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Rapid SPS-9400-209MG SMPS(Switch Mode Power Supply) 15V 40A with Digital Display

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Buy SMPS (Switch Mode Power Supply) 15V 40A with Digital Display - a high power switch mode power suppliy housed in a lightweight and compact enclosure with digital LED displays for voltage and current readings.

Output is adjustable from 3V to 15V with the ability to fix the output at 13.8V via a slide switch on base of unit.

Incorporating the following features: 230Vac supply voltage, dual outputs, 3 to 15Vdc 1st output voltage, 13.8Vdc 2nd output voltage, 40A 1st output current, LED display, 200mV load regulation, 50mV, 3.5kg weight, high efficiency, floating ground design, light weight, small size, overload temperature protection, constant current protection, over voltage protection at 16.5V, variable speed thermally controlled fan, high RFI stability, power factor correction, radio equipment, high power car stereo

  • The PSU is fully protected with overload, over temperature, over voltage (set at 16.5V) and short circuit protection as standard
  • A thermally controlled, variable speed fan ensures quiet and cool operation
  • CE approved to EN5011

Variable output voltage3V to 15V DC3V to 15V DC
Fixed voltage mode13.5V DC13.5V DC
Ripple and noise50mV50mV
Load regulation200mV200mV
Line regulation50mV50mV
Power factor correction>0.95 at optimal load>0.95 at optimal load
V meter range3x LED3x LED
A meter range3x LED3x LED
Dimensions220 x 110 x 220mm220 x 110 x 300mm

Question by dav | Product code: 85-1828
01 August 2016

Q how many watts
A Hi Dav, thank you for your question. This will give a max of 15V at 40A. Power is volts x amps, therefore the power is 600W.

Question by Renee Wang | Product code: 85-1828
20 April 2016

Q What current range does it provide? ie does it have a 3-15v / 0-25A and a 3-15 v / 0-40A output?
A Hi Renee, thank you for your question. 85-1828 is a 3 to 15V 40A switch mode power supply.

Question by Glenn Atterton | Product code: 85-1828
08 July 2015

Q Can you tell me what the values are for over volt and amp draw please
A Hi Glenn, thank you for your question. This unit has an over volt protection rated at 16.5V the manufacturer does not mention any over current protection for this unit, please see the data sheet for more information.

Question by Andrew Lord | Product code: 85-1828
20 May 2014

Q I would like to know if this power supply could cope with swinging current demand. I want to use it on a 3D printer and the problem is the heated bed which draws around 10 amps. It switches on and off by thermostatic control. Does this power supply expect the current draw to be constant.
A Hi Andrew. Thank you for your question. This switched mode bench supply should be able to cope with the intermittent current demands you speak of.

Question by kyle stocks | Product code: 85-1828
28 September 2011

Q hi can two of these be used in series for 30 volt 40 amp? i have one of your 30v 30 amp version but would need 2 of these if i cannot use the smaller ones in series as i need to run two chargers using 20 amp each but need to run at 28v thanks
A Hi Kyle Thank you for you enquiry - there is no reason why you can't do this for the supply side - on the charger side they would need to be connected in parallel

Great for 3D printing
Reviewed by: Andrew
29 May 2014

I bought this to power a 3d printer. From the forums for 3d printers it appeared that the power requirements could be around 20 amps. The 40 amp version of the power supply was plenty and works well. I would recommend this PSU for 3d printing.

Great PSU
Reviewed by: G8YTZ
06 May 2012

I have the 40A version of this PSU. I am a Radio Ham so I usually shy away from switch mode PSU's due to issues with RF noise generation. I have two Linear 24A Yaesu FP1030's for my two 100W radio sets, but I needed a higher current device to run my high power Digital ATV transmitter. I was suprised at first to notice tat the fan runs contineously, but as it is so quiet this is not a poblem. The PSU runs cool, it easily copes with contineous current at 15A there is no dicernable RF noise generation and it s pervectly stable in an environment with RF amplifiers. I now want tompurchase the 30v/30A version for another amplifier, so hurry up Rapid and get this model back in stock! Recommended PSU.

Fantastic unit
Reviewed by: Nick
17 February 2012

I have been using one of these on a professional basis for 5 years now on a daily basis charging batteries and powering motor vehicle systems whilst they are being worked on or configured . No problems at all and never get warm even . great for automotive use when the pre-set 13.8v switch is used . The unit is always in demand and moved about from job to job .. Highly recommended ..great value for money...

Fantastic unit and excellent build quality.
Reviewed by: remeeraz
17 February 2012

This is an excellent PSU, it's very stable - the voltage doesn't drift, it performs within the specifications well and the build quality is very good and sturdy. Perfect for any low voltage high current application : eg. CB Radios, Model Railways and Slot Cars, LiPo / LiFe Battery Chargers It has a single 80mm cooling fan mounted on the rear panel of the unit which unfortunately doesn't appear to be load or heat controlled so runs continuously even off load but isn't noisy. The unit has an average Efficiency Rating of over 80% and as this is probably at max load, I would assume it is much greater at lower demands. I would highly recommend this unit for any workshop or hobbyist situation.

EXcelent power supply
Reviewed by: Robin
11 February 2012

We acquired 4 of these units to power our 4 lane slotcar track that runs cars that draw 1-12 amps. Have been using these over a year now and no issues! excelent price.