What are the actual dimensions of the power supply?

Dimensions of the Siglent SPD3303C - from our website: 275×225×136 mm

I want to control this from my own windows program. does it enumerate as a com port that i can send and receive text commands? i don't use labview.

Yes, and it takes standard SCPI commands. Works great for this, I’ve been controlling mine with Python/PySerial.

Can the outputs be connected in series to produce higher voltages?

Yes, in series mode, it can output 60 volts, but not 64 v as you might expect, which would be twice the 32 v that it outputs in independent or parallel mode. I don't know why it limits to 60 volts in series mode, but it will output 60 v at 3.2 amps

Can this bench power supply negative voltages?

The SPD3303C is an FLOATING unipolar power supply - like a battery. The red terminal is always more positive than the black terminal. Here is some more information https://siglentna.com/operating-tip/spd-wiring/

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Siglent Technologies SPD3303C DC Power Supply

Product ID: 41250234

Details

Amperage
3 A
Brand
Siglent
Connector Type
usb
Form Factor
Benchtop or
Item Weight
7.56 kg

⚡220W max power output

💻USB interface with PC control

🔌Triple independent outputs

$2841

Duties & taxes included

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Description

⚡ Empower your bench with precision and control!

SEAMLESS PC INTEGRATION - USB interface and Easy Power software for intuitive remote control and automation
WHISPER QUIET OPERATION - Intelligent temperature-controlled fan minimizes noise, keeping your workspace distraction-free
CRYSTAL CLEAR MONITORING - Four displays provide real-time voltage and current readouts for channels 1 & 2
TRIPLE OUTPUT FLEXIBILITY - Two adjustable channels plus one fixed voltage channel for versatile setups
POWER YOUR PROJECTS WITH PRECISION - 220 watts of clean, stable power for demanding applications

The Siglent SPD3303C is a high-performance benchtop DC power supply delivering up to 220 watts across three independent outputs. Featuring USB connectivity and Easy Power software, it offers precise voltage and current control with real-time digital displays. Its intelligent fan ensures quiet operation, making it ideal for professional engineers and tech-savvy managers seeking reliable, versatile power solutions.

Specifications

ASIN	B01HENYNZS
Amperage	3 A
Best Sellers Rank	#1,502 in Computer Power Supplies
Brand	Siglent
Connector Type	usb
Connector Type Used on Cable	usb
Customer Reviews	4.2 out of 5 stars 74 Reviews
Form Factor	Benchtop or Rackmount
Global Trade Identification Number	00713839551352
Item Dimensions	16 x 14 x 11 inches
Item Weight	7.56 kg
Item dimensions L x W x H	16 x 14 x 11 inches
Manufacturer	Siglent Technologies
Maximum Power	220 watts
Mfr Part Number	SPD3303C
Model Number	SPD3303C
Output Wattage	220 watts
UPC	713839551352
Unit Count	1 Count
Warranty Description	2. All Siglent test instruments come with a 3-year warranty on parts and labor, with the following exceptions – Specifications within published tolerances, accessories and batteries come with a one-year warranty. Software options that have been installed on an instrument (activated) cannot be returned, refunded, or exchanged.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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