Why Choose the Mersen SA120 Selector Handle Shaft?
The Mersen SA120 is a robust selector handle shaft designed for compatible Mersen low voltage disconnect switch operating systems. Featuring a 6 × 6 mm square profile and a length of 120 mm, it provides the mechanical connection between an enclosure-mounted selector handle and the disconnect switch mechanism inside the panel.
The shaft allows a compatible disconnect switch to be operated safely from outside an electrical enclosure. Its square construction provides positive engagement with the handle and switch mechanism, supporting reliable switching while helping prevent unwanted movement or slippage during operation.
Suitable for selected 30 to 200 A panel-mounted and door-mounted disconnect switches, the SA120 supports flexible installation across industrial control panels, machinery and electrical distribution equipment. The shaft is supplied separately, allowing it to be matched with the appropriate Mersen switch and external operating handle.
Key Advantages
- Purpose-designed shaft for compatible Mersen selector handles.
- 6 × 6 mm square profile for secure mechanical engagement.
- 120 mm shaft length for a range of enclosure depths.
- Supports selected 30 to 200 A disconnect switches.
- Enables safe external operation of an internally mounted switch.
- Durable metal construction for industrial panel applications.
Key Features
- Mersen disconnect switch operating accessory.
- Selector handle shaft.
- 6 × 6 mm square shaft section.
- 120 mm overall length.
- Suitable for selected panel-mounted and door-mounted switches.
- Compatible with selected Mersen 30 to 200 A disconnects.
- Iron and zinc construction.
- RoHS-compliant accessory.
Reliable External Operation for Disconnect Switches
The Mersen SA120 transfers rotational movement from an external selector handle to a compatible disconnect switch mounted inside an electrical enclosure. This enables authorised personnel to switch power on or off without opening the enclosure door during normal operation.
When used with compatible handle systems, the shaft also contributes to the door-interlocking arrangement, helping prevent the enclosure from being opened while the switch remains in the ON position. The correct shaft, handle and switch combination should always be confirmed before installation.
Typical Applications
- Industrial control panels.
- Machinery disconnect assemblies.
- Motor control centres.
- Electrical distribution enclosures.
- OEM automation equipment.
- Panel-mounted and door-mounted isolation switches.
