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Samlex 24v to 12v 30 Amp DC to DC Step Down Converter SDC-30

Was: $153.90
Sale Price: $126.95
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Product InformationStore Part Number: SDC-30


The Samlex SDC-30 is a high efficiency switch-mode step-down DC-DC converter. The SDC-30 converts 24v (range 20 VDC to 35 VDC) to a highly regulated output voltage of 12v (13.8 VDC) at 30 Amps. The Samlex America 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.


  • Advanced switchmode design
  • Mount in almost any location
  • Compact and light weight
  • Reverse polarity protection
  • High efficiency
  • Cycle by cycle current limiting circuit
  • Overvoltage protection
  • Short circuit protection


Great for 24v power converter systems trying to run 12v accessories. Typically used on applications such as floor scrubber, scissor lifts, forklifts, and other industrial equipment.

Tech Specs

  • Dimensions (LxWxH): 1.9 x 3.5 x 5.9 in
  • Weight: 1.5 lb
  • Shipping Weight: 2.0 lb
  • DC Output Amps: 35 A
  • Output Amperage, Max Continuous: 30 A
  • DC Output Voltage: 13.8 V
  • AC Input Volts: 20-32 V
  • Manufacturer: Samlex
  • Typical Efficiency: 92%
  • Maximum Power Output, Continuous: 30 A
  • Maximum Power (+/- 3%) @ 25°C: 35 A
  • Ripple and Noise: less than 50 mV RMS
  • Warranty: 2 year
  • Regulatory Approval: EN50081-1, EN50082-1
  • Manufacturer Part #: SDC-30
  • UPC: 622988061745
  • Made In: The Netherlands

Reviews and Ratings

3.50 Average
5 Stars 0
4 Stars 1
3 Stars 1
2 Stars 0
1 Stars 0
Rated 3.50/5 Stars from 2 customer reviews.

Do you own the SDC-30? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

Good product so far
Pros: This unit is small and compact it works great in the space where we installed it. It also seems to be fairly rugged. We like the units internal cooling fan, we were affraid we would have to design a cooling system for it. I also believe that the item was shipped the same day as I had ordered it.
Cons: When ordering, I was not asked for a shipping address only billing. It was shipped to our unmanned fire station, the delivery company hung it on the door knob in a plastic bag.
We installed this into a surplus military 5 ton truck that we are revamping into an off road firetruck. The trucks electrical system is 24V, we are running the 12V radio and siren with this unit. So far it works great, but we are not done with the restoration of the truck, and have not put it into service as of this review.
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Written by on Jan 21, 2012. Ownership: Just Bought. Knowledge Level: AC/DC is more than a band — (86 of 167 customers found this review helpful
SDC-30 Step Down Converter 24VDC to 12VDC
Pros: good price, small size
Cons: connector tabs are too small to easily accept spade conductors, especially if oversized wire is needed. I'd prefer good screw-down lugs, big enough for 8 gauge wire. Computer-style pancake cooling fans may emit an irritating high frequency sound.
I was double charged due to the item being on back order when I purchased it. When it finally shipped, the second charge was put thru. I got i all squared away with one phone call, but BatteryStuff needs to catch these things internally, BEFORE it gets to my credit card!
Is this review helpful?
Written by on Oct 19, 2012. Ownership: Just Bought. Knowledge Level: AC/DC is more than a band — (85 of 163 customers found this review helpful

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