That isn't the proper female plug for a 240V PDU. Most 240V PDUs have a L6-30P.

If you goto Lowes or Home Depot you can buy the parts needed to make an adapter.

Certainly don't just buy a "adapter" and use a standard surge protector with it, because the plug fits.  Standard surge protectors are rated at 15A, in the USA at least.  ... You're talking multiple rigs anyway, right?  So you're going to want a PDU.  Spend the money on it, before you blow everything up.

And as we've seen in this very thread ... Electricians don't know everything.

i think you should familiarize with your amperage of each wall connectors. Mine is older condo and it appears all the sets of wall distributed around 2bedroom is controlled by 2 major circuit breaker. One time I tripped the circuit breaker and half of my miner lost power. Using that chance I decided to tinker with the patch panel to found out which switch will enable/disable which electrical items. There are separate breakers for lighting, walls sockets, dryer, kitchnen washer and dryer and I think I identified most of it. And each of them has marking of max amperage.

I'm not the OP.  Just thought you'd know a little more since you're an electrician.  I personally run rigs off of two 30A 240V circuits.  I have a pdu on each of them which provides enough outlets for multiple rigs.  You'll find pdu's in any data center.  You can get metered ones that display the amp draw on each bank and you can even get switched ones that will allow you to turn any of the outlets off and on remotely.  The big thing is that it provides evenly distributed power over all outlets and provides overload protection.

So my question to you since you're an electrician ... The adapter that he linked to above is not going to provide any overload protection, right?  Is there a possibility that he is going to harm his equipment by just using an adapter like that?  I personally would never use something like that for this application.

Yep i've done it. I think i somewhat documented it somewhere but i cba to dig it out. Just make sure the plug is unpullable, it doesn't lock, normally the oven is in the way and that make it secure. You don't want see 35amps@240v arcing.