DIN RAIL SWITCHING POWER SUPPLY

DR-120

120W DIN Rail Switching Power Supply

Industrial DIN rail AC/DC switching power supply available with 12V, 24V and 48V DC output versions for industrial control, automation systems, control cabinets and electrical equipment.

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120W Rated Power

12–48V Output Voltage Options

88–264VAC AC Input Range

Up to 85% Efficiency

65.5 × 125.2 × 100 mm Overall Dimensions

PRODUCT OVERVIEW

DR-120 DIN Rail Power Supply

The DR-120 Series provides three DC output voltage versions: 12V, 24V and 48V. All three models provide 120W rated output power.

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Wide AC Input

88–264VAC or 248–370VDC input range.

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Three Output Versions

12V, 24V and 48V DC output options.

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DIN Rail Design

Industrial enclosure designed for DIN rail cabinet installation.

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Industrial Protection

Built-in overload, overvoltage and over-temperature protection.

OUTPUT SPECIFICATIONS

DR-120 Model Range

Electrical output specifications for each available voltage version.

Specification	DR-120-12	DR-120-24	DR-120-48
DC Voltage	12V	24V	48V
Output Voltage Tolerance	±2%	±1%	±1%
Rated Current	10A	5A	2.5A
Current Range	0–10A	0–5A	0–2.5A
Ripple & Noise	80mVp-p	80mVp-p	100mVp-p
Line Regulation	±0.5%	±0.5%	±0.5%
Load Regulation	±1%	±1%	±1%
Rated Power	120W	120W	120W
Efficiency	80%	84%	85%
Voltage Adjustment Range	10.8–13.2V	21.6–26.4V	43.2–52.8V
Overvoltage Protection	15–16V	29–33V	58–62V
Overtemperature Protection	85°C ± 5°C (TSW1)	90°C ± 5°C (TSW1)	90°C ± 5°C (TSW1)

TECHNICAL DATA

General Specifications

Input

Voltage Range 88–264VAC / 248–370VDC

Frequency Range 47–63Hz

AC Current 1.8A / 115VAC, 0.9A / 230VAC

Inrush Current 30A / 115VAC, 60A / 230VAC, cold start

Leakage Current < 3.5mA / 240VAC

Timing

Start / Rise / Hold Time 500ms / 70ms / 30ms at 230VAC

Environment

Working Temperature / Humidity -10°C to +60°C, 20–95% RH

Storage Temperature / Humidity -20°C to +85°C, 10–95% RH

Temperature Coefficient ±0.03% / °C (0–50°C), on +5V output

Vibration 10–500Hz, 2G, 10 min/cycle; X, Y and Z axes, 60 min each

Safety & Mechanical

Withstand Voltage I/P–O/P: 1.5KVAC;
I/P–FG: 1.5KVAC;
O/P–FG: 0.5KVAC

Isolation Resistance 100MΩ / 500VDC

Dimensions 65.5 × 125.2 × 100 mm

Weight / Packaging 0.8kg;
20pcs / 16kg / 1.1CUFT

Safety Standards

Safety Norms Meets the requirements of UL1012 (do not apply for marking)

Design Features

Cooling Natural convection cooling

Construction Compact size and lightweight design

EMI Filter Built-in EMI filter

Burn-in Test 100% full-load burn-in test

Compliance Meets FCC Part 15J Condition Grade B

PROTECTION

Built-in Protection Functions

Overload Protection

Protection operates at approximately 105%–150% of rated output power. Foldback power limiting protection is used. The power supply automatically restores operation after the abnormal load condition is removed.

Overvoltage Protection

Overvoltage protection levels are 15–16V for DR-120-12, 29–33V for DR-120-24 and 58–62V for DR-120-48.

Overtemperature Protection

Over-temperature protection is specified at 85°C ± 5°C for DR-120-12 and 90°C ± 5°C for DR-120-24 and DR-120-48, measured at TSW1.

Short Circuit Protection

Built-in short-circuit protection helps protect the power supply and connected equipment under abnormal output conditions.

MECHANICAL DIMENSIONS

DR-120 Dimension Drawing

DIN rail enclosure and mounting dimensions.

Overall Size: 65.5 × 125.2 × 100 mm

DIMENSIONS IN MILLIMETERS

APPLICATIONS

Typical Applications

Industrial Control DIN rail DC power for industrial control systems.

Control Cabinets 120W power supply for electrical control panels.

Automation Systems 12V, 24V and 48V DC power for automation equipment.

Industrial Equipment DIN rail power for machinery and electrical systems.

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