MEAN WELL SD-350B-12 12V 330W DC-DC Converter Power Supply – 27.5A Output

Description

Product Overview
The MEAN WELL SD-350B-12 is an enclosed, single-output DC-DC switching converter designed for applications that need a stable 12V DC supply from a higher-voltage DC source. Its 19–36V DC input range makes it suitable for compatible 24V nominal battery systems and other DC power applications.
The unit provides up to 27.5A at 12V, with a rated output power of 330W. Its metal enclosure, built-in cooling fan and electrical protection features support integration into suitable industrial and electronic systems.

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Technical Specifications
Specification Details
Brand MEAN WELL
Model SD-350B-12
Product type Enclosed DC-DC switching converter
Rated output voltage 12V DC
Rated output current 27.5A
Rated output power 330W
DC input voltage range 19–36V DC
Output voltage adjustment 11–16V DC
Typical efficiency 80%
Maximum ripple and noise 120mV peak-to-peak
Input-to-output isolation 1500VAC
Cooling Built-in DC fan, forced-air cooling
Protections Short circuit, overload and overvoltage
Operating temperature −20°C to +60°C, with output derating
Dimensions 215 × 115 × 50 mm
Mounting Enclosed chassis mount
Warranty listed by manufacturer 2 years
Specifications are based on MEAN WELL’s SD-350 series documentation. Confirm the current datasheet and installation requirements for the exact unit before installation.

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Key Features
– 12V DC output: Supplies a nominal 12V DC output for compatible equipment.
– 330W rated power: Supports loads within the specified output limits.
– Wide DC input range: Accepts 19–36V DC, suitable for compatible higher-voltage DC sources.
– High-current output: Provides up to 27.5A at the rated 12V output.
– Forced-air cooling: Uses a built-in fan to help manage operating temperature.
– Input-to-output isolation: Provides 1500VAC isolation as specified by the manufacturer.
– Built-in protection: Includes short-circuit, overload and overvoltage protection.
– Adjustable output voltage: Allows adjustment within the specified 11–16V DC range.

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Applications
The MEAN WELL SD-350B-12 can be used in suitable systems such as:
– 24V nominal battery systems requiring a 12V output.
– Industrial electronic equipment.
– DC-powered control and monitoring systems.
– Telecommunications and compatible electronic installations.
– Battery-backed equipment and DC power distribution.
– Machinery and other systems requiring a regulated 12V supply.
Application suitability depends on the source voltage, load current, installation conditions and equipment requirements.
Installation and Compatibility Guidance
Before installation, verify that the input source remains within 19–36V DC and that the connected load does not exceed the rated 12V output and 27.5A current limit. Allow adequate ventilation around the enclosure and built-in fan. Follow the manufacturer’s wiring diagram, polarity markings and safety instructions.
Important: The SD-350B-12 is a DC-to-DC converter. It does not accept ordinary 110V or 230V AC mains input. Do not confuse it with an AC-to-DC power supply or the SD-350B-24 model, which has a different output voltage.

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UAE Availability and Quotation
Dynavation Star Electrical Fittings Trading LLC supplies electronic components and power solutions to customers across the UAE. Contact the team to confirm the exact model, current price and availability.
Contact Dynavation Star on WhatsApp for a quotation