PTP550 on a 48V Passive POE Switch

Hi all,

Can anyone confirm if a PTP550 Integrated will run on a 48V Passive POE Switch?

I am looking to use two PTP550s with a Netonix WS-8-150-DC which can do 24V or 48V passive POE out on all ports.

I have been told it can by the supplier, but thought it would be best to check here. I know the spec sheet says it is 802.3at and requires 56VDC to operate.