Mersen HDF400T direct-mount butterfly operating handle designed for compatible Mersen SF 400 A fusible disconnect switches used in industrial power distribution equipment.
£130.53
The Mersen HDF400T is a robust direct-mount butterfly operating handle designed for use with compatible Mersen SF 400 A fusible disconnect switches. It provides a practical manual interface for operating the connected switch in industrial control panels, switchboards and electrical power distribution equipment.
Manufactured as part of Mersen’s low-voltage disconnect switch accessory range, the HDF400T mounts directly onto the compatible switch operating mechanism. Its butterfly-style design provides a secure grip for positive local operation, while the direct-mount arrangement offers a compact alternative to an extended shaft and separate enclosure-mounted handle.
The HDF400T is suitable for new switchgear assemblies, industrial machinery, OEM panel-building projects and replacement applications. Correct compatibility with the selected Mersen SF 400 A disconnect switch and installation arrangement should always be confirmed before fitting.
Fusible disconnect switches combine electrical isolation with fuse-based overcurrent protection. A correctly selected operating handle provides a controlled and repeatable means of moving the switch between its operating positions while keeping the operator separated from the internal switching components.
The direct-mount configuration of the Mersen HDF400T is intended for applications where the compatible disconnect switch is operated locally from the front of its mechanism. When correctly matched with a Mersen SF 400 A switch, it provides dependable manual operation for demanding industrial electrical systems.
| Current | 400 A |
|---|---|
| Manufacturer | Mersen |
| Model | HDF400T |
| Product type | Disconnect switch operating handle |
| Accessory type | Handle |
| Handle style | Butterfly |
| Handle type | Direct mount |
| Compatible switch series | Mersen SF |
| Compatible switch rating | 400 A |
| Compatible switch type | Fusible disconnect switch |
| Operating method | Manual |
| Mounting arrangement | Direct mounting to the compatible switch mechanism |
| Application | Low-voltage switching and electrical isolation |
| Accessory supplied | Operating handle |
| Disconnect switch included | No |
| Product status | Active |
The Mersen HDF400T is a direct-mount butterfly handle used to manually operate a compatible Mersen SF 400 A fusible disconnect switch.
No. The HDF400T is an operating handle accessory. The compatible fusible disconnect switch and required fuses must be selected separately.
The handle is designed for compatible Mersen SF-series fusible disconnect switches rated at 400 A. The exact switch configuration should be verified before installation.
Direct mount means the handle attaches directly to the compatible switch operating mechanism rather than connecting through an extended shaft to an enclosure door.
It is commonly used in industrial switchboards, control panels, motor control centres, machinery and electrical power distribution assemblies.
Mersen disconnect switch accessories are used by electrical engineers, machinery manufacturers and panel builders to support dependable switching and isolation in demanding industrial power systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...