Why Choose the Mersen SA250 Selector Handle Shaft?
The Mersen SA250 is a durable selector handle operating shaft designed for compatible Mersen low voltage disconnect switch assemblies. Featuring a 6 × 6 mm square profile and an overall length of 250 mm, it provides the mechanical connection between an enclosure-mounted operating handle and the disconnect switch mechanism installed inside the panel.
The SA250 enables a compatible disconnect switch to be operated safely from outside an electrical enclosure. Its square shaft construction provides positive engagement with the associated handle and switch mechanism, ensuring dependable transfer of rotational movement during switching and electrical isolation.
With its extended 250 mm shaft length, the SA250 is particularly suitable for deep control cabinets or installations where the switch is positioned further from the enclosure door. It is compatible with selected 30 to 200 A panel-mounted and door-mounted disconnect switches and is supplied as an individual shaft accessory.
Key Advantages
- Purpose-designed operating shaft for Mersen disconnect switches.
- 6 × 6 mm square profile for secure mechanical engagement.
- 250 mm overall length for deep enclosure installations.
- Suitable for selected 30 to 200 A disconnect switches.
- Enables safe external operation of an internally mounted switch.
- Supports compatible door-interlocked isolation arrangements.
Key Features
- Mersen disconnect switch operating accessory.
- Rotary selector handle shaft.
- 6 × 6 mm square shaft section.
- 250 mm overall shaft length.
- Compatible with selected panel-mounted and door-mounted switches.
- Suitable for selected Mersen 30 to 200 A disconnects.
- Iron and zinc construction for industrial durability.
- Supplied as an individual operating shaft.
Reliable External Operation for Deep Electrical Enclosures
The Mersen SA250 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 enclosure during normal operation.
The end of the shaft works with the compatible operating handle and switch mechanism to support a door-interlocking arrangement. This helps prevent the enclosure door from being opened while the disconnect switch remains in the ON position, improving operational safety and equipment isolation.
Typical Applications
- Deep industrial control panels.
- OEM machinery disconnect systems.
- Motor control centres.
- Electrical distribution enclosures.
- Industrial automation equipment.
- Panel-mounted and door-mounted isolation switches.
