A nice touch is the SEL branding, a small sign that the part is from a familiar maker.
Schweitzer SEL-551C Overcurrent and Reclosing Relay, Type 1, PD 2
A nice touch is the smooth spring action inside this unbranded relay, which feels reliable without being too stiff.
A nice touch is the small latch on the relay base w/ relay for secure retention.
What stands out about this relay is the SEL name, which feels like a mark of dependable quality.
A nice touch is the crisp SEL logo, a detail that helps when you are sorting through different relays.