A trap door system for sliding trap doors or guillotine-style traps has a door guide assembly in which a door of a trap slides. The system provides a powered door using a door spring arming assembly having compression springs and spring slides situated on door supports. With the door open, the spring slides compress the compression springs and engage a door spring stop to bias the door toward a closed position. The door is spring loaded so that when a support mechanism with trigger is operated to release a catch assembly, the door rapidly closes. The catch assembly includes a spring to bias the catch arm to position for locking the door once closed. The support mechanism may be situated to operate multiple doors using the system.