MEAN WELL MDR Switched Mode DIN Rail Power Supply, 85 → 264V ac ac Input, 12V dc dc Output, 1.67A Output, 20W
- RS Stock No.:
- 428-427
- Mfr. Part No.:
- MDR-20-12
- Brand:
- MEAN WELL
Available to back order for despatch 01/05/2024
Added
Price Each
£41.54
(exc. VAT)
£49.85
(inc. VAT)
| Units | Per unit |
| 1 - 9 | £41.54 |
| 10 - 14 | £39.83 |
| 15 + | £38.05 |
Alternatives
This product is not currently available. Here are our alternative recommendations.
- RS Stock No.:
- 428-427
- Mfr. Part No.:
- MDR-20-12
- Brand:
- MEAN WELL
Legislation and Compliance
Product Details
Mean Well MDR Series Single Output DIN Rail Power Supply
A range of ultra slim single output DIN Rail power supplies with short circuit, overload and over voltage protection. These PSUs can be installed on DIN Rail TS-35/7.5 or 15 and offer cooling by free air convection.
Features and Benefits
Universal AC input/Full range
Protections: Short circuit/Overload/Over voltage
Cooling by free air convection
Can be installed on DIN Rail TS-35/7.5 or 15
DC OK relay contact
LED indicator for power-on
No load power consumption <0.75 W
100% full load burn-in test
3 years warranty
Class 1, Div 2 hazardous locations T4
Why use a DIN Rail Power Supply?
The flexibility of DIN Rail mounting systems enables quicker installation time as all devices are able to simply snap onto the metal rails. Power supplies can be easily organised on DIN Rails within enclosed wall boxes or in areas where there is limited space. Similar devices can be mounted next to each other reducing the amount of cabling required. Most power supplies are convection cooled so no cooling fans are needed.
DIN Rail AC/DC power supplies are widely used in many automation, instrumentation and industrial applications. They are used to power a wide variety of DC operated devices including sensors, motors, actuators, solenoids and relays.
DIN Rail AC/DC power supplies are widely used in many automation, instrumentation and industrial applications. They are used to power a wide variety of DC operated devices including sensors, motors, actuators, solenoids and relays.
Points to Consider When Buying a DIN Rail Power Supply
DIN Rail size– There are three common types of DIN Rails. Top Hat, G section and C section. Most have a depth of 7.5 mm or 15 mm. It is wise to check that your power supply is compatible with your DIN Rail.
Protection Types – It is important to choose a power supply that is protected against either short circuit, overload, over temperature or over voltage. Some power supplies also offer a hiccup mode which will allow the PSU to resume operation once the fault is cleared.
Fixed or adjustable output voltage or current – In test systems it is often convenient to have adjustable DC voltage however in other applications a fixed DC supply may be essential.
Cabling and wiring – The input/output lines to and from the power supply should be as short as possible with a large cross sectional area to help minimise noise and heat.
Efficiency – Choose a power supply that has an efficiency over 89% to minimise the amount of power dissipation, especially if the system relies on convection cooling.
Input voltage range – If the DIN Rail power supply you are buying is to be used in Europe and North America as well as the UK then a universal AC input range of 80 V ac to 264 V ac is required.
Standards – If the power supply is to be used in the USA for controlling electric motors then it will need to comply with Standard UL508, the safety standard for industrial control equipment.
Standards
UL508, UL60950-1, TUV EN60950-1, Class I, Div. 2 Group A, B, C, D Hazardous Locations T4, EAC TP TC 004, BSMI CNS14336-1 approved
Specifications
Attribute | Value |
|---|---|
| Type | Switched Mode |
| Output Voltage | 12V dc |
| Output Current | 1.67A |
| AC or DC Input Voltage | ac |
| AC or DC Output Voltage | dc |
| Input Voltage | 85 → 264V ac |
| Power Rating | 20W |
| Electrical Phase | 1 |
| Number of Outputs | 1 |
| Height | 100mm |
| Width | 22.5mm |
| Depth | 90mm |
| Series | MDR |
| Output Voltage Adjustment Range | 10.8 → 13.2V |
| Ripple And Noise | 120mV Pk-Pk |
| Mounting Type | DIN Rail Mount |
| MTBF | 236900h |
| Minimum Temperature | -20°C |
| Standards Met | RoHS Compliant, TUV EN 60950-1, UL 508 |
| Special Features | Overvoltage and Short Circuit Protection |
| Load Regulation | ±1% |
| Maximum Temperature | +70°C |
Related links
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 15V dc dc Output 20W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 12V dc dc Output 100W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 5V dc dc Output 10W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 12V dc dc Output 60W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 24V dc dc Output 20W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 12V dc dc Output 40W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 24V dc dc Output 60W
- MEAN WELL MDR Switch Mode DIN Rail Power Supply 5V dc dc Output 20W