A PT1000 isn't a thermistor, it's an RTD with a linear positive temperature coefficient.  You won't need to change the heater cartridge, the stock Creality heater is 40W and will happily achieve temperatures up to 320C.  I have a PT1000 and a Slice Engineering Copperhead heatbreak in my hotend and it works fine, but of course it has a different heater block with a 3mm through-hole to accomodate the PT1000.

PT1000 is a thermistor cartridge : it means that it is a sensor (not a heater). On your draw, the cartridge you point with PT1000 name is the heater cartridge (not the sensor). The thermistor on a Creality printer is smaller than a PT1000.
To upgrade your printer to heat up to 300C, you need to change the whole hotend block with the thermistor and the heater cartridge.
Phaetus Dragonfly BMS is a good option for that goal. You also need to buy a more powerful heater cartridge and a PT1000 thermistor.

Just the block you linked, yes, the one you have now is aluminum, but more importantly the one you linked has the proper hole and grub screw for a pt1000.

No new heater is required, it will take slightly longer to heat up though.

Yes, just be gentle removing the old thermistor wire and routing the new one to the mainboard.

Ok!!! So, the PT1000 is a thermistor that is an upgrade from the bead thermistor BUT, in order to use the PT1000 on my micro swiss, I need to buy that new heat break from micro swiss [https://store.micro-swiss.com/](https://store.micro-swiss.com/products/micro-swiss-high-temperature-mk8-heater-block-upgrade?_pos=1&_sid=2430db47c&_ss=r) to be exchanged with the stock full metal hot end from micro swiss. I was getting confused because the PT1000 looks like a cartridge heater. 

New question, do I need a new heater cartridge after I add the micro swiss MK8 style heat break and the new PT1000? 

Everything is just drop-in too (regarding the hardware. I know there will be turning needed for firmware)?

That's not a PT1000 in the picture, that's the heater cartridge, the bead thermistor is correct.

If you want to upgrade to a pt1000 you will need a new heater block to accept it, which Microswiss sells and is plated copper, and a firmware upgrade which you'll have to compile yourself.

The wiring for the pt1000 is a drop in replacement.

Ok perfect! Thank you. This was very helpful

A PT1000 is a replacement for the original thermistor.  It's not actually a thermistor, but a platinum temperature sensor, and you need different firmware for it.  What your arrow labelled "PT1000" is pointing to is the heater cartridge.  You won't need to change that.  However, you will need a replacement heater block because a PT1000 won't fit where the glass bead did.

A PT1000 does look a bit like a heater cartridge, but is smaller: a printer heater cartridge is 6mm diameter and 20mm or 22mm long, while the type of PT1000 used on printers is 3mm diameter and 15mm long.

I am looking to print polycarbonate (PC) for my college project. I have Ender 3 pro v2 with...

* Micro Swiss full metal hotend 
* Creality 427 motherboard
* Glass bed
* Stock nozzle thermistor
* Stock hot-end thermistor/heater

As stated, I am looking to upgrade to a PT1000 thermistor cartridge from Slice Engineering to reach 300+ temps but I've heard that I need to upgrade the stock glass bead thermistor as seen in the picture attached below. Do I need a new bead thermistor and what should I get? I don't even know what it is called, just calling it a bead thermistor.

I might also have another question regarding the wiring and where all the wires go. That is a later problem.

&amp;#x200B;

[The picture is from a video, not actually the real PT1000 but it is the real micro swiss. Just used it as an example picture.](https://preview.redd.it/5w7asm0fmlga1.png?width=1082&amp;format=png&amp;auto=webp&amp;v=enabled&amp;s=c7870b99850eb12b28a6b5385c72e97b2bd26960)

Looking to install Slice Engineering's PT1000 onto ender 3 pro v2! Confused about thermistors needed.