Yes, you can run several contacts in series. The number of contacts depends on the resistance that the panel will "put up with". In most cases you can have up to 200 ohms ~ 300 ohms (with wire and contacts) before the panel will give you a fault. This is in addition to the amount provided by the manufactures EOLR (End of Line Resistor).
Watch this video to learn how to properly wire these contacts in a series.