What stands out about this Square D relay is its familiar look, which blends well with older panels.
Square D 8501 CO-1 Series B Control Rlay, 120V 60Hz Coil – USED
Many folks that this relay has the Square D name, a brand they have used for years.
You will find that the Square D name sits right on the housing, which feels solid and familiar.
You will find that the Square D brand is right there on the relay, a detail that matters.