Purchase now: Wago 787-740 EPSITRON ECO Power Supply
Purchase now: Atlantech Drives provides you the Wago 787-740, a robust **Switched-Mode Power Supply** from the **EPSITRON® ECO** family. Designed for standard industrial applications, this unit converts a wide range of AC input voltages (**100…240 V AC**) into a stable **24 V DC** output with a nominal current of **10 A**. The «ECO» series focuses on cost-efficiency and essential features, providing reliable power in a sturdy metal housing suitable for DIN-rail mounting in control cabinets.
Technical Specifications and Efficiency
The 787-740 delivers **240 Watts** of power. It features a green LED for «DC OK» indication and an adjustable output voltage range (22…28 V DC) to compensate for voltage drops over long cables. With an efficiency of up to **87%**, it minimizes heat generation within the enclosure. It includes protection against short-circuits (constant current mode), overloads, and overvoltage, ensuring the safety of connected PLCs and sensors.
- Part Number: 787-740.
- Series: EPSITRON® ECO.
- Input Voltage: 100…240 V AC (1 Phase).
- Output Voltage: 24 V DC (Adjustable).
- Output Current: 10 A.
- Power: 240 W.
- Housing: Metal.
- Mounting: DIN Rail 35.
- Protection: IP20.
- Cooling: Natural convection.
Expert Maintenance Advice: Derating
Heat kills power supplies. Expert Tip: The 787-740 is rated for 10A up to an ambient temperature of roughly **55°C**. Above this temperature, you must apply a **derating curve** (typically -2.5% per Kelvin), meaning at 70°C, it can deliver significantly less current. Always install the unit with at least 50mm of clearance above and below to allow the natural airflow to cool the internal heatsinks. Do not mount it directly next to hot braking resistors.
Frequently Asked Questions (FAQs)
Q: Can I connect them in parallel?
A: Yes, the 787-740 allows for parallel connection to increase power, but you should ensure the cable lengths and output voltage settings are identical to balance the load.
Q: Does it work with DC input?
A: Yes, it typically accepts a DC input range (e.g., 130…373 V DC), making it suitable for DC bus buffering applications.
Do you need more references from this brand? Explore our full catalog of Wago here.
