Description
The Chinfa WRA240-24 is a compact three-phase DIN rail power supply designed for industrial automation, machinery and control-panel applications. It provides a regulated 24VDC output at up to 10A, delivering 240W of continuous power.
A wide three-phase input range of 340 to 575VAC allows the WRA240-24 to operate from common industrial 400V and 480V supplies. Its high efficiency, compact metal enclosure and parallel-operation function make it suitable for demanding installations where reliable 24VDC power is required.
Integrated short-circuit, overload, overvoltage and overtemperature protection help protect the supply and connected equipment, while natural convection cooling eliminates the need for a fan.
Chinfa WRA240-24 24V 10A Three-Phase DIN Rail Power Supply
A compact 240W industrial power supply with a wide three-phase AC input and a regulated 24VDC output.
The WRA240-24 converts a three-phase industrial AC supply into a stable 24VDC output for machinery, process equipment and automation systems. Its 10A output capacity makes it suitable for supplying PLCs, control devices, communications equipment and other industrial DC loads.
Typical Applications
The Chinfa WRA240-24 is suitable for applications including:
- Industrial automation and machinery
- PLC, HMI and remote I/O systems
- Motors, actuators, solenoids and contactors
- Process-control and factory-automation equipment
- Packaging and material-handling systems
- Industrial communications and monitoring equipment
- Three-phase control panels requiring 24VDC power
Wide Three-Phase Input
The WRA240-24 accepts a three-phase input from 340 to 575VAC, allowing operation from common industrial mains supplies without requiring a neutral connection.
240W Regulated Output
The power supply delivers a nominal 24VDC output at up to 10A, providing 240W of continuous power for industrial control and automation loads.
High-Efficiency Operation
Efficiency of up to 90% helps reduce internal power losses and heat generation, supporting reliable operation inside industrial control cabinets.
Parallel Operation
An integrated parallel-function switch allows compatible WRA240 power supplies to be connected in parallel where increased output capacity or system redundancy is required.
Integrated Protection
Short-circuit, overload, overvoltage and overtemperature protection help safeguard the power supply and connected equipment during abnormal operating conditions.
Compact Metal Enclosure
The WRA240-24 is housed in a robust metal enclosure measuring 124 x 89 x 118.8mm. It mounts directly onto a standard 35mm DIN rail and uses natural convection cooling.
Key Features
The principal electrical, protection and installation characteristics of the Chinfa WRA240-24.
- Product type: Three-phase industrial DIN rail AC-DC power supply
- Input: Three-phase 340 to 575VAC
- Nominal output voltage: 24VDC
- Maximum output current: 10A
- Rated output power: 240W
- Minimum efficiency: 88%
- Typical efficiency: 90%
- Parallel operation: Supported via selector switch
- Protection: Short circuit, overload, overvoltage and overtemperature
- Cooling: Natural convection
- Enclosure: Metal
- Degree of protection: IP20
- Operating temperature: -40 to +71°C
- Mounting: 35mm DIN rail
- Dimensions: 124 x 89 x 118.8mm
- Weight: Approximately 1.1kg
- Warranty: 3 years
- Country of origin: Taiwan
Technical Specification
Electrical, protection, environmental and mechanical information for product selection and system design.
| Specification | Details |
|---|---|
| Manufacturer | Chinfa Electronics |
| Model Number | WRA240-24 |
| Series | WRA240 |
| Product Type | Three-phase industrial DIN rail AC-DC power supply |
| Number of Outputs | 1 |
| Input Phases | Three phase |
| AC Input Voltage | 340 to 575VAC, three phase |
| Nominal Output Voltage | 24VDC |
| Rated Output Current | 10A |
| Rated Output Power | 240W |
| Typical Efficiency | 90% |
| Ripple and Noise | Approximately 100mV peak-to-peak |
| Load Regulation | Up to approximately ±1% |
| Parallel Operation | Supported via integrated selector switch |
| Operating Temperature | -40 to +71°C, subject to output derating |
| Storage Temperature | -40 to +85°C |
| Relative Humidity | Up to 95% RH, non-condensing |
| MTBF | Approximately 488,000 hours |
| Cooling Method | Natural convection |
| Degree of Protection | IP20 |
| Connections | Screw terminals |
| Enclosure Material | Metal |
| Dimensions | 124 x 89 x 118.8mm |
| Weight | Approximately 1.1kg |
| Mounting | 35mm DIN rail |
| Compliance Standards | UL 508, UL 62368-1, EN 62368-1, EN 61558-1, EN 61558-2-16 and EN 55032 |
| Warranty | 3 years |
| Country of Origin | Taiwan |
Available Model
This product page covers only the 24V version of the Chinfa WRA240 series.
| Model Number | Input Voltage | Output Voltage | Output Current | Power Rating |
|---|---|---|---|---|
| WRA240-24 | 3-phase 340–575VAC | 24VDC | 10A | 240W |
Technical Support from Relec Electronics
As part of the Relec Electronics group, Dinrail Power benefits from over 45 years of experience supplying industrial electronic components and power solutions. Our engineering team can provide technical guidance, product selection support and assistance with three-phase DIN rail power supplies and complex industrial power requirements. For alternative solutions, customised options or specialist technical advice, visit the Relec Electronics website.




