30W led floodlight trips MCB

[jdp80]

Purchased a 30W PIR LED floodlight from Screwfix this weekend, simple cable swap but it trips the MCB every time it comes on.
The lighting circuit is on a B6 breaker.

No continuity between any of the wires.

The lamp works fine on a different power supply, I haven't tested a higher current MCB circuit yet.

Is it likely to be the MCB or is something else going on?

 

[JohnD]

it's a hundred times more likely you have connected it wrong.

check it yourself, then post a photo of all the connections.