Chinfa DRA18-24A | 24V 18W Power Supply
£20.42
AC-DC PSU. Power: 18W Input: 90-264 Vac Output: 24 Vdc
DRA18-24A from Chinfa, 24 Vdc 18 W ac-dc DIN-rail for industrial control applications.
Featuring universal input, protected outputs and a wider 18 W performance range.
Available on back-order
Description
The Chinfa DRA18-24A is a slim DIN rail power supply designed for industrial automation, machinery and control-panel applications. This 24V A-version uses fixed screw terminals and delivers up to 0.75A, providing 18W of regulated DC output power.
A universal 90 to 264VAC input range, adjustable output and internal input filtering make the DRA18-24A suitable for compact industrial installations operating from common mains supplies worldwide.
The narrow plastic enclosure occupies only 22.5mm of DIN rail width and includes protection against short circuit, overload and overvoltage conditions.
Chinfa DRA18-24A 24V 0.75A DIN Rail Power Supply
A slim 18W industrial AC-DC power supply with universal input, adjustable 24VDC output and fixed screw terminals.
The DRA18-24A converts a single-phase AC or compatible high-voltage DC input into a stable 24VDC supply for low-power industrial control and automation equipment. Its 0.75A output capacity is well suited to sensors, relays, instrumentation, communication devices and compact control systems.
Typical Applications
The Chinfa DRA18-24A is suitable for applications including:
- Industrial automation and machinery
- PLC and remote I/O systems
- Sensors, relays and control devices
- Process-control instrumentation
- Building-automation systems
- Security and access-control equipment
- Compact 24VDC control panels
Universal AC and DC Input
The power supply accepts a wide 90 to 264VAC input and can also operate from a compatible 120 to 370VDC source. This supports installation across common industrial supply systems without manual voltage selection.
18W Regulated Output
The DRA18-24A delivers a nominal 24VDC output at up to 0.75A, providing 18W of continuous power for low-power industrial loads.
Adjustable Output Voltage
A front-panel adjustment control allows the output voltage to be set from approximately 21.6 to 28.8VDC. This can help compensate for cable losses or match the voltage requirements of connected equipment.
Space-Saving Design
At only 22.5mm wide, the DRA18-24A helps conserve valuable DIN rail space in compact control cabinets and distributed automation enclosures.
Fixed Screw-Terminal Version
The A suffix identifies the fixed screw-terminal version, providing secure field wiring for permanent industrial installations.
Integrated Protection
Short-circuit, overload and overvoltage protection help protect the power supply and connected equipment during abnormal operating conditions.
Key Features
The principal electrical, protection and installation characteristics of the Chinfa DRA18-24A.
- Model: DRA18-24A
- Terminal type: Fixed screw terminals
- AC input voltage: 90 to 264VAC
- DC input voltage: 120 to 370VDC
- Nominal output voltage: 24VDC
- Rated output power: 18W
- Typical efficiency: 77%
- Input filtering: Internal input filter
- Status indication: DC ON and DC LOW LEDs
- Protection: Short circuit, overload and overvoltage
- Cooling: Natural convection
- Degree of protection: IP20
- Operating temperature: Up to +71°C with derating
- Mounting: TS35 DIN rail
- Dimensions: 90 x 22.5 x 115mm
- Weight: Approximately 150g
- Warranty: 3 years
Technical Specification
Electrical, protection, environmental and mechanical information for product selection and system design.
| Specification | Details |
|---|---|
| Manufacturer | Chinfa Electronics |
| Model Number | DRA18-24A |
| Series | DRA18 |
| Product Type | Industrial DIN rail AC-DC power supply |
| Number of Outputs | 1 |
| Input Phase | Single phase |
| AC Input Voltage | 90 to 264VAC |
| DC Input Voltage | 120 to 370VDC |
| Input Frequency | 47 to 63Hz |
| Nominal Output Voltage | 24VDC |
| Output Voltage Adjustment | Approximately 21.6 to 28.8VDC |
| Rated Output Current | 0.75A |
| Rated Output Power | 18W |
| Typical Efficiency | 77% |
| Ripple and Noise | Approximately 50mV peak-to-peak |
| Line Regulation | Approximately ±1% |
| Load Regulation | Approximately ±1% |
| Hold-Up Time | Approximately 20ms at 230VAC |
| DC ON Indicator | Green front-panel LED |
| DC LOW Indicator | Red front-panel LED |
| Short-Circuit Protection | Hiccup-mode protection |
| Overload Protection | Approximately 110 to 140% of rated output |
| Input Fuse | Internal T2A / 250VAC fuse |
| Isolation Voltage | 3,000VAC input to output |
| Isolation Resistance | 100MΩ minimum at 500VDC |
| Operating Temperature | Up to +71°C, subject to output derating above +61°C |
| Storage Temperature | -25 to +85°C |
| Relative Humidity | 20 to 95% RH, non-condensing |
| MTBF | Approximately 764,000 hours |
| Cooling Method | Natural convection |
| Degree of Protection | IP20 |
| Connections | Fixed screw terminals |
| Enclosure Material | Plastic |
| Dimensions | 90 x 22.5 x 115mm |
| Weight | Approximately 150g |
| Mounting | TS35/7.5 or TS35/15 DIN rail |
| Approvals | UL, cUL, TUV and CE |
| Warranty | 3 years |
Available Model
This product page covers only the 24V fixed screw-terminal version of the Chinfa DRA18 series.
| Model Number | Input Voltage | Output Voltage | Output Current | Power Rating |
|---|---|---|---|---|
| DRA18-24A | 90–264VAC / 120–370VDC | 24VDC | 0.75A | 18W |
Technical Support from Relec Electronics
As part of the Relec Electronics group, Din Rail 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 DIN rail power supplies and complex industrial power requirements. For alternative solutions, customised options or specialist technical advice, visit the Relec Electronics website.
Additional information
| Weight | 380 g |
|---|---|
| Dimensions | 91 × 90 × 56.5 mm |
| Output Voltage | 12 Vdc, 24 Vdc |
| Connector Type | Screw Terminals, Spring Terminals |
| Filter by Power Rating | 20 W |
