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MDR-20-24 24V 1A 24W AC DC Industrial DIN Rail Power Supply
Rp175,000.00
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DAPPRA MDR-20-24 (SKU: OE81) is a 20W single output ultra-slim industrial DIN rail power supply with 24V DC / 0.84A 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-20-24 Overview
The DAPPRA MDR-20-24 (SKU: OE81) is the 24V model in the 20W MDR tier. It provides 24V DC at 1A — 24W — from a universal 85–264 VAC input in the same 22.5 mm ultra-slim housing as the MDR-10 series, but with higher current and a +V ADJ potentiometer (21.6–26.4V). Notably, it is the only MDR-20 model that includes over-temperature protection alongside short-circuit, overload and over-voltage protection.
It is suited to compact 24V PLCs, sensor clusters and small relay groups whose combined draw exceeds the 0.42A limit of the MDR-10-24 but stays within 1A. The MDR-20-24 upgrades the DC OK from an active signal (MDR-10) to a dry relay contact (30V/1A), enabling direct PLC input. Efficiency is 84%, the highest in the MDR-20 series, and ripple is 150mVp-p.
Key Features
MDR-20-24 Key Features
- 24W · 24V / 1A24V DC at 1A, +V ADJ 21.6–26.4V.
- Over-Temperature ProtectionUnique to the MDR-20-24 among MDR-20 models.
- DC OK Relay ContactDry contact 30V/1A on TB2 pins 5–6.
- 22.5 mm Ultra-SlimBlue plastic, 22.5 × 90 × 100 mm.
- Efficiency 84%Highest in the MDR-20 series.
- Narrow Adjust Window21.6–26.4V (±10%), safe for typical 24V devices.
- TS35 DIN RailTS35/7.5 or 15, vertical only.
Specifications
MDR-20-24 Specifications
Output
| DC Voltage | 24V |
| Current | 1A |
| Power | 24W |
| Ripple | 150mVp-p |
| Adjustment | 21.6–26.4V |
| Tolerance | ±1.0% |
Input
| Voltage | 85–264VAC · 120–370VDC |
| Efficiency | 84% |
| No-Load | <0.75W |
Protection
| Overload | Above 105% · Hiccup · Auto-recovery |
| Over Voltage | 27.6–32.4V · Hiccup |
| Over Temperature | Shutdown (unique to MDR-20-24) |
Notes21.6–26.4V ±10% adjustable. DC OK relay contact. Over-temperature protection included. Ripple 150mVp-p.
Dimensions
MDR-20-24 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-20-24 Installation
01 / 06
Vertical Only
Input bottom, output top.
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 earth.
05 / 06
Temperature
−20 to +70°C, derate above 50°C.
06 / 06
Over-Temp Protection
Output shuts down if internal temperature exceeds limit; allow to cool before re-powering.
Wiring
MDR-20-24 Wiring
TB1
| Pin | Assignment |
|---|---|
| 1 | FG |
| 2 | AC/N |
| 3 | AC/L |
TB2 (6 Pins)
| Pin | Assignment |
|---|---|
| 1,2 | +V |
| 3,4 | −V |
| 5,6 | DC OK relay contact |
DC Output21.6–26.4V adjustable. DC OK is a dry relay contact (30V/1A). Over-temperature protection.
Safety
MDR-20-24 Safety & Cautions
- Qualified technician only.
- Do not connect primary and secondary.
- Burn hazard.
- Protect openings.
- FG to PE.
- Do not exceed 1A / 24W.
- Do not use DC OK as power output.
- Disconnect before maintenance.
Applications
MDR-20-24 Industrial Applications
Compact 24V PLCs
24V Sensor Clusters
Relay Coils
Signal Conditioning
Test & Measurement
Building Automation
Security Modules
Compact Cabinets
Next Step
Need the MDR-20-24?
Contact DAPPRA Automation — or explore the full MDR Series.
Support
MDR-20-24 FAQ
What is the DAPPRA MDR-20-24?
The DAPPRA MDR-20-24 (SKU: OE81) is a 24W single-output industrial DIN rail power supply providing 24V DC at 1A from a universal 85–264VAC input, in a 22.5 mm blue plastic housing with 21.6–26.4V +V ADJ, DC OK relay contact and over-temperature protection.
Why is the MDR-20-24 rated 24W when the MDR-20-12 is 20W?
Both are in the "20" power class and share the same 22.5 mm housing, but the 24V model's 1A output yields 24V × 1A = 24W, while the 12V model's 1.67A output yields 12V × 1.67A ≈ 20W. The higher voltage allows slightly more total wattage within the same current-limited design.
What is the over-voltage protection threshold of the MDR-20-24?
Over-voltage protection triggers at 27.6–32.4V (115–135% of 24V). The output enters hiccup mode and recovers automatically after the fault is removed. This threshold sits above the 26.4V maximum adjustment point, so normal potentiometer adjustment will not trigger it.
What is the output voltage adjustment range of the MDR-20-24?
21.6–26.4V via the front-panel +V ADJ potentiometer (±10% of 24V). This is the narrowest adjustment window among the 24V MDR models (MDR-40/60/100 adjust to 30V). It is sufficient for voltage-drop compensation and fine-tuning without exceeding the typical 24V device tolerance.
Does the MDR-20-24 have over-temperature protection?
Yes. The MDR-20-24 includes over-temperature protection in addition to short-circuit, overload and over-voltage protection. If the internal temperature exceeds the safe limit, the output shuts down; allow the unit to cool before re-powering.
What is the typical efficiency of the MDR-20-24?
The MDR-20-24 achieves 84% typical efficiency at 230VAC input and full load, the highest in the MDR-20 series (5V: 76%; 12V: 80%; 15V: 81%).
What is the ripple and noise of the MDR-20-24?
Maximum 150mVp-p, measured at 20MHz bandwidth with a 0.1μF and 47μF parallel capacitor. This is higher than the 5V model (80mVp-p) but typical for a 24V output in this power class.
What is the input voltage range of the MDR-20-24?
85–264VAC single phase (47–63Hz) or 120–370VDC. Do not connect to 380VAC three-phase supply.
What protection functions does the MDR-20-24 include?
Short-circuit protection, overload protection (above 105%, hiccup mode auto-recovery), over-voltage protection (27.6–32.4V, hiccup mode auto-recovery) and over-temperature protection.
Does the MDR-20-24 have a DC OK relay contact?
Yes. TB2 pins 5 and 6 provide a dry DC OK relay contact rated 30V/1A resistive, suitable for direct PLC input.
Is the MDR-20-24 DIN rail mountable?
Yes, TS35/7.5 or TS35/15 DIN rail, 22.5 mm width, vertical orientation only.
What are the dimensions and weight of the MDR-20-24?
22.5 × 90 × 100 mm (W × H × D), approximately 0.18 kg.
What is the terminal pin assignment of the MDR-20-24?
TB1: Pin 1 = FG, Pin 2 = AC/N, Pin 3 = AC/L. TB2 (6 pins): Pins 1,2 = +V; Pins 3,4 = −V; Pins 5,6 = DC OK relay contact.
Can the MDR-20-24 power a 24V PLC and a few sensors?
Yes, if the PLC and sensors' combined steady-state current stays within 1A. Many compact 24V PLCs draw 0.3–0.6A, leaving 0.4–0.7A for sensors and relay coils. If the combined load approaches 1A, step up to the MDR-40-24 (1.7A) for headroom.
What certifications does the MDR-20-24 have?
UL508, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 and AS/NZS 62368.1. Confirm certificate coverage for your destination market.
Related Technical Articles
13 ulasan untuk MDR-20-24 24V 1A 24W AC DC Industrial DIN Rail Power Supply
Hanya pelanggan yang telah membeli produk ini dapat memberikan ulasan.
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Overview
MDR-20-24 Overview
The DAPPRA MDR-20-24 (SKU: OE81) is the 24V model in the 20W MDR tier. It provides 24V DC at 1A — 24W — from a universal 85–264 VAC input in the same 22.5 mm ultra-slim housing as the MDR-10 series, but with higher current and a +V ADJ potentiometer (21.6–26.4V). Notably, it is the only MDR-20 model that includes over-temperature protection alongside short-circuit, overload and over-voltage protection.
It is suited to compact 24V PLCs, sensor clusters and small relay groups whose combined draw exceeds the 0.42A limit of the MDR-10-24 but stays within 1A. The MDR-20-24 upgrades the DC OK from an active signal (MDR-10) to a dry relay contact (30V/1A), enabling direct PLC input. Efficiency is 84%, the highest in the MDR-20 series, and ripple is 150mVp-p.
Key Features
MDR-20-24 Key Features
- 24W · 24V / 1A24V DC at 1A, +V ADJ 21.6–26.4V.
- Over-Temperature ProtectionUnique to the MDR-20-24 among MDR-20 models.
- DC OK Relay ContactDry contact 30V/1A on TB2 pins 5–6.
- 22.5 mm Ultra-SlimBlue plastic, 22.5 × 90 × 100 mm.
- Efficiency 84%Highest in the MDR-20 series.
- Narrow Adjust Window21.6–26.4V (±10%), safe for typical 24V devices.
- TS35 DIN RailTS35/7.5 or 15, vertical only.
Specifications
MDR-20-24 Specifications
Output
| DC Voltage | 24V |
| Current | 1A |
| Power | 24W |
| Ripple | 150mVp-p |
| Adjustment | 21.6–26.4V |
| Tolerance | ±1.0% |
Input
| Voltage | 85–264VAC · 120–370VDC |
| Efficiency | 84% |
| No-Load | <0.75W |
Protection
| Overload | Above 105% · Hiccup · Auto-recovery |
| Over Voltage | 27.6–32.4V · Hiccup |
| Over Temperature | Shutdown (unique to MDR-20-24) |
Notes21.6–26.4V ±10% adjustable. DC OK relay contact. Over-temperature protection included. Ripple 150mVp-p.
Dimensions
MDR-20-24 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-20-24 Installation
01 / 06
Vertical Only
Input bottom, output top.
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 earth.
05 / 06
Temperature
−20 to +70°C, derate above 50°C.
06 / 06
Over-Temp Protection
Output shuts down if internal temperature exceeds limit; allow to cool before re-powering.
Wiring
MDR-20-24 Wiring
TB1
| Pin | Assignment |
|---|---|
| 1 | FG |
| 2 | AC/N |
| 3 | AC/L |
TB2 (6 Pins)
| Pin | Assignment |
|---|---|
| 1,2 | +V |
| 3,4 | −V |
| 5,6 | DC OK relay contact |
DC Output21.6–26.4V adjustable. DC OK is a dry relay contact (30V/1A). Over-temperature protection.
Safety
MDR-20-24 Safety & Cautions
- Qualified technician only.
- Do not connect primary and secondary.
- Burn hazard.
- Protect openings.
- FG to PE.
- Do not exceed 1A / 24W.
- Do not use DC OK as power output.
- Disconnect before maintenance.
Applications
MDR-20-24 Industrial Applications
Compact 24V PLCs
24V Sensor Clusters
Relay Coils
Signal Conditioning
Test & Measurement
Building Automation
Security Modules
Compact Cabinets
Next Step
Need the MDR-20-24?
Contact DAPPRA Automation — or explore the full MDR Series.
Support
MDR-20-24 FAQ
What is the DAPPRA MDR-20-24?
The DAPPRA MDR-20-24 (SKU: OE81) is a 24W single-output industrial DIN rail power supply providing 24V DC at 1A from a universal 85–264VAC input, in a 22.5 mm blue plastic housing with 21.6–26.4V +V ADJ, DC OK relay contact and over-temperature protection.
Why is the MDR-20-24 rated 24W when the MDR-20-12 is 20W?
Both are in the "20" power class and share the same 22.5 mm housing, but the 24V model's 1A output yields 24V × 1A = 24W, while the 12V model's 1.67A output yields 12V × 1.67A ≈ 20W. The higher voltage allows slightly more total wattage within the same current-limited design.
What is the over-voltage protection threshold of the MDR-20-24?
Over-voltage protection triggers at 27.6–32.4V (115–135% of 24V). The output enters hiccup mode and recovers automatically after the fault is removed. This threshold sits above the 26.4V maximum adjustment point, so normal potentiometer adjustment will not trigger it.
What is the output voltage adjustment range of the MDR-20-24?
21.6–26.4V via the front-panel +V ADJ potentiometer (±10% of 24V). This is the narrowest adjustment window among the 24V MDR models (MDR-40/60/100 adjust to 30V). It is sufficient for voltage-drop compensation and fine-tuning without exceeding the typical 24V device tolerance.
Does the MDR-20-24 have over-temperature protection?
Yes. The MDR-20-24 includes over-temperature protection in addition to short-circuit, overload and over-voltage protection. If the internal temperature exceeds the safe limit, the output shuts down; allow the unit to cool before re-powering.
What is the typical efficiency of the MDR-20-24?
The MDR-20-24 achieves 84% typical efficiency at 230VAC input and full load, the highest in the MDR-20 series (5V: 76%; 12V: 80%; 15V: 81%).
What is the ripple and noise of the MDR-20-24?
Maximum 150mVp-p, measured at 20MHz bandwidth with a 0.1μF and 47μF parallel capacitor. This is higher than the 5V model (80mVp-p) but typical for a 24V output in this power class.
What is the input voltage range of the MDR-20-24?
85–264VAC single phase (47–63Hz) or 120–370VDC. Do not connect to 380VAC three-phase supply.
What protection functions does the MDR-20-24 include?
Short-circuit protection, overload protection (above 105%, hiccup mode auto-recovery), over-voltage protection (27.6–32.4V, hiccup mode auto-recovery) and over-temperature protection.
Does the MDR-20-24 have a DC OK relay contact?
Yes. TB2 pins 5 and 6 provide a dry DC OK relay contact rated 30V/1A resistive, suitable for direct PLC input.
Is the MDR-20-24 DIN rail mountable?
Yes, TS35/7.5 or TS35/15 DIN rail, 22.5 mm width, vertical orientation only.
What are the dimensions and weight of the MDR-20-24?
22.5 × 90 × 100 mm (W × H × D), approximately 0.18 kg.
What is the terminal pin assignment of the MDR-20-24?
TB1: Pin 1 = FG, Pin 2 = AC/N, Pin 3 = AC/L. TB2 (6 pins): Pins 1,2 = +V; Pins 3,4 = −V; Pins 5,6 = DC OK relay contact.
Can the MDR-20-24 power a 24V PLC and a few sensors?
Yes, if the PLC and sensors' combined steady-state current stays within 1A. Many compact 24V PLCs draw 0.3–0.6A, leaving 0.4–0.7A for sensors and relay coils. If the combined load approaches 1A, step up to the MDR-40-24 (1.7A) for headroom.
What certifications does the MDR-20-24 have?
UL508, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 and AS/NZS 62368.1. Confirm certificate coverage for your destination market.
13 ulasan untuk MDR-20-24 24V 1A 24W AC DC Industrial DIN Rail Power Supply
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