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Mean Well DDR-120C-24 DC-DC Converter - 120W - 33.6~67.2V in 24V out 5A
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Mean Well DDR-120C-24 DC-DC Converter - 120W - 33.6~67.2V in 24V ou...
Overview
DDR-120C-24 is the 24V output model of this series: rated current 5A, rated power 120W, typical efficiency 91%.
DDR-120 series is a 120W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (32mm), 2:1 wide input voltage, fanless design, -40~+70℃ wide operating temperature, 4KVdc I/O isolation, 150% peak load, adjustable output voltage and full protective futore, increasing system insulation level and voltage drop compensation along cable...etc.
Features
- Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
- Width only 32mm
- 2:1 wide input range
- -40~+70℃ wide working temperature
- 150% peak load capability
- DC output adjustable
- 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)
- Conformal coating
- 3 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 24V
- RATED CURRENT
- 5A
- CURRENT RANGE
- 0 ~ 5A
- RATED POWER
- 120W
- PEAK CURRENT
- 7.5A
- PEAK POWERNote.5
- 180W (3sec.)
- RIPPLE & NOISE (max.)Note.2
- 50mVp-p
- VOLTAGE ADJ. RANGE
- 24 ~ 28V
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.5%
- LOAD REGULATION
- ±1.0%
- SETUP, RISE TIME
- 500ms, 60ms @48Vdc
- HOLD UP TIME (Typ.)
- Please refer to page 7 Hold up Time( Load de-rating curve )
INPUT
- VOLTAGE RANGENote.4
- 33.6 ~ 67.2Vdc
- EFFICIENCY (Typ.)
- 91%
- DC CURRENT (Typ.)
- 2.8A @48Vdc
- INRUSH CURRENT (Typ.)
- 5A @48Vdc
- INTERRUPTION OF VOLTAGE SUPPLY
- EN50155:2021-comply with S1 level
PROTECTION
- OVERLOAD
- Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135% rated output power with auto-recovery
- OVER VOLTAGE
- 28.8 ~ 33.6V 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
- 48Vin (C - type) :Power ON≥33.6V , OFF≤33V
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +70℃ (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 ~ 55℃)
- VIBRATION
- Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
- OPERATING ALTITUDE
- 5000 meters
SAFETY & EMC
- SAFETY STANDARDS
- IEC 62368-1, UL 62368-1, EAC TP TC 004, AS/NZS 62368.1 approved; Design refer to UL508
- WITHSTAND VOLTAGE
- I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:>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
-
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 ;Level 3, 2KV/Line-Line-FG ;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 - RAILWAY STANDARD
- Compliance to BS EN/EN45545-2 for fire protection ; Meet BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC
OTHERS
- MTBF
- 1769.5K hrs min. Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 32*125.2*102mm (W*H*D)
- PACKING
- 510g; 28pcs/15.3Kg/1.23CUFT
Test conditions and notes7
- 1. All parameters NOT specially mentioned are measured at normal input (C:48Vdc , D:110Vdc) , 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. 3 seconds max., please refer to peak loading curves.
- 6. 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 )
- 7. 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
Typical applications
- Bus,tram,metro or railway system
- Industrial control system
- Semiconductor fabrication equipment
- Factory automation
- Electro-mechanical
- Wireless network
- Telecom or datacom system
Downloads
FAQ
Can I use the DDR-120C-24 to power 24V automation equipment from a 48V DC distribution system?
Yes. The DDR-120C-24 accepts 33.6–67.2V DC input and delivers 24V at up to 5A (120W). This makes it ideal for converting a 48V facility DC bus to the 24V standard used by most PLCs, sensors, and industrial I/O modules, with 4KVdc input-to-output isolation.
Is the DDR-120C-24 suitable for stepping down 48V telecom power to 24V for auxiliary equipment?
The DDR-120C-24 is well suited for this application. Telecom sites running a 48V bus within the 33.6–67.2V input range can use this converter to power 24V equipment such as alarm panels, environmental monitors, or access systems. The 120W capacity handles most auxiliary loads comfortably.
Can this converter power 24V DIN rail relays and contactors in a solar energy system with a 48V battery bank?
Yes. A 48V battery bank typically varies between roughly 42V and 58V during charge and discharge cycles, which falls within the DDR-120C-24's 33.6–67.2V input range. It provides a stable 24V output at up to 5A for relay coils, contactors, and control circuits in the balance-of-system panel.
Does the DDR-120C-24 generate significant heat in a confined DIN rail enclosure?
At full 120W load the DDR-120C-24 runs at 91% typical efficiency, so some heat is produced by conversion losses. It is rated for -40°C to +70°C ambient, but output must be derated at higher temperatures per the derating curve, so in tightly packed cabinets check the ambient temperature around the unit against that curve.
Can I use the DDR-120C-24 to power 24V LED machine lighting inside CNC equipment?
The DDR-120C-24 can supply 24V at 5A for LED task lighting or machine vision illumination in CNC machines that have a 48V DC internal bus. Its compact 32 mm width conserves panel space, and the 4KVdc input-to-output isolation keeps the lighting circuit separated from the machine's DC bus.
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Other DDR-120C Models
2 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DDR-120C-48 DC-DC Converter - 120W - 33.6~67.2V in 48V out 2.5A | 120W | 48V | 2.5A | IP20 | $68.88 | View |
| Mean Well DDR-120C-12 DC-DC Converter - 120W - 33.6~67.2V in 12V out 10A | 120W | 12V | 10A | IP20 | $68.88 | View |
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