Here is a detailed breakdown of the Eaton E30-S2NT Heavy Duty Selector Switch.
Breakdown of the Part Number: E30-S2NT
The part number is a code that describes its features:
E30: The "Heavy Duty" product series.
S: Indicates that the operator is a Selector Switch (as opposed to "L" for illuminated pushbutton, "B" for non-illuminated pushbutton, etc.).
2: Specifies the Contact Action. "2" means it is a Maintained (or latching) device. The switch stays in the position you turn it to until you manually turn it back.
N: Denotes the Operator Color. "N" is for Red.
T: Specifies the Lens Type/Shape. "T" stands for a Translucent, Flat Lens. This is important because this operator is also illuminated.
Therefore, an E30-S2NT is a:
Heavy Duty, Illuminated, Two-Position Maintained Selector Switch with a Red, Flat Lens.