Mersen SA85 selector handle operating shaft featuring a 6 x 6 mm square profile and 85 mm length for compatible UL508 non-fusible disconnect switch assemblies.
£4.14
The Mersen SA85 is a compact selector handle operating shaft designed for compatible Mersen UL508 non-fusible disconnect switch assemblies. Featuring a 6 × 6 mm square profile and an overall length of 85 mm, it provides the mechanical connection between an enclosure-mounted operating handle and the disconnect switch mechanism inside the panel.
The SA85 enables authorised personnel to operate a compatible disconnect switch safely from outside an electrical enclosure. Its square shaft construction provides positive engagement with the external handle and internal switch mechanism, supporting reliable transfer of rotational movement during switching and isolation.
With its compact 85 mm shaft length, the SA85 is particularly suitable for shallow control panels and installations where the disconnect switch is positioned close to the enclosure door. It is supplied as an individual shaft accessory and must be combined with a compatible Mersen switch and selector handle.
The Mersen SA85 transfers the rotational movement of an externally mounted selector handle to a compatible disconnect switch located inside an electrical enclosure. This allows machinery and electrical equipment to be switched or isolated without opening the panel during normal operation.
When installed with the correct Mersen handle and switch mechanism, the shaft can form part of a door-interlocked operating arrangement. This helps prevent the enclosure door from being opened while the disconnect switch remains in the ON position. Compatibility and enclosure depth should be confirmed before installation.
| Manufacturer | Mersen |
|---|---|
| Model | SA85 |
| Product type | Selector handle operating shaft |
| Accessory type | Disconnect switch shaft |
| Shaft profile | Square |
| Shaft dimensions | 6 × 6 mm |
| Shaft length | 85 mm |
| Compatible equipment | Selected Mersen UL508 non-fusible disconnect switches |
| Accessory function | Handle-to-switch mechanical connection |
| Supplied as | Shaft only |
The SA85 connects a compatible external selector handle to a Mersen disconnect switch mounted inside an electrical enclosure.
The shaft has a 6 × 6 mm square profile and an overall length of 85 mm.
The compact shaft is suitable for shallow enclosures or installations where the disconnect switch is positioned close to the panel door.
No. The SA85 is supplied as a shaft only. The compatible disconnect switch and external operating handle must be selected separately.
Yes. When used with compatible Mersen components, the shaft can form part of an arrangement designed to help prevent the enclosure door from opening while the switch is in the ON position.
Mersen disconnect switch accessories are used by panel builders, OEM manufacturers and electrical engineers to create dependable external operating systems for industrial machinery, automation equipment and electrical control panels.
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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...