You will find that the WD3556 is listed clearly in the specs, which helps when ordering replacements.
NEW RELIANCE ELECTRIC 600434-6R RELAY6004346R
What stands out about Space Age Electronics is the way the terminals accept standard lugs without any fuss or wiggle.
A nice touch is the subtle Schneider mark, which helps keep the panel looking tidy and consistent.
You will find that the unbranded/generic finish matches other components, making wiring jobs more cohesive.
What stands out about this relay is the with brown switch, even in dim workshop lighting.
Many users say that Phoenix Contact relays operate quietly, which can change in noisy control cabinets.
You might like how the unbranded/general finish avoids flashy marks, letting the wiring do the talking.
You will find that the GROBARPART name is printed neatly, which makes replacements less confusing.
A nice touch is the gentle sound on the ARD4UR model, and you will find that it helps confirm operation during tests.
What stands out about the relay is the Schneider Electric badge, which lends credibility without any extra fluff.