This site uses cookies to deliver our services and provide a basic level of website functionality. The four different types of cookies are: Strictly Necessary cookies, Functionality cookies, Performance cookies and Advertising cookies. By checking the box and clicking the button below, you are informing Rapid Electronics Ltd that you agree to the use of these cookies as detailed in our Privacy Policy.

Industry Schools FE/HE Site: Industry Site: Schools Site: FE/HE Site: Mobile
  +44 (0)1206 751166  

Rapid SMPS 25A/40A

<p>A range of high power switch mode power supplies 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. Models are available with either 25A or 40A outputs.</p>
  • The PSUs are 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 EN60950, EN55022, EN61588 (25A version) and EN5011 (40A version)
85-182485-1828
25A40A
Variable output voltage3V to 15V DC3V to 15V DC
Fixed voltage mode13.5V DC13.5V DC
Ripple and noise50mV50mV
Load regulation200mV200mV
Line regulation50mV50mV
Efficiency>78%>78%
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
Weight2.7kg3.5kg


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


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


01 August 2013 Question by: Chris
Q. REF - SMPS 25A/40A Would it be suitable to conect a 12v vehicle tyre inflator to these units ?
A. Hi Chris. Thank you for your question. I'm sure this would be fine as long as set to 12 volts and the air pump was 12V.


19 June 2013 Question by: DAVID EATON
Q. will the 40A model power a water pump requiring 30A at 12vdc.
A. Hi David. Thank you for your question. The 40 amp version will be able to supply the necessary current (85-1828), however these are designed for internal use only and normally in a workshop environment.


21 March 2013 Question by: Rob Lyon
Q. Hi guys, As a followup to the previous question asked about this product, would it be possible to link three together in series to provide 42V at 10-20A or is there a limit of two?
A. Hi Rob. Thank you for your question. It is possible to link up 3 in series.


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