Why Choose the Mersen 4P40 Fourth-Pole Switch Accessory?
The Mersen 4P40 is a dedicated fourth-pole accessory designed for compatible Mersen non-fusible disconnect switches. It provides an additional switched power pole, allowing a suitable three-pole switch assembly to be configured for four-pole operation in industrial control and electrical distribution applications.
The accessory is listed for use with compatible Mersen M163, M253 and M403 disconnect switches. It operates mechanically with the main switch mechanism so that the additional pole changes state alongside the three primary poles, providing coordinated switching within the complete disconnect assembly.
With a general-use rating of 40 A at 600 V AC, the Mersen 4P40 is suitable for industrial machinery, control panels, distribution equipment and OEM switchgear. Its compact modular construction and screw terminals support secure installation within compatible electrical assemblies.
Key Advantages
- Adds a fourth switched power pole to compatible Mersen disconnect switches.
- 40 A general-use current rating.
- 600 V AC rated voltage for industrial electrical systems.
- Mechanically coordinated with the main disconnect-switch mechanism.
- Compact modular construction for panel and switchboard installation.
- Accepts a broad range of copper conductor sizes.
Key Features
- Mersen 4P40 fourth-pole accessory.
- Compatible with Mersen M163, M253 and M403 switch models.
- Provides one additional switched power pole.
- 40 A general-use rating.
- 600 V AC rated voltage.
- Screw-terminal conductor connections.
- Suitable for conductors from 0.75 to 10 mm².
- Compatible with conductor sizes from 18 to 8 AWG.
- Compact accessory for compatible disconnect-switch assemblies.
Flexible Four-Pole Switching for Industrial Systems
A fourth-pole accessory enables an additional conductor to be switched simultaneously with the three main poles of a compatible disconnect switch. This can support system designs requiring four switched conductors within machinery, control-panel or electrical-distribution applications.
The Mersen 4P40 is designed to operate as part of a complete compatible switch assembly and is not a standalone disconnect switch. Installation should be completed in accordance with the Mersen instructions, applicable electrical regulations and the requirements of the finished equipment.
Typical Applications
- Four-pole industrial switching assemblies.
- Industrial control panels.
- Machinery disconnect systems.
- Electrical distribution equipment.
- OEM switchgear and control assemblies.
- Commercial and industrial electrical installations.
