Dimmer switch busch jaeger 6523 U-102 — mountable rotary dimmer, 230 V, 50–60 Hz, max 100 W, black

Busch‑Jaeger 6523 U‑102 is a mountable rotary dimmer for 230 V AC lighting circuits. It is designed for two‑way installations and allows smooth manual adjustment of light level via a rotary control and two‑way switch. The device supports 2‑wire connection (neutral not required) and is optimised for dimming retrofit LED lamps (LEDi) as well as conventional incandescent and halogen loads.

Advantages

The dimmer offers adjustable minimum brightness, selectable leading‑edge or trailing‑edge control via a mode switch, and low operating noise thanks to MOSFET transistors. It includes electronic short‑circuit and overload protection, a terminal for net disconnection devices and is compatible with both conventional and electronic transformers. The compact unit fits standard flush‑mounting boxes and does not require a neutral conductor.

Suitable for

• Dimmable retrofit LED lamps (LEDi)
• Incandescent lamps and 230 V tungsten halogen lamps
• Low‑voltage halogen lamps with conventional or electronic transformers
• Mixed operation of LEDi with conventional loads
• 1‑gang 2‑way installations

Key specifications

• Rated voltage: 230 V~ (+10% / −10%)
• Rated frequency: 50–60 Hz
• Nominal power (retrofit LED loads): 2–100 W/VA
• Nominal power (non‑LED loads): 10–250 W/VA
• Connection: 2‑wire (no neutral required)
• Protection class (device): IP20
• Operating temperature: 0 °C to 35 °C
• Included: neon lamp for indication (with cover plate)

How to use

Install the dimmer into a standard flush‑mounting box (DIN 49073‑1) or compatible Busch‑Jaeger wallbox (3040/3050/3060) following local electrical codes. Connect live and switched live conductors using the provided terminals; neutral conductor is not required. Use the rotary knob for continuous dimming and the two‑way switch for on/off control. Select leading‑edge or trailing‑edge mode with the mode switch depending on the lamp type and transformer used. Adjust the minimum brightness setting if required to prevent flicker at low levels.

Usage recommendations

Account for transformer losses when using low‑voltage lamps: approximately 20% for conventional transformers and about 5% for electronic transformers. Ensure compatibility of retrofit LED lamps with trailing‑edge or leading‑edge control as appropriate and observe the nominal power ranges to avoid overload.