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MERSEN FUSE Fourth Fusable pole for M250D 4PD250
Mersen 4PD250 fourth fusible pole accessory designed for the Mersen M250D 250 A fusible disconnect switch, enabling a compatible four-pole isolation assembly.
£216.15
Why Choose the Mersen 4PD250 Fourth Fusible Pole?
The Mersen 4PD250 is a genuine fourth fusible pole accessory designed specifically for the Mersen M250D fusible disconnect switch. It enables a compatible three-pole M250D switch to be expanded into a four-pole configuration, providing switched and fuse-protected isolation for an additional conductor.
Engineered for direct integration with compatible Mersen switchgear, the 4PD250 helps panel builders and electrical engineers create a coordinated four-pole disconnect assembly without replacing the complete switch. Its purpose-designed construction supports dependable mechanical switching and reliable circuit isolation in demanding electrical distribution applications.
The Mersen 4PD250 is suitable for industrial control panels, distribution boards, machinery and other installations where a fourth fusible pole is required. As an original Mersen accessory, it provides the correct fit and operating compatibility for the associated M250D disconnect switch platform.
Key Advantages
- Genuine Mersen fourth fusible pole accessory.
- Designed specifically for the Mersen M250D disconnect switch.
- Expands a compatible three-pole switch into a four-pole assembly.
- Provides fuse accommodation and switching for an additional conductor.
- Purpose-built design supports correct mechanical integration.
- Suitable for industrial power distribution and isolation systems.
Key Features
- Mersen disconnect switch accessory range.
- Fourth fusible pole configuration.
- Compatible with the M250D fusible disconnect switch.
- Designed for the M250D 250 A switch frame.
- Supports coordinated four-pole switching and isolation.
- Industrial-grade construction for dependable service.
- Direct integration with the compatible switch mechanism.
- Suitable for panel-mounted electrical assemblies.
Reliable Four-Pole Fusible Isolation
A fourth fusible pole may be required where an additional conductor must be switched and protected together with the main phase conductors. The Mersen 4PD250 provides this functionality as part of a compatible M250D disconnect switch assembly, supporting coordinated operation across all four poles.
Using a manufacturer-approved accessory helps maintain correct alignment, switching performance and mechanical compatibility. The 4PD250 is therefore a practical choice for panel builders and engineers configuring Mersen fusible disconnect switches for specialised distribution and machinery applications.
Typical Applications
- Industrial power distribution panels.
- Electrical switchboards and control cabinets.
- Motor control centres.
- OEM machinery and production equipment.
- Commercial electrical distribution systems.
- Four-pole fused isolation assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Accessory | |
|---|---|---|
| Manufacturer | Mersen | |
| Model | 4PD250 | |
| Product type | Fourth fusible pole accessory | |
| Compatible switch | Mersen M250D | |
| Compatible switch class | 250 A | |
| Pole function | Additional fourth switched and fusible pole | |
| Switch type | Fusible disconnect switch | |
| Application | Three-pole to four-pole switch expansion | |
| Mounting | Direct installation on compatible switch assembly | |
| Installation environment | Electrical panel or switchboard |
Frequently Asked Questions
What is the Mersen 4PD250 used for?
The Mersen 4PD250 is used to add a fourth fusible pole to a compatible Mersen M250D fusible disconnect switch.
Which disconnect switch is compatible with the 4PD250?
The 4PD250 is specifically designed for use with the Mersen M250D fusible disconnect switch.
Is the Mersen 4PD250 a complete disconnect switch?
No. It is an accessory that adds a fourth fusible pole to a compatible M250D switch assembly. The main disconnect switch is supplied separately.
Does the fourth pole provide fuse accommodation?
Yes. The 4PD250 is a fusible pole designed to provide switching and fuse accommodation for the additional conductor.
Where is the Mersen 4PD250 typically installed?
It is typically installed with an M250D switch inside an industrial control panel, switchboard, motor control centre or machinery electrical cabinet.
Trusted by Panel Builders Worldwide
Mersen disconnect switches and accessories are widely specified by panel builders, electrical engineers and OEM manufacturers for dependable circuit isolation, coordinated protection and reliable operation in industrial power distribution systems.
