LV 400a j fuse pole mounted fuse cutout

LV 400A HRC Overhead Service Cut-out Transformer Fuse Cutout

Product Overview

The LV 400A HRC Overhead Service Cut-out Transformer Fuse Cutout is a heavy-duty low-voltage fuse protection device designed for overhead electrical distribution networks, transformer secondary protection, and service connection applications. With a 415V rated voltage and 400A rated current, it provides reliable protection against overloads and short-circuit faults in low-voltage distribution systems.

The fused cut-out is designed to accommodate BS88 J-type wedge fuse links, providing a practical and robust solution for pole-mounted transformer and overhead service applications. Its molded glass-reinforced polyester DMC or nylon housing offers excellent mechanical strength, electrical insulation, and resistance to outdoor operating conditions.

The 400A pole-mounted fuse cutout is suitable for both PME (Protective Multiple Earthing) and SNE (Separate Neutral Earth) applications. A detachable cable trough, multiple cable entry options, shrouded incoming connections, and optional mechanical connectors make the unit suitable for a wide range of utility and electrical distribution requirements.

Key Features

• 400A rated current for high-capacity LV distribution applications

• 415V rated voltage for low-voltage overhead networks

• Designed for BS88 J-type wedge fuse links

• Suitable for transformer secondary and overhead service protection

• Heavy-duty glass-reinforced polyester DMC housing

• Copper, tinned copper, or silver-plated copper alloy contacts

• 82.5 mm fuse fixing centers for J-type fuse links

• Supports cable sizes up to 300 mm²

• Lift-off cover with security sealing facilities

• Detachable two-part cable trough

• Multiple cable entry configurations

• Optional shear-head mechanical connectors

• Suitable for PME and SNE earthing systems

• Optional top plate adaptor for connection to metering cabinets

• Designed for outdoor pole-mounted applications

Main Technical Parameters

Applicable Standards

The LV 400A HRC overhead service cut-out is designed with reference to the following standards:

• ESI 12-20

• BS 88 Part 1: 1975

• IEC 947-3

• BS 88-2

• IEC 60269-2-1

The applicable standard and exact configuration can be customized according to the requirements of the distribution utility, transformer manufacturer, contractor, or project specification.

J-Type HRC Fuse Link

This fused cut-out is designed to accommodate standard J-type wedge fuse links used for low-voltage distribution protection.

The J-type fuse link provides high-speed fault interruption and is suitable for protecting transformers, cables, overhead service connections, and other LV distribution equipment.

J-Type Fuse Link Specifications

Note: The actual fuse-link rating should be selected according to the protected transformer, cable, service load, and applicable protection coordination requirements.

400A Pole-Mounted Fused Cut-out

The 400A pole-mounted fused cut-out is molded from light-grey, glass-reinforced polyester DMC to provide a strong and electrically insulated enclosure for outdoor distribution applications.

The unit accepts BS88 J-type fuse links on the phases and uses fuse carriers with approximately 82 mm fixing centers.

A lift-off cover with security sealing facilities allows authorized personnel to access the fuse carriers while helping prevent unauthorized operation.

Main Construction Features

1. Molded light-grey glass-reinforced polyester DMC enclosure.

2. Rated current up to 400A.

3. Accepts BS88 J-type fuse links on phases.

4. Fuse carriers with 82 mm fixing centers.

5. Lift-off cover with security sealing facilities.

6. Two-part detachable cable trough.

7. Suitable for cable sizes up to 300 mm².

8. Three cable-entry positions.

9. Cable entry can use brass glands or PVC grommets.

10. Cable exit can be equipped with wooden or closed-cell foam cable bushes.

11. Optional shear-head mechanical connectors for incoming or outgoing terminals.

12. Variable neutral/earth termination configurations.

13. Incoming connections can remain insulated or shrouded while outgoing connections are being terminated.

14. Cable terminations are manufactured from hard-drawn copper.

15. Suitable for both PME and SNE applications.

16. Optional top plate adaptor for connection to a metering cabinet.

Heavy-Duty Cut-out GF200

The GF200 heavy-duty cut-out configuration is designed for applications requiring robust mechanical construction and high-current LV service protection.

With a 400A current rating, it can be used on the phase conductors of transformer and overhead service installations. The design provides convenient access for fuse replacement and cable termination while maintaining appropriate insulation and protection around energized components.

The two-part detachable cable trough provides additional installation flexibility, while multiple cable-entry positions allow the cut-out to accommodate different site wiring arrangements.

Optional shear-head mechanical connectors can simplify field installation and provide a reliable connection without requiring specialized crimping equipment.

Materials and Construction

Housing

The enclosure is manufactured from glass-reinforced polyester DMC or nylon, providing:

• High mechanical strength

• Excellent electrical insulation

• Good dimensional stability

• Resistance to outdoor environmental conditions

• Suitable performance for utility distribution equipment

The light-grey molded enclosure is designed for practical outdoor installation on poles and transformer structures.

Contacts

The main contact system can be supplied in different material configurations depending on the application:

• Copper

• Bright tinned copper

• Copper alloy with silver plating

These contact options provide good electrical conductivity and reliable connection performance.

Cable Terminations

Hard-drawn copper is used for cable termination components. Different neutral and earth termination arrangements can be provided according to the requirements of the electrical distribution system.

Cable Entry and Termination

The cut-out provides flexible cable termination arrangements for different installation requirements.

The design supports:

• Cable sizes up to 300 mm²

• Three cable-entry positions

• Brass gland cable entry

• PVC grommet cable entry

• Wooden cable bushes

• Closed-cell foam cable bushes

• Optional shear-head mechanical connectors

• Different neutral and earth termination solutions

Incoming connections can be insulated or shrouded while outgoing cable connections are being terminated, helping improve installation safety and convenience.

Applications

The LV 400A HRC overhead service cut-out is suitable for a variety of low-voltage electrical distribution applications, including:

Pole-Mounted Transformer Protection

Installed on the LV side of a distribution transformer to provide fuse-based protection against overload and short-circuit conditions.

Overhead Service Connections

Used in overhead low-voltage distribution networks to protect service connections and provide a convenient point for fuse isolation.

Utility Distribution Networks

Suitable for electrical utilities and distribution contractors requiring robust pole-mounted LV protection equipment.

Commercial and Industrial Distribution

Can be used for high-current service connections and transformer-fed LV distribution systems.

Metering Installations

An optional top plate adaptor allows the cut-out to be integrated with suitable metering cabinet arrangements.

Typical Applications

Distribution Transformer → 400A HRC Fuse Cut-out → LV Distribution Network

The cut-out can be installed between the transformer secondary output and the downstream LV distribution system. The J-type HRC fuse link provides overcurrent and short-circuit protection while allowing the circuit to be isolated when required.

Installation and Maintenance

Before installation, verify the following:

• Rated voltage is suitable for the electrical system.

• Fuse-link rating is correctly selected for the transformer and downstream circuit.

• Cable cross-section is compatible with the terminal arrangement.

• Fuse fixing centers match the selected J-type fuse link.

• Neutral and earth connections comply with the project requirements.

• Pole mounting hardware is correctly installed and tightened.

• All cable glands, bushes, and shrouds are correctly fitted.

• Electrical connections are properly torqued according to the applicable installation requirements.

For maintenance, the fuse link, contact surfaces, cable terminations, housing, and mechanical fixing points should be inspected periodically. Any damaged fuse carrier, enclosure, terminal, or insulation component should be replaced before the equipment is returned to service.

Why Choose Our 400A HRC Fuse Cut-out?

High-Current LV Protection

With a 400A rated current, the unit is designed for high-capacity low-voltage distribution and transformer secondary applications.

J-Type Fuse Compatibility

The cut-out accepts widely used BS88 J-type wedge fuse links, making it easier to select and replace compatible protection components.

Robust Outdoor Construction

The glass-reinforced polyester DMC housing provides a strong and electrically insulated enclosure for pole-mounted applications.

Flexible Cable Configuration

Multiple cable-entry and termination options allow the product to be adapted to different distribution network designs.

PME and SNE Compatibility

The neutral and earth termination system can be configured for both PME and SNE applications according to project requirements.

Utility-Oriented Design

The product is designed for practical installation, maintenance, sealing, cable termination, and fuse replacement in electrical distribution systems.

Product Dimensions

The standard maximum overall dimensions are:

• Height: ≤300 mm

• Width: ≤400 mm

• Depth: ≤120 mm

• J-Type Fuse Fixing Centre: 82.5 mm

Actual dimensions may vary according to the selected fuse carrier, terminal configuration, cable arrangement, and customized options.

Packaging

Each LV 400A HRC overhead service cut-out is individually protected with a foam box to reduce the risk of damage during transportation.

Standard packing configuration:

• 1 unit per foam box

• 8 foam boxes per carton

• Carton size: 53.3 × 44.3 × 38.5 cm

• Gross Weight: 16.8 kg/carton

• Net Weight: 15.8 kg/carton

Customized packaging, labeling, and export packing can be provided for bulk orders and OEM projects.

OEM and Customization

As a manufacturer of electrical distribution equipment, we can provide customized configurations according to your technical specifications.

Available options may include:

• Housing material

• Contact material

• Fuse carrier configuration

• Neutral/earth termination arrangement

• Cable entry configuration

• Mechanical connectors

• Cable bushes

• Metering cabinet adaptor

• Product marking and nameplate

• Packaging and labeling

For utility tenders, transformer projects, and bulk procurement, please provide the required rated voltage, rated current, fuse type, cable size, mounting arrangement, and applicable standard so that we can confirm the correct configuration.

Frequently Asked Questions

1. What is a 400A HRC overhead service cut-out?

A 400A HRC overhead service cut-out is a low-voltage fuse protection device used in overhead electrical distribution systems. It can protect distribution transformers, service cables, and downstream LV circuits against excessive current and short-circuit faults.

2. What voltage is the 400A fuse cut-out rated for?

The standard configuration is rated at 415V AC. Configurations for different voltage requirements can be discussed according to the project specification.

3. What type of fuse does this cut-out use?

The cut-out is designed to accommodate J-type wedge fuse links, including compatible BS88 and IEC 60269 fuse-link configurations.

4. What is the rated current?

The cut-out has a rated current of 400A. The actual fuse-link rating should be selected according to the protected equipment and electrical system.

5. Can it be used with a distribution transformer?

Yes. The 400A HRC fuse cut-out is suitable for LV-side protection of pole-mounted distribution transformers, subject to correct fuse and cable selection.

6. Is the cut-out suitable for outdoor installation?

Yes. Its glass-reinforced polyester DMC or nylon housing is designed for outdoor distribution applications, including pole-mounted installations.

7. What is the maximum cable size?

The heavy-duty GF200 configuration supports cable sizes up to approximately 300 mm², depending on the selected terminal configuration.

8. Is it suitable for PME and SNE systems?

Yes. Different neutral and earth termination solutions can be provided to suit PME and SNE electrical distribution systems.

9. What are the fuse fixing centers?

The specified J-type fuse fixing center is 82.5 mm. The actual compatible fuse carrier configuration should be confirmed before ordering.

10. Can the 400A fuse cut-out be customized?

Yes. Terminal arrangements, contact materials, cable entry options, neutral/earth configurations, mechanical connectors, metering cabinet adaptors, labeling, and packaging can be customized for OEM and project requirements.

Request a Quote

Looking for a 400A HRC overhead service cut-out, pole-mounted transformer fuse cutout, or BS88 J-type fuse cut-out for your LV distribution project?

Send us your required voltage, current rating, fuse-link type, cable size, mounting arrangement, quantity, and applicable standard. Our engineers can confirm the suitable configuration and provide a technical quotation for your project.