Why Choose the Mersen SA85 Selector Handle Shaft?
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.
Key Advantages
- Purpose-designed operating shaft for Mersen disconnect switches.
- 6 × 6 mm square profile for secure mechanical engagement.
- 85 mm overall length for compact enclosure installations.
- Enables external operation of an internally mounted disconnect switch.
- Supports compatible door-interlocked isolation arrangements.
- Compact industrial design for machinery and control panels.
Key Features
- Mersen disconnect switch operating accessory.
- Selector handle shaft.
- 6 × 6 mm square shaft section.
- 85 mm overall shaft length.
- Designed for compatible UL508 non-fusible disconnect switches.
- Connects an external selector handle to the internal switch mechanism.
- Supports handle and enclosure-door interlocking when used with compatible components.
- Supplied as an individual shaft accessory.
Reliable External Operation for Compact Enclosures
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.
Typical Applications
- Compact industrial control panels.
- Shallow electrical enclosures.
- OEM machinery disconnect systems.
- Motor control equipment.
- Automation and manufacturing machinery.
- Panel-mounted electrical isolation assemblies.
