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MDR-20-12 12V 1.67A 20W AC DC Industrial DIN Rail Power Supply
Rp180,000.00
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DAPPRA MDR-20-12 (SKU: OE82) is a 20W single output ultra-slim industrial DIN rail power supply with 12V DC / 1.67A output and universal 85–264 VAC input. Slim plastic housing, fanless natural convection cooling, complete protection functions, ideal for industrial control and automation.
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Overview
MDR-20-12 Overview
The DAPPRA MDR-20-12 (SKU: OE82) is the 12V model in the 20W MDR tier. It provides 12V DC at 1.67A from a universal 85–264 VAC input, delivering 20W of rated output power in the same 22.5 mm ultra-slim housing as the MDR-10 series, but with double the current capacity and an added +V ADJ potentiometer (12–15V).
It is suited to small PLCs, 12V sensor clusters and signal relay groups whose combined draw exceeds the 0.84A limit of the MDR-10-12. The unit uses fanless natural convection cooling, a DC OK active signal, and hiccup-mode protection for short circuit, overload and over-voltage (13.8–16.2V). Operating range is −20°C to +70°C with derating above 50°C.
Key Features
MDR-20-12 Key Features
- 20W Output · 12V / 1.67A12V DC at 1.67A, with +V ADJ potentiometer for 12–15V adjustment.
- 22.5 mm Ultra-Slim HousingSame width as MDR-10 but higher current — ideal when cabinet depth is limited but load is higher.
- Universal Input 85–264 VACSingle-phase, 47–63Hz; also 120–370 VDC.
- DC OK Active SignalLogic-level status output for PLC monitoring.
- Hiccup-Mode ProtectionShort-circuit, overload (above 105%) and over-voltage (13.8–16.2V) with auto-recovery.
- Efficiency 80%Higher than MDR-20-5 (76%).
- TS35 DIN RailTS35/7.5 or 15, vertical mounting only.
Specifications
MDR-20-12 Specifications
Output
| DC Voltage | 12V |
| Rated Current | 1.67A |
| Current Range | 0–1.67A |
| Rated Power | 20W |
| Ripple | 120mVp-p |
| Adjustment | 12–15V (+V ADJ) |
| Tolerance | ±1.0% |
Input
| Voltage | 85–264VAC · 120–370VDC |
| Efficiency | 80% |
| No-Load | <0.75W |
Protection
| Overload | Above 105% · Hiccup · Auto-recovery |
| Over Voltage | 13.8–16.2V · Hiccup |
Notes+V ADJ range 12–15V. Hiccup-mode protection. Derating above 50°C.
Dimensions
MDR-20-12 Dimensions
Mechanical
| Width | 22.5 mm |
| Height | 90 mm |
| Depth | 100 mm |
| Weight | ~0.18 kg |
Clearances
| Top/Bottom | 40 / 20 mm |
| Sides | 5 mm |
| DIN Rail | TS35/7.5 or 15 |
Installation
MDR-20-12 Installation
01 / 06
Vertical Only
Input bottom, output top. No horizontal or upside-down.
02 / 06
Clearances
5 mm sides, 40 mm top, 20 mm bottom.
03 / 06
TS35 Rail
TS35/7.5 or 15.
04 / 06
FG to PE
Frame ground to protective earth.
05 / 06
Temperature
−20 to +70°C, derate above 50°C.
06 / 06
Pollution Degree 2
Dry, ventilated cabinet.
Wiring
MDR-20-12 Wiring
TB1
| Pin | Assignment |
|---|---|
| 1 | FG |
| 2 | AC/N |
| 3 | AC/L |
TB2 (3 Pins)
| Pin | Assignment |
|---|---|
| 1 | +V |
| 2 | −V |
| 3 | DC OK active signal |
DC Output12–15V adjustable. DC OK is a logic-level active signal.
Safety
MDR-20-12 Safety & Cautions
- Qualified technician only. Do not open case.
- Do not connect primary and secondary sides.
- Burn hazard — allow cooling before touching.
- Protect openings from objects and liquids.
- FG to PE.
- Do not exceed 1.67A / 20W.
- Disconnect before maintenance.
- Do not use DC OK as power output.
Applications
MDR-20-12 Industrial Applications
Small PLC Power
12V Sensor Clusters
Signal Relays
Indicator Panels
Building Automation
Test & Measurement
Security Systems
Compact Cabinets
Next Step
Need the MDR-20-12?
Contact DAPPRA Automation — or explore the full MDR Series.
Support
MDR-20-12 FAQ
What is the DAPPRA MDR-20-12?
The DAPPRA MDR-20-12 (SKU: OE82) is a 20W single-output industrial DIN rail power supply providing 12V DC at 1.67A from a universal 85–264VAC input, in a 22.5 mm blue plastic housing with fanless cooling and DC OK active signal.
How does the MDR-20-12 differ from the MDR-10-12?
The MDR-20-12 doubles the output current to 1.67A (vs 0.84A on MDR-10-12) within the same 22.5 mm housing width. It also adds a +V ADJ potentiometer for output voltage adjustment, which the MDR-10-12 lacks. Use MDR-20-12 when the 10W model's 0.84A is insufficient for the combined sensor/relay load.
Can the MDR-20-12 power a small PLC and several 12V sensors?
Yes, provided the combined steady-state current of the PLC and sensors stays within 1.67A (20W). Include startup current in the calculation. If the PLC alone draws more than 1.2–1.3A, consider the MDR-40-12 (3.33A) or MDR-60-12 (5A).
What is the output voltage adjustment range of the MDR-20-12?
The MDR-20-12 includes a front-panel +V ADJ potentiometer with a 12–15V adjustment range. Before turning the voltage up, confirm that every connected 12V device can tolerate the higher voltage; many industrial 12V devices accept 13.8–14.4V, but the exact tolerance must be checked.
What is the over-voltage protection threshold of the MDR-20-12?
Over-voltage protection triggers at 13.8–16.2V. The output enters hiccup mode and recovers automatically after the fault is removed.
What is the typical efficiency of the MDR-20-12?
The MDR-20-12 achieves 80% typical efficiency at 230VAC input and full load, slightly higher than the MDR-20-5 (76%) and MDR-10-12 (81%).
What is the input voltage range of the MDR-20-12?
85–264VAC single phase (47–63Hz) or 120–370VDC. Do not connect to 380VAC three-phase supply.
What protection functions does the MDR-20-12 include?
Short-circuit protection, overload protection (above 105%, hiccup mode auto-recovery) and over-voltage protection (13.8–16.2V, hiccup mode auto-recovery).
Is the MDR-20-12 DIN rail mountable?
Yes, TS35/7.5 or TS35/15 DIN rail, vertical orientation only (input bottom, output top).
What are the dimensions and weight of the MDR-20-12?
22.5 × 90 × 100 mm (W × H × D), approximately 0.18 kg.
What is the terminal pin assignment of the MDR-20-12?
TB1: Pin 1 = FG, Pin 2 = AC/N, Pin 3 = AC/L. TB2 (3 pins): Pin 1 = +V, Pin 2 = −V, Pin 3 = DC OK active signal.
Does the MDR-20-12 have a DC OK relay contact?
No. The MDR-20-12 uses a DC OK active signal (logic-level), not a relay contact. For a dry relay contact, choose MDR-40 or higher.
What is the ripple and noise of the MDR-20-12?
Maximum 120mVp-p, measured at 20MHz bandwidth with a 0.1μF and 47μF parallel capacitor.
Can the MDR-20-12 operate in a high-temperature cabinet?
The MDR-20-12 operates from −20°C to +70°C, but derating is required above 50°C. In a cabinet that regularly exceeds 50°C, reduce the load according to the derating curve or improve ventilation.
What certifications does the MDR-20-12 have?
UL508, UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 and AS/NZS 60950.1 (series-level). Confirm model coverage for your destination market.
Related Technical Articles
6 ulasan untuk MDR-20-12 12V 1.67A 20W AC DC Industrial DIN Rail Power Supply
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Overview
MDR-20-12 Overview
The DAPPRA MDR-20-12 (SKU: OE82) is the 12V model in the 20W MDR tier. It provides 12V DC at 1.67A from a universal 85–264 VAC input, delivering 20W of rated output power in the same 22.5 mm ultra-slim housing as the MDR-10 series, but with double the current capacity and an added +V ADJ potentiometer (12–15V).
It is suited to small PLCs, 12V sensor clusters and signal relay groups whose combined draw exceeds the 0.84A limit of the MDR-10-12. The unit uses fanless natural convection cooling, a DC OK active signal, and hiccup-mode protection for short circuit, overload and over-voltage (13.8–16.2V). Operating range is −20°C to +70°C with derating above 50°C.
Key Features
MDR-20-12 Key Features
- 20W Output · 12V / 1.67A12V DC at 1.67A, with +V ADJ potentiometer for 12–15V adjustment.
- 22.5 mm Ultra-Slim HousingSame width as MDR-10 but higher current — ideal when cabinet depth is limited but load is higher.
- Universal Input 85–264 VACSingle-phase, 47–63Hz; also 120–370 VDC.
- DC OK Active SignalLogic-level status output for PLC monitoring.
- Hiccup-Mode ProtectionShort-circuit, overload (above 105%) and over-voltage (13.8–16.2V) with auto-recovery.
- Efficiency 80%Higher than MDR-20-5 (76%).
- TS35 DIN RailTS35/7.5 or 15, vertical mounting only.
Specifications
MDR-20-12 Specifications
Output
| DC Voltage | 12V |
| Rated Current | 1.67A |
| Current Range | 0–1.67A |
| Rated Power | 20W |
| Ripple | 120mVp-p |
| Adjustment | 12–15V (+V ADJ) |
| Tolerance | ±1.0% |
Input
| Voltage | 85–264VAC · 120–370VDC |
| Efficiency | 80% |
| No-Load | <0.75W |
Protection
| Overload | Above 105% · Hiccup · Auto-recovery |
| Over Voltage | 13.8–16.2V · Hiccup |
Notes+V ADJ range 12–15V. Hiccup-mode protection. Derating above 50°C.
Dimensions
MDR-20-12 Dimensions
Mechanical
| Width | 22.5 mm |
| Height | 90 mm |
| Depth | 100 mm |
| Weight | ~0.18 kg |
Clearances
| Top/Bottom | 40 / 20 mm |
| Sides | 5 mm |
| DIN Rail | TS35/7.5 or 15 |
Installation
MDR-20-12 Installation
01 / 06
Vertical Only
Input bottom, output top. No horizontal or upside-down.
02 / 06
Clearances
5 mm sides, 40 mm top, 20 mm bottom.
03 / 06
TS35 Rail
TS35/7.5 or 15.
04 / 06
FG to PE
Frame ground to protective earth.
05 / 06
Temperature
−20 to +70°C, derate above 50°C.
06 / 06
Pollution Degree 2
Dry, ventilated cabinet.
Wiring
MDR-20-12 Wiring
TB1
| Pin | Assignment |
|---|---|
| 1 | FG |
| 2 | AC/N |
| 3 | AC/L |
TB2 (3 Pins)
| Pin | Assignment |
|---|---|
| 1 | +V |
| 2 | −V |
| 3 | DC OK active signal |
DC Output12–15V adjustable. DC OK is a logic-level active signal.
Safety
MDR-20-12 Safety & Cautions
- Qualified technician only. Do not open case.
- Do not connect primary and secondary sides.
- Burn hazard — allow cooling before touching.
- Protect openings from objects and liquids.
- FG to PE.
- Do not exceed 1.67A / 20W.
- Disconnect before maintenance.
- Do not use DC OK as power output.
Applications
MDR-20-12 Industrial Applications
Small PLC Power
12V Sensor Clusters
Signal Relays
Indicator Panels
Building Automation
Test & Measurement
Security Systems
Compact Cabinets
Next Step
Need the MDR-20-12?
Contact DAPPRA Automation — or explore the full MDR Series.
Support
MDR-20-12 FAQ
What is the DAPPRA MDR-20-12?
The DAPPRA MDR-20-12 (SKU: OE82) is a 20W single-output industrial DIN rail power supply providing 12V DC at 1.67A from a universal 85–264VAC input, in a 22.5 mm blue plastic housing with fanless cooling and DC OK active signal.
How does the MDR-20-12 differ from the MDR-10-12?
The MDR-20-12 doubles the output current to 1.67A (vs 0.84A on MDR-10-12) within the same 22.5 mm housing width. It also adds a +V ADJ potentiometer for output voltage adjustment, which the MDR-10-12 lacks. Use MDR-20-12 when the 10W model's 0.84A is insufficient for the combined sensor/relay load.
Can the MDR-20-12 power a small PLC and several 12V sensors?
Yes, provided the combined steady-state current of the PLC and sensors stays within 1.67A (20W). Include startup current in the calculation. If the PLC alone draws more than 1.2–1.3A, consider the MDR-40-12 (3.33A) or MDR-60-12 (5A).
What is the output voltage adjustment range of the MDR-20-12?
The MDR-20-12 includes a front-panel +V ADJ potentiometer with a 12–15V adjustment range. Before turning the voltage up, confirm that every connected 12V device can tolerate the higher voltage; many industrial 12V devices accept 13.8–14.4V, but the exact tolerance must be checked.
What is the over-voltage protection threshold of the MDR-20-12?
Over-voltage protection triggers at 13.8–16.2V. The output enters hiccup mode and recovers automatically after the fault is removed.
What is the typical efficiency of the MDR-20-12?
The MDR-20-12 achieves 80% typical efficiency at 230VAC input and full load, slightly higher than the MDR-20-5 (76%) and MDR-10-12 (81%).
What is the input voltage range of the MDR-20-12?
85–264VAC single phase (47–63Hz) or 120–370VDC. Do not connect to 380VAC three-phase supply.
What protection functions does the MDR-20-12 include?
Short-circuit protection, overload protection (above 105%, hiccup mode auto-recovery) and over-voltage protection (13.8–16.2V, hiccup mode auto-recovery).
Is the MDR-20-12 DIN rail mountable?
Yes, TS35/7.5 or TS35/15 DIN rail, vertical orientation only (input bottom, output top).
What are the dimensions and weight of the MDR-20-12?
22.5 × 90 × 100 mm (W × H × D), approximately 0.18 kg.
What is the terminal pin assignment of the MDR-20-12?
TB1: Pin 1 = FG, Pin 2 = AC/N, Pin 3 = AC/L. TB2 (3 pins): Pin 1 = +V, Pin 2 = −V, Pin 3 = DC OK active signal.
Does the MDR-20-12 have a DC OK relay contact?
No. The MDR-20-12 uses a DC OK active signal (logic-level), not a relay contact. For a dry relay contact, choose MDR-40 or higher.
What is the ripple and noise of the MDR-20-12?
Maximum 120mVp-p, measured at 20MHz bandwidth with a 0.1μF and 47μF parallel capacitor.
Can the MDR-20-12 operate in a high-temperature cabinet?
The MDR-20-12 operates from −20°C to +70°C, but derating is required above 50°C. In a cabinet that regularly exceeds 50°C, reduce the load according to the derating curve or improve ventilation.
What certifications does the MDR-20-12 have?
UL508, UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 and AS/NZS 60950.1 (series-level). Confirm model coverage for your destination market.
6 ulasan untuk MDR-20-12 12V 1.67A 20W AC DC Industrial DIN Rail Power Supply
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