Surface-mounted 1-pole staircase switch ELEKTROPLAST HERMES 0331-09 black

Surface-mounted 1-pole staircase switch ELEKTROPLAST HERMES 0331-09 in black is a compact surface-mounted intermediate switch designed to control lighting circuits from two locations. Intended for standard residential and commercial applications, the switch features a single pole changeover contact and conventional screw-type wiring terminals that facilitate straightforward installation and routine service. The black finish provides a discreet appearance for visible surface mounting.

Advantages

The compact, surface-mounted design eliminates the need for flush mounting and reduces installation time in retrofits or where wall cavities are not accessible. A single pole changeover contact offers reliable switching between two control points, while standard wiring terminals ensure secure electrical connections compatible with common installation practices. The black color and minimal profile support unobtrusive integration into a variety of interior environments.

Suitable for

• Staircase lighting controlled from two locations
• Corridors and hallways in residential or commercial buildings
• Retrofit installations where flush mounting is impractical
• Surface-mounted conduit or trunking electrical systems

Key specifications

• Mounting type: surface-mounted
• Contact configuration: single pole changeover (intermediate)
• Color: black
• Connection type: screw-type wiring terminals
• Application: lighting circuits with two-location control
• Design: compact, low-profile housing for visible installation

How to use

Turn off power at the circuit breaker before starting installation. Mount the switch housing on a suitable flat surface and route wiring to the screw-type terminals following local electrical regulations and the building wiring diagram. Connect live and switched conductors to the designated terminals for intermediate switching; ensure all connections are tightened securely. After wiring, restore power and test the two-location switching function to confirm correct operation.

Usage recommendations

Use with compatible wiring sizes and protective devices as specified by local electrical codes. Periodically inspect terminal tightness and the mounting condition; disconnect power before performing maintenance. For installations in damp or outdoor-exposed locations, use additional protective enclosures rated for the environment.