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Mean Well DDR-30L-5 DC-DC Converter - 30W - 18~75V in 5V out 6A

2:1 or 4:1 wide input rangefanless design4KVdc I/O isolationultra slim dimensions

SKU DDR-30L-5

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Select model — 6 in this family

DDR-30L-5

DDR-15G-5 - 5V out - 9~36V in Low stock

DDR-15L-5 - 5V out - 18~75V in Backorder

DDR-30G-5 - 5V out - 9~36V in Low stock

DDR-30L-5 - 5V out - 18~75V in Backorder

DDR-60G-5 - 5V out - 9~36V in Backorder

DDR-60L-5 - 5V out - 18~75V in Backorder

Product variants

Available to order

Overview

DDR-30L-5 is the 5V output model of this series: rated current 6A, rated power 30W, typical efficiency 86%.

DDR-30 series is a 30W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (35mm), 4:1 ultra wide input voltage, -40~+85℃ wide operating temperature, 4KVdc I/O isolation, adjustable output voltage ( 10%) and full protective functions..etc. This series has two input options: 9~36V /18~75V and various output options: 5V / 12V / 15V / 24V and can be used for industrial control, security control, communication system and other fields. Suitable applications are DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

Width only 35mm (2SU)
4:1 ultra wide input range
-40~+85℃ wide working temperature
No minimum load required
DC output adjustable (±10%)
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
Protections: Short circuit / Overload / Over voltage / Input reverse polarity / Input under voltage protection
4KVdc I/O isolation(Reinforced isolation)
3 years warranty

Specifications

DDR-30L-5Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 5V
RATED CURRENT: 6A
CURRENT RANGE: 0 ~ 6A
RATED POWER: 30W
RIPPLE & NOISE (max.)^Note.2: 60mVp-p
VOLTAGE ADJ. RANGE: 4.5 ~ 5.5V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.5%
SETUP, RISE TIME: 120ms, 85ms at full load
HOLD UP TIME (Typ.): L-type: 18ms@48Vdc input
EXTERNAL CAPACITANCE LOAD (Max.): 3300μF

INPUT

VOLTAGE RANGE^Note.4: 18 ~ 75Vdc
EFFICIENCY (Typ.): 86%
DC CURRENT (Typ.): 0.8A /48Vdc
INRUSH CURRENT (Typ.): 15A /48Vdc

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE: 5.75 ~ 7V Protection type : Shut down o/p voltage, re-power on to recover
REVERSE POLARITY: By internal MOSFET, no damage, recovers automatically after fault condition removed
UNDER VOLTAGE LOCKOUT: 24Vin (G-type):Power ON≥9V , OFF≤8.5V 48Vin (L-type):Power ON≥18V , OFF≤17V

ENVIRONMENT

WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 5 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 5 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃ )
VIBRATION: Component:10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6
OPERATING ALTITUDE: 5000 meters

SAFETY & EMC

SAFETY STANDARDS: UL/IEC 62368-1 ,AS/NZS 62368.1 approved; Design refer to UL508
WITHSTAND VOLTAGE: I/P-O/P:4KVdc
ISOLATION RESISTANCE: I/P-O/P>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 Class B
Radiated BS EN/EN55032 Class B
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY^{Note 5}: BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line; criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	Class B
Radiated	BS EN/EN55032	Class B
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line; criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 2780.3K hrs min. Telcordia SR-332 (Bellcore) ; 483.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 35*90*54.5mm (W*H*D)
PACKING: 0.12Kg;96pcs/12.5Kg/1.1CUFT
UL: UL62368-1

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at normal input (G:24Vdc, L:48Vdc), rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltage. Please check the derating curve for more details.
5. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

DDR-30L-5 Derating Curve — Derating Curve

DDR-30L-5 Mechanical Specification — Mechanical Specification

Typical applications

Downloads

Certificates3

CE Certificate(DDR-30)(EN) PDF Download

UL Certificate(DDR-30)(EN) PDF Download

EMC Certificate(DDR-30)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the DDR-30L-5 to supply 5V logic power to microcontroller-based monitoring boards in an industrial panel?

Yes. The DDR-30L-5 delivers 5V at up to 6A (30W), which is enough to power several microcontroller boards, small single-board computers, or logic-level I/O modules. Its 18-75V DC input accepts 24V or 48V panel buses (derating may be needed at low input voltage), and the 4KVdc isolation protects sensitive digital circuits from bus-side noise.

Is the DDR-30L-5 a good choice for converting a 48V battery bus to 5V for USB charging stations in a mobile or marine installation?

Yes. With 30W at 5V and 6A output, it can supply multiple USB charging ports simultaneously. The 18-75V input range covers 48V battery systems (typical 40-58V range), and the -40°C to +85°C working temperature (with load derating at high ambient) suits vehicle, marine, or off-grid installations, provided it is mounted where humidity stays non-condensing.

Can the DDR-30L-5 power 5V LED indicator strips or small display panels in a DIN rail cabinet?

Yes. At 5V and 6A it provides enough current for addressable 5V LED strips or small LCD/OLED display modules used in status panels. The DIN rail mount and 35mm slim width make it easy to integrate into existing cabinets without taking up significant space.

Will the DDR-30L-5 handle the wide temperature swings of an outdoor telecom cabinet?

Yes. It is rated for a working temperature of -40°C to +85°C, which covers the temperature range of outdoor telecom shelters and roadside cabinets in most climates; at the hot end, load must be derated according to the derating curve. The unit should be housed in an appropriate enclosure since it does not carry an IP ingress rating, and humidity is rated 5-95% RH non-condensing.

How does the DDR-30L-5 differ from the DDR-30G-5 in terms of input range?

Both models output 5V at 6A (30W) and share the same DIN rail form factor. The DDR-30L-5 accepts 18-75V DC input, designed for 48V bus systems. The DDR-30G-5 accepts 9-36V DC input, designed for 12V or 24V bus systems. Choose based on your upstream DC bus voltage.

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Model	Power	Voltage	Current	IP Rating
Mean Well DDR-30L-24 DC-DC Converter - 30W - 18~75V in 24V out 1.25A	30W	24V	1.25A	IP20	View
Mean Well DDR-30L-15 DC-DC Converter - 30W - 18~75V in 15V out 2A	30W	15V	2A	IP20	View
Mean Well DDR-30L-12 DC-DC Converter - 30W - 18~75V in 12V out 2.5A	30W	12V	2.5A	IP20	View

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