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Samlex SDC-30 30A DC-DC Non-Isolated Converter

by Samlex America

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Samlex America, DC-DC Non-Isolated Converter, 20-32V to 13.8V, 30A, SDC-30

This high efficiency switch-mode step-down DC-DC converter converts an input voltage of 24 VDC nominal (range 20 VDC to 32 VDC) to a highly regulated output voltage of 12 VDC nominal (13.8 VDC) at 30 Amps. The SDC-30 DC-DC converter is non-isolated (no galvanic isolation between input and output) and meant for use in negative ground systems. Features include overload, over-heating, reverse polarity and over-voltage protection.


  • Highlights - Advanced switch mode design. Mounts in almost any location. Compact and light weight. Reverse polarity protection. High efficiency. Cycle by cycle current limiting circuit. Over voltage protection. Short circuit protection.
Product Information
  • Manufacturer: Samlex America
  • Power: 12V to 30V DC or 24VAC; Quiescent Current < 10mA; Relay Current < 25mA Each @12V
  • Weight: 1.50 lbs
  • Cooling: Temperature Controlled Fan
  • Emission: EN50081-1 / EN61000-6-3
  • Humidity: Maximum 95%, Non-Condensing
  • Immunity: EN50082-1 / EN61000-6-1
  • Mounting: 2 Screws Through Tabs
  • Overload: By Current Limiting
  • Automotive: 95/54/EC
  • Dimensions: 1.90 x 3.50 x 5.90 inches
  • Efficiency: 92%
  • Technology: DC-DC Converter
  • Connections: Quantity (28) 1/4
  • Crank Delay: 0 to 60 Seconds
  • Load Pre-Off: 0 to 120 Seconds
  • Over Heating: Drop in Output Voltage
  • Over Voltage: Varistor (Also Protects Against Load Dump)
  • Input Voltage: 20 to 32 VDC
  • Maximum Crank: 0 to 60 Seconds
  • On-Off Inputs: Grounded Input = On Condition; Open Input = Off Condition
  • Battery Charge: Cut-In Voltage: 0 to 60VDC; Cut-Out Voltage: 0 to 60VDC
  • Output Ratings: Quantity (5) 10 Amp 28VDC, 240VAC Relay Contacts; Quantity (2) Open Collector NPN Transistors, Maximum 200mA Each
  • Output Voltage: 13.8 VDC ± 0.1 Volts
  • Voltage Inputs: 0-60 VDC
  • Fault Detection: 5 Conditions at Lock Out Generator
  • Frequency Input: 120-300V AC 0-100 Hz
  • Input Side Fuse: 30 Amps (Inside the Unit)
  • Maximum Runtime: 12 Hours in Automatic Start (May Be Overridden)
  • Reverse Polarity: Fuse Protection, 30 Amps
  • Ambient Temperature: -30°C to +70°C
  • Load Transfer Delay: 0 to 60 Seconds
  • Over Speed Shutdown: 15 to 75 Hz
  • Under Speed Shutdown: 15 to 75 Hz
  • Operating Temperature: -20°C to +30°C (De-Rate Linearly to Zero at 70°C)
  • Rank / Crank Discount: 15 to 75 Hz
  • 30 Day Exercise Runtime: 0 to 1 Hour
  • Output Ripple and Noise: Less Than 50 mV RMS
  • Input Current at No Load: < 25 mA
  • Input/Output Connections: Terminal Block - 6.3mm Male Flat Tab, Quick Connect
  • Continuous Output Current: 30 Amps
  • Input to Output Isolation: Not isolated. Input and output connections have a common negative.
  • Output Voltage Regulation: 3%
  • Current Limit Output Current: 35 Amps
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Samlex SDC-30 30A DC-DC Non-Isolated Converter

Samlex SDC-30 30A DC-DC Non-Isolated Converter

by Samlex America

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Samlex SDC-30 30A DC-DC Non-Isolated Converter

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