MPN

MEAN WELL DC-DC Converter, 12V dc/ 40A Output, 72 → 144 V dc Input, 500W, Chassis Mount, +60°C Max Temp -20°C

RS Stock No.:: 678-3666
Mfr. Part No.:: SD-500H-12
Brand:: MEAN WELL

MEAN WELL DC-DC Converter, 12V dc/ 40A Output, 72 → 144 V dc Input, 500W, Chassis Mount, +60°C Max Temp -20°C

Bulk discount available

Subtotal (1 unit)*

$282.50

(exc. GST)

$324.88

(inc. GST)

FREE delivery for orders over $60.00 ex GST

Temporarily out of stock

1 unit(s) shipping from 27 January 2026
Plus 4 unit(s) shipping from 23 March 2026
Plus 4 unit(s) shipping from 20 April 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 - 4	$282.50
5 - 9	$268.39
10 - 24	$254.97
25 - 124	$242.23
125 +	$230.12

*price indicative

RS Stock No.:: 678-3666
Mfr. Part No.:: SD-500H-12
Brand:: MEAN WELL

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	MEAN WELL
	Output Voltage	12V dc
	Input Voltage Range	72 → 144 V dc
	Power Rating	500W
	Input Voltage Nominal	96 V dc
	Output Current	40A
	Mounting Type	Chassis Mount
	Isolated	Yes
	Number of Outputs	1
	Output Voltage Adjustment Range	11 → 15V
	Isolation Voltage	2kV ac
	Depth	50mm
	Width	115mm
	Length	215mm
	Load Regulation	±0.5%
	Minimum Temperature	-20°C
	Standards Met	3, 4, 5, 6, 8, EN 55022 (CISPR22) Class B, EN 61000-4-2, ENV 50204, Heavy Industry Level Criteria A
	Maximum Temperature	+60°C
	Efficiency	87%

	Select all
	Brand MEAN WELL
	Output Voltage 12V dc
	Input Voltage Range 72 → 144 V dc
	Power Rating 500W
	Input Voltage Nominal 96 V dc
	Output Current 40A
	Mounting Type Chassis Mount
	Isolated Yes
	Number of Outputs 1
	Output Voltage Adjustment Range 11 → 15V
	Isolation Voltage 2kV ac
	Depth 50mm
	Width 115mm
	Length 215mm
	Load Regulation ±0.5%
	Minimum Temperature -20°C
	Standards Met 3, 4, 5, 6, 8, EN 55022 (CISPR22) Class B, EN 61000-4-2, ENV 50204, Heavy Industry Level Criteria A
	Maximum Temperature +60°C
	Efficiency 87%

SD- 500 Series Single Output Enclosed Regulated Isolated DC-DC Converter

High reliability
Ultra-wide 4:1 input voltage range
Regulated outputs
Easy installation - screw terminals
Adjustable output voltage
EMC meets EN 55022 Class B
Forced air cooling by built-in fan
Remote ON/OFF control
Remote sense
LED power-on indicator
Short circuit, over-load, over-voltage and over-temperature protection
2kV input / output isolation

Note

De-rating above 50°C (stk no. 491-267 de-rates above 45°C).
MTBF to MIL-HDBK-217F (25°C).

Standards

IEC 60950-1

Approvals

CB, TUV