Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

24Vdc Relay for a DC load of 2A 600V

Status
Not open for further replies.

brunofunchas

Full Member level 3
Joined
Jul 1, 2009
Messages
168
Helped
10
Reputation
20
Reaction score
7
Trophy points
1,298
Location
Portugal
Activity points
2,348
Hello!

Is there any 24Vdc coil relay with a NC contact that can open a DC load of 2A 600V?

I have search but could only find with NO!

Thanks,
Bruno
 

Maybe you want a 24V relay controlling the coil of a big boy?

24V is common for HVAC applications but those tend to be
240V inductive, maybe not rated for 600V continuous.

Look for a relay that has a surplus (like SPDT or DPDT instead
of SPST-NC) and just ignore what you don't need?
 

600V 2A DC capable relays respectively contactors are available but not small. They need a means to relinquish the arc.
 

Low amp DC is a good candidate for solid state solutions, here is an example of something close:
AQAD171DL


This depletion fet is normally on. 2 in series back-to-back for AC blocking with a photovoltaic gate driver to make them go open is a good custom solution. Heatsinking required.
IXTH6N100D2
https://www.vishay.com/ppg?83469
 

DC load of 2A 600V?...

You need a regular contactor; a conventional AC relay rated at 440VAC may not be suitable.

The problem is with the arcing at the contacts; for AC loads, the arcing will last at most 1/2 cycle (that is when the voltage goes down to zero). And you need to derate them for inductive loads.

For DC loads, the arc will get extinguished only when the contacts move far away (magnetic quenching of the arc is common for small contactors). These contactors are available but you can also consider some "solid state solutions".

Most of the modern contactors are 3P and 2T type.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top