Isolation switch Legrand FR304 4P 40A model 406486

Legrand FR304 4P 40A model 406486 is a four-pole manual isolation switch designed to provide a reliable way to disconnect electrical circuits. Intended for use in residential and commercial distribution boards, this isolation switch enables safe separation of live conductors for maintenance, testing, or emergency shutdowns. The device offers a compact form factor suitable for panel mounting and integration into control circuits where clear and visible isolation is required.

Advantages

The four-pole design ensures simultaneous disconnection of all phases and the neutral where required, reducing the risk of backfeed. Rated for 40 A continuous current, the switch is suitable for typical lighting, socket, and small motor circuits in homes and small businesses. Mechanical operation provides straightforward, tactile control and a visibly marked handle indicates position for enhanced safety during work on the installation.

Suitable for

• Isolation of distribution board circuits in residential buildings
• Disconnection of control circuits and small commercial installations
• Maintenance and testing where a clear manual break is needed
• Emergency shut-off applications requiring visible isolation

Key specifications

• Poles: 4 (four-pole configuration)
• Rated current: 40 A
• Mounting: panel/distribution board mounting
• Operation: manual mechanical handle with visible position indicator
• Function: main isolation / load disconnection

How to use

Install the isolation switch in the distribution board following applicable electrical standards and local regulations. Connect incoming and outgoing conductors to the appropriate terminals, ensuring tight and secure connections. To isolate the circuit, move the handle to the OFF position; to restore power, move it to the ON position. Verify the switch position visually and, if required, confirm absence of voltage with appropriate testing instruments before performing work on the circuit.

Usage recommendations

Use the Legrand FR304 4P 40A switch as part of a correctly rated electrical installation. Ensure that the switch's 40 A rating matches or exceeds the expected load. Carry out periodic inspections to confirm mechanical integrity and tightness of connections, and always follow local safety codes when performing installation or maintenance.