Merten 317400 System M Changeover Switch Insert, 2-Pole, 10 AX, 250 V, Flush-Mount, Screw Terminals, Halogen-Free

The Merten 317400 switch insert stands apart from standard changeover switches by delivering a 2-pole switching function in a compact, halogen-free thermoplastic housing. Engineered for the System M design line, it pairs seamlessly with M-Smart, M-Plan, and M-Pure rockers and frames, giving installers flexibility without compromising on safety or durability.

Highlights

• Changeover switch (SPDT) with 2-pole configuration for versatile control
• Rated at 10 AX, 250 V AC – suitable for resistive and inductive loads
• Flush-mounted insert with screw terminals for rigid conductors up to 2.5 mm²
• Halogen-free thermoplastic housing, IP20 protection, VDE certified
• Mechanical endurance over 50,000 switching cycles
• Compatible with Merten System M rockers and frames (sold separately)

In daily use

Installed behind a matching System M rocker, this insert provides reliable switching for lighting circuits, staircases, or any application requiring a changeover function. The screw terminals accept rigid conductors from 1.5 to 2.5 mm², ensuring a secure connection. Its compact depth of approximately 24 mm fits standard flush-mounted boxes, while the operating temperature range of -5 to +40 °C covers typical indoor environments.

Full specifications

• Product type: Switch insert
• Switching function: Changeover switch (SPDT)
• Number of poles: 2
• Rated current: 10 AX
• Rated voltage: 250 V AC
• Mounting type: Flush-mounted
• Connection type: Screw terminals
• Terminal capacity: 1.5 - 2.5 mm² (rigid conductors)
• Housing material: Thermoplastic, halogen-free
• Protection class: IP20
• Ambient temperature (operation): -5 to +40 °C
• Storage/transport temperature: -25 to +55 °C
• Mechanical switching cycles: > 50,000
• Installation depth: approx. 24 mm
• Certification: VDE
• Design line: Merten System M (M-Smart, M-Plan, M-Pure)
• Required accessories: Rocker/cover, frame (sold separately)
• Internal colour: Black/Grey

Final note

For a dependable changeover switch that integrates effortlessly with the Merten System M range, the 317400 insert offers the right balance of performance, safety, and design flexibility.