguish this version from other NT fuse bases?
Check the product number, mounting structure and dimensional drawing. Different NT fuse base designs may share compatible fuse link sizes while having different mounting arrangements.
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