MEAN WELL WDR & TDR Series Wide-Input DIN Rail Power Supply
Complete Portfolio: 60W to 960W | 1-Phase & 3-Phase Ultra-Wide Input | Active PFC | High Efficiency
Engineered for Demanding Industrial Power Grids
The MEAN WELL WDR and TDR series are robust DIN rail power supplies specifically designed to conquer unstable or specialized heavy-industry power grids. Spanning from 60W to 960W, these units provide rock-solid DC output regardless of severe AC input fluctuations.
Core Series Distinctions
- WDR Series (Ultra-Wide Input): Designed to accept 1-phase or 2-phase inputs from a massive 180VAC to 550VAC. Ideal for facilities with varying grid voltages or unstable power lines.
- TDR Series (Three-Phase Input): Built for heavy industrial machinery, accepting 3-phase 340VAC to 550VAC inputs. Remarkably, they can continue to operate seamlessly on just 2 phases if a phase loss occurs.
- Slim Profile: Both series maintain an incredibly narrow width on the DIN rail, conserving vital space in crowded electrical cabinets.
- High Efficiency: Utilizing advanced topologies, these units reach up to 94.5% efficiency with built-in active Power Factor Correction (PFC) on higher wattage models.
WDR Series: 180~550VAC Ultra-Wide Input (60W ~ 480W)
The WDR series is the ultimate problem solver for unpredictable AC lines. By accepting anywhere from 180V to 550V AC, it eliminates the need for step-down transformers in many industrial environments.
| Model Series | Max Rated Power | DC Output Voltages | Efficiency (Max) | Built-in Active PFC |
|---|---|---|---|---|
| WDR-60 | 60W | 5V, 12V, 24V, 48V | 90.5% | N/A |
| WDR-120 | 120W | 12V, 24V, 48V | 92% | N/A |
| WDR-240 | 240W | 24V, 48V | 91% | Yes (PF > 0.84 @ 400VAC) |
| WDR-480 | 480W | 24V, 48V | 93% | Yes (PF > 0.84 @ 400VAC) |
TDR Series: 340~550VAC Three-Phase Input (240W ~ 960W)
Designed for large-scale automation, the TDR series taps directly into 3-phase industrial power without intermediate transformers, delivering perfectly stable 24V or 48V DC power.
| Model Series | Max Rated Power | DC Output Voltages | Efficiency (Max) | Built-in Active PFC |
|---|---|---|---|---|
| TDR-240 | 240W | 24V, 48V | 92% | Yes (PF > 0.52 @ 500VAC) |
| TDR-480 | 480W | 24V, 48V | 93% | Yes (PF > 0.88 @ 500VAC) |
| TDR-960 | 960W | 24V, 48V | 94.5% | Yes (PF > 0.86 @ 500VAC) |
TDR-960 Paralleling Capability
The flagship TDR-960 model includes active current sharing. Up to 4 units (3+1) can be wired in parallel to create a massive 3840W unified power source for extreme industrial loads.
Robust Defenses & System Monitoring
Phase-Loss Tolerance
One of the strongest features of the TDR series is its ability to operate on just two phases if a three-phase line drops a phase. This prevents critical system shutdowns during minor grid failures, keeping automated lines running.
Comprehensive Hardware Protections
- DC OK Relay Contact: A built-in physical relay (e.g., 60Vdc/0.3A or 30Vdc/1A) allows PLCs and control boards to actively monitor the health of the power supply.
- Overload Protection: Operates in constant current limiting mode. If a motor startup or fault draws too much power, the unit limits current rather than instantly shutting down, auto-recovering once the load normalizes.
- Over Temperature Protection: Thermal sensors shut down the output voltage if internal temperatures exceed safe limits, preventing catastrophic failure.
- Safety Certified: Fully certified to UL508 (Industrial Control Equipment) and meets BS EN/EN61000-6-2 heavy industry immunity standards.
Physical Dimensions (L * W * H)
Both the WDR and TDR series share matching ultra-slim chassis profiles, making panel layout neat, predictable, and highly space-efficient.
- WDR-60: 32 * 125.2 * 102 mm
- WDR-120: 40 * 125.2 * 113.5 mm
- WDR-240 / TDR-240: 63 * 125.2 * 113.5 mm
- WDR-480 / TDR-480: 85.5 * 125.2 * 128.5 mm
- TDR-960: 110 * 125.2 * 150 mm
