Taking Another Step Forward
The company obtained multiple intellectual property rights (patents/trademarks, etc.) and established a new company, continuously expanding its business landscape and moving toward a higher stage of development.
Features:
Single and two phase wide input range 180~550VAC
Built-in active PFC circuit compliance to EN61000-3-2
High efficiency 91% and low power dissipation
Protections: Short circuit / Overload / Over voltage / Over temperature
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
UL 508(industrial control equipment)approved
EN61000-6-2/EN50082-2) industrial immunity level
Built-in DC OK relay contact
100% full load burn-in test
2 years warranty
WDR-240-24
Leyu
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SPECIFICATION
MODEL | WDR-240-24 | WDR-240-48 | |
OUTPUT | DC VOLTAGE | 24V | 48V |
RATED CURRENT | 10A | 5A | |
CURRENT RANGE | 0 ~ 10A | 0 ~ 5A | |
RATED POWER | 240W | 240W | |
RIPPLE & NOISE (max.) | 150mVp-p | 150mVp-p | |
VOLTAGE ADJ. RANGE | 24 ~ 28V | 48 ~ 55V | |
VOLTAGE TOLERANCE | ±1.0% | ±1.0% | |
LINE REGULATION | ±0.5% | ±0.5% | |
LOAD REGULATION | ±1.0% | ±1.0% | |
SETUP, RISE TIME | 800ms, 150ms/400VAC 1500ms, 150ms/230VAC at full load | ||
HOLD UP TIME (Typ.) | 18ms / 400VAC 18ms / 230VAC at full load | ||
INPUT | VOLTAGE RANGE | 180 ~ 550VAC 254 ~ 780VDC | |
FREQUENCY RANGE | 47 ~ 63Hz | ||
POWER FACTOR (Typ.) | PF≥0.84/400VAC PF≥0.84/230VAC | ||
EFFICIENCY (Typ.) | 91% | ||
AC CURRENT (Typ.) | 1A/400VAC 2A/230VAC | ||
INRUSH CURRENT (Typ.) | COLD START 50A | ||
LEAKAGE CURRENT | <3.5mA / 530VAC | ||
PROTECTION | OVERLOAD | 105 ~ 130% rated output power | |
Protection type: Constant current limiting, unit will shut down after 3 sec., auto-recovery after 1 minute if the fault condition is removed | |||
OVER VOLTAGE | 29 ~ 33V | 56 ~ 65V | |
Protection type: Shut down o/p voltage, auto-recovery after 1 minute if the fault condition is removed | |||
OVER TEMPERATURE | 90°C ±5°C (TSW) detect on heatsink of power switch | ||
Protection type: Shut down o/p voltage, recovers automatically after temperature goes down | |||
FUNCTION | DC OK REALY CONTACT RATINGS (max.) | 60Vdc/0.3A, 30Vdc/1A, 30Vac/0.5A resistive load | |
ENVIRONMENT | WORKING TEMP. | -30 ~ +70°C (Refer to "Derating Curve") | |
WORKING HUMIDITY | 20 ~ 95% RH non-condensing | ||
STORAGE TEMP., HUMIDITY | -40 ~ +85°C, 10 ~ 95% RH | ||
TEMP. COEFFICIENT | ±0.03%/°C (0 ~ 50°C) | ||
VIBRATION | Component: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6 | ||
OTHERS | MTBF | 141.1K hrs min. MIL-HDBK-217F (25°C) | |
DIMENSION | 63*125.2*113.5mm (W*H*D) | ||
PACKING | 1.06Kg; 12pcs/13.7Kg/1.22CUFT | ||
NOTE | 1. All parameters NOT specially mentioned are measured at 400VAC input, rated load and 25°C of ambient temperature. | ||
The Leyu WDR-240 Series is a 240W single-output industrial DIN rail power supply, supporting single-phase and two-phase wide voltage input (180–550VAC) as well as 254–780VDC input. It features an active PFC circuit, achieves up to 91% efficiency, and uses free air convection cooling – no fan required for stable operation.
The series is available in two output voltage models: 24V (10A) and 48V (5A). It can be mounted on TS-35/7.5 or TS-35/15 standard DIN rails and is widely used in industrial control cabinets, automation equipment, and on-site power distribution systems.
Ultra-wide input range: 180–550VAC (single‑phase / two‑phase) and 254–780VDC – suitable for locations with unstable grid voltage
Built-in active PFC, compliant with EN61000‑3‑2 harmonic standard
High efficiency of 91%, low heat dissipation – no forced air cooling required
Complete protections: short circuit, overload (constant current limiting + shutdown after 3 sec), overvoltage, overtemperature
Free air convection cooling (fanless) – ideal for dusty or silent environments
UL 508 (industrial control equipment) approved, meets industrial immunity level EN61000‑6‑2
Built‑in DC OK relay contact for remote power status monitoring
100% full load burn‑in test, 2‑year warranty

Wider input voltage coverage: Unlike most DIN rail power supplies that only support 85–264VAC, the WDR‑240 can directly accept 380V, 400V or even 550V industrial voltages, reducing the need for external transformers.
Fanless design: Eliminates fan wear and dust accumulation, suitable for long‑term continuous operation with zero noise.
Easy installation: DIN rail clip mounting, quick replacement, saves cabinet space (dimensions 63×125.2×113.5mm).
High reliability: MTBF of 141.1K hours (MIL‑HDBK‑217F, 25°C), plus heavy industrial level EMC immunity (Criteria A).
Energy efficient: Power factor ≥0.84, reducing reactive losses – meets green factory requirements.
Industrial automation lines: Powering PLCs, sensors, relays, solenoid valves
Power monitoring and distribution cabinets: Directly take power from PT or busbar using the wide input range
Factory equipment retrofits: Replace failed power supplies without modifying front‑end wiring
Building automation & HVAC: Provide stable 24V or 48V power to controllers and field instruments
Solar and energy storage auxiliary power: DC side can directly connect to 254–780VDC (e.g., 600V PV array)
Any industrial equipment needing TS‑35 DIN rail mounting
Q: Can the WDR‑240 be connected to both 220V and 380V?
A: Yes. Its input range is 180–550VAC, so single‑phase 220V or two‑phase 380V (line‑to‑line) can be connected directly without any switching.
Q: Can outputs be paralleled to increase power?
A: Direct paralleling is not recommended. For higher power, please use a dedicated parallel module from Leyu or choose a higher‑wattage model.
Q: How does overload recovery work?
A: When overload exceeds 105–130% of rated power, the supply enters constant current limiting mode and shuts down after 3 seconds. It will auto‑recover approximately 1 minute after the fault is removed.
Q: What is the operating temperature range? Is derating required?
A: Operating temperature is -30 to +70°C. Derating is required above 50°C (refer to the derating curve). For altitudes above 2000m, fanless models need derating of 3.5°C per 1000m.
Q: What are the DC OK relay contact ratings and how to use it?
A: Contact ratings: 60Vdc/0.3A, 30Vdc/1A, or 30Vac/0.5A (resistive load). It can be connected to a PLC digital input or indicator light to monitor output voltage status.
Q: How much clearance is needed around the unit during installation?
A: Recommended clearances: 40mm top, 20mm bottom, 5mm left and right. If adjacent devices generate heat, 15mm on left/right is recommended.
The Leyu WDR‑240 Series DIN rail power supply is approved to UL508, CB (IEC62368‑1), EAC, and meets industrial EMC requirements. It is a reliable choice to replace traditional line‑frequency transformers and ordinary switching power supplies.
WDR-240:
WDR-240.doc
Table of Contents
Leyu , based in Wenzhou Leqing, enjoys a developed economy and convenient air, water, rail, and road transport. For 14 years, we have specialized in designing and producing switching power supplies and off-grid solar inverters, with CE, ROHS, CCC, IP67, and ISO9001 certifications. Our modern production and testing equipment ensure reliable performance—our 0.3‰ defect rate far exceeds the national 3% standard.
We offer OEM/ODM services (design, prototyping, production, testing, delivery) backed by senior engineers and strong R&D partnerships. Leyu products are exported to over 50 countries across Europe, the Americas, Southeast Asia, South America, and Africa. Our young, energetic foreign trade team (avg. 3 years’ experience) and our commitment to sincere, attentive service have built a trusted brand. As a high-tech enterprise integrating R&D, production, sales, and technical support, Leyu strives to become a national-class electrical company.
Leyu always puts customers at the center, integrates sincere service into every step, and with solid technology, reliable quality, efficient response, and worry-free transportation, becomes your trustworthy long-term partner.
Leyu provides full-process technical support from product design, drawing, and R&D to testing, ensuring that customized needs are professionally fulfilled.
Leyu has established a rapid response mechanism, patiently listens to customer feedback, and promptly resolves any issues during use, so customers have no worries.
Leyu strictly implements quality control that is 100 times better than the national standard (0.3‰ failure rate). All products are certified with CE, ROHS, CCC, IP67, etc., and undergo 100% full-load burn-in testing.
Leyu cooperates with multiple reliable logistics partners to provide efficient and safe domestic and international shipping solutions, ensuring products reach customers on time and in perfect condition.
2021
Late 2020
Taking Another Step Forward
The company obtained multiple intellectual property rights (patents/trademarks, etc.) and established a new company, continuously expanding its business landscape and moving toward a higher stage of development.
A New Era of Operations
An International Operations Department was formed by seven people, covering multiple platforms such as Alibaba International Station, AliExpress, Made in China, Foreign Trade Express, Google, Taobao, and Tmall. The establishment of the Operations Department marked the beginning of a new digital, multi channel era for "Leyu".
Moving to New Premises
The Foreign Trade Department moved entirely out of the factory into a brand new office building, neighboring Yueqing Ali and Times Square, upgrading both the working environment and brand image.
Shenzhen Presence
Foreign trade business expanded to Shenzhen with the establishment of a branch office, getting closer to cutting-edge markets and resources.
Factory Upgrade
The factory underwent comprehensive renovation and relocation, improving production capacity and environmental standards.
Independent Department & Market Expansion
The Foreign Trade Department was formally established, extending the sales network from Southeast Asia to Europe and accelerating internationalization.
Stepping into Foreign Trade
The company shifted its focus to foreign trade, successfully obtained foreign trade qualification certification, and officially started its overseas market journey.
Renaming and New Beginning
To expand capital scale and explore broader markets, the original "Yueqing Leyu Electric Co., Ltd." was officially renamed "Zhejiang Leyu Electric Co., Ltd.", laying the foundation for the company's upgrading and development.
The laser cutting speed is fast, the incision is smooth and flat, and there is generally no need for subsequent processing.
Choosing Leyu means choosing quality control that is 100 times stricter than the national standard (0.3‰ vs. 3%), globally recognized certifications (CE/ROHS/CCC/IP67), and switching power supplies & off-grid inverters verified in over 50 countries — backed by excellent craftsmanship and sincere service, safeguarding every power connection you make.
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Leyu Electric actively participates in numerous professional electrical and new energy exhibitions both domestically and internationally, continuously showcasing core products such as switching power supplies and off-grid solar inverters to global customers. At the booth, the company attracts many visitors with its modern craftsmanship, authoritative certifications (CE, ROHS, CCC, IP67), and quality standards that exceed national requirements.
Through live demonstrations and in-depth discussions, Leyu not only conveys its innovative design and customized OEM/ODM service capabilities but also strengthens its connections with markets in over 50 countries, including Europe, the Americas, Southeast Asia, South America, and Africa. Each exhibition serves as a powerful testament to the brand's strength, technical expertise, and commitment to sincere service, further consolidating Leyu's reputation as a responsible industry benchmark.
We put customers first — listening to your needs, providing premium products, and offering outstanding service to fully meet your expectations.
ROHS-HLG
CE-LRS
GTS
CE-Adapter
CE
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How many voltage you can supply?
5V,9V,12V,13.8V,15V,18V,24V,36V,48V,50V,60V,110V(Depend on items).
How many current you can supply?
0.5A,1A.1.5A.2A,3A.4A,5A,6A,10A,15A,20A,30A,40A,50A,60A,80A.
Can we be your distributor?
Yes, we arelooking for distributor and agent from all over the world for switching power supply, power inverter, solar controller, scrolling system. If you have any interest, pls feel free to contact us.
How to request a sample? Can the sample be engraved with a logo?
Leyu supports sample orders with MOQ as low as 1 piece and accepts custom logo on samples for OEM orders (minimum quantity and cost negotiable with our sales team). Bulk orders support full OEM/ODM customization including case color, label design, and packaging.
What's your delivery time?
Sample or small quantity order delivery in3-5 working days, large quantity order normally ship in 10-20working days.
If you have any questions or needs about our products or services, please feel free to contact us at any time. We look forward to working with you and providing you with the best packaging solutions.