The Sunricher SR-2303AC-4CH-DIN is a versatile 4-channel DALI-2 phase-cut dimmer designed for controlling mains-powered lighting loads directly from a DALI system. Built for DIN rail installation, it provides a simple and reliable way to integrate phase-dimmable LED, halogen, and incandescent fixtures into modern lighting control systems.

With four independently controllable channels, the unit can be addressed as 1–4 DALI devices, allowing flexible configuration for both grouped and individual control. A built-in digital display and onboard controls make commissioning quick and straightforward, while push-dim capability ensures it can also operate without a full DALI system where required.

Using trailing-edge (reverse phase) dimming, the SR-2303AC-4CH-DIN is ideal for today’s LED loads, delivering smooth dimming performance and improved compatibility. Features like adjustable minimum brightness help eliminate flicker at low levels, making it a practical solution for architectural, commercial, and retrofit applications.

Key Features

4-channel DALI-2 (DT6) phase-cut dimmer
Trailing edge (reverse phase) dimming for LED compatibility
100–240VAC input and output
1.8A per channel (up to 400W per channel @ 240V)
Configurable as 1–4 DALI addresses
Push-dim input for standalone operation
Digital display for easy addressing and setup
Adjustable minimum brightness to prevent flicker
Suitable for LED, incandescent, and halogen loads
DIN rail mount (35mm)
Full isolation design

Technical Specifications

Electrical

Input Voltage: 100–240VAC
Output Voltage: 4 × 100–240VAC
Channels: 4
Max Current: 4 × 1.8A
Max Load Power:
- 4 × 400W @ 240V
- 4 × 200W @ 110V
Dimming Type: Trailing edge (reverse phase)
DALI Consumption: <2mA

Control

Protocol: DALI-2 (DT6)
Addressing: 1–4 addresses configurable
Control Modes:
- DALI control
- Push-dim (switch input)
Channel Control: Independent or synchronous

Compatibility

Dimmable LED lamps
Phase-dimmable LED drivers
Incandescent & halogen lighting
Resistive and capacitive loads

Physical

Mounting: DIN rail (35mm)
Dimensions: 145.9 × 90 × 66.4 mm
IP Rating: IP20
Operating Temperature: -20°C to +45°C

Compliance

DALI-2 certified
IEC 62386 compliant

Typical Applications

Retrofitting DALI control onto mains-dimmable lighting
Commercial and architectural lighting systems
Switchboard-based lighting control (DIN rail installs)
Projects requiring hybrid DALI + local switching (push-dim)

Short Description: A flexible 4-channel DALI-2 DIN rail dimmer for controlling mains LED and traditional lighting loads, with smooth trailing-edge dimming and simple commissioning.