A nice touch is the RIB brand, and what stands out about it is the clarity of the lettering.
One SIEMENS 3RV1901-1D CONTACT BLOCK
You will see model DEK-OE- 12DC/ 48DC/100.
The product page shows Features as N/A, so you can judge the relay by its core performance.
What stands out about the MAS50MV is the compact size that still leaves room for wiring.
You will find that the JDMSPEED relay sits neatly in the slot and connects without fuss.