What is the difference between the Type PB and Type S Panelboard Lighting Contactors?
Product and Application Difference
8903 PB and S
Use and mounting
These two types of panelboard contactors mount differently. The standard Type PB has busbar connections whereas the Type S has lugs. The low profile PB contactors are all mecahnically-held , however the smaller footprint Type S can be electrically or mechanically-held.