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Mean Well SD-350D-24 DC-DC Converter - 350W - 72~144V in 24V out 14.6A
Overview
SD-350D-24 is the 24V output model of this series: rated current 14.6A, rated power 350.4W, typical efficiency 87%.
Features
- 2:1 wide input range
- Protections: Short circuit / Overload / Over voltage / Over temperature
- 1500VAC I/O isolation
- Forced air cooling by built-in DC Fan
- 100% full load burn-in test
- 24V and 48V input voltage design refer to LVD
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 24V
- RATED CURRENT
- 14.6A
- CURRENT RANGE
- 0 ~ 14.6A
- RATED POWER
- 350.4W
- RIPPLE & NOISE (max.)Note.2
- 150mVp-p
- VOLTAGE ADJ. RANGE
- 23 ~ 30VDC
- VOLTAGE TOLERANCENote.3
- ±1.0%
- LINE REGULATION
- ±0.2%
- LOAD REGULATION
- ±1.0%
- SETUP, RISE TIME
- 300ms, 50ms at full load
INPUT
- VOLTAGE RANGE
- 72 ~144VDC
- EFFICIENCY (Typ.)
- 87%
- DC CURRENT (Typ.)
- 6A/96V
- INRUSH CURRENT (Typ.)
- 45A/96VDC
PROTECTION
- OVERLOAD
- 105 ~ 135% rated output power Protection type : Shut down o/p voltage, re-power on to recover
- OVER VOLTAGE
- 31.5 ~ 37.5V Protection type : Shut down o/p voltage, re-power on to recover
- OVER TEMPERATURE
- Shut down o/p voltage, recovers automatically after temperature goes down
ENVIRONMENT
- WORKING TEMP.
- -20 ~ +60℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC (Note 4)
- SAFETY STANDARDS
- IEC/BS EN/EN 62368-1, EAC TP TC 004 approved, design refer to AS/NZS 62368.1
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- ISOLATION RESISTANCE
- I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to BS EN/EN55022 (CISPR22) Class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, light industry level, EAC TP TC 020
OTHERS
- MTBF
- 1705.6K hrs min. Telcordia SR-332 (Bellcore) ; 263.9K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 215*115*50mm (L*W*H)
- PACKING
- 1.1Kg; 12pcs/14.4Kg/0.9CUFT
Test conditions and notes5
- 1. All parameters NOT specially mentioned are measured at 24,48,96VDC input, 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. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets 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 )
- 5. 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
Downloads
FAQ
Can I use the SD-350D-24 for 24V PLC, HMI, and automation loads on a 72-144V system?
Yes, it converts a 72-144V input to a constant 24V output rated for 14.6A and 350.4W. That makes it suitable for 24V automation loads as long as the total load stays within those output limits.
Is the SD-350D-24 a good match for 24V industrial control circuits in higher-voltage equipment?
It is intended for exactly that type of voltage step-down, providing regulated 24V power from a 72-144V source. Available output capacity is 14.6A, with 350.4W maximum output power.
Can this converter supply multiple 24V sensors, relays, or controller modules from one bus?
Yes, multiple 24V loads can be supported if their combined demand does not exceed 14.6A and 350.4W. Because it is a constant-voltage model, it is meant for equipment designed to run from a fixed 24V supply.
Is the SD-350D-24 suitable for outdoor cabinets or only temperature-controlled spaces?
The operating temperature range is specified as -20°C to +60°C, so those are the defined thermal conditions. The specs do not list an IP rating, so protection against rain, spray, or dust ingress is not stated and outdoor exposure should not be assumed.
What are the SD-350D family options around the SD-350D-24?
The SD-350D family listed here includes SD-350D-12 at 350.4W, 12V, 29.2A; SD-350D-24 at 350.4W, 24V, 14.6A; SD-350D-48 at 350.4W, 48V, 7.3A; and SD-350D-5 at 300W, 5V, 60A. This model is the 24V version and sits between the 12V and 48V options in output current.
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