Digikey.com
Description                           Digikey PN
IRL510PBF N-Ch Mosfet                 IRL510PBF-ND
.1uF Capacitor 50V                    399-4264-ND
.01uF Capacitor 100V                  399-4147-ND
.001uF Capacitor 100V                 399-4144-ND
1k Resistor 1/4W                      1.0KQBK-ND
10k Resistor 1/4W                     10KQBK-ND
1Meg Resistor 1/4W                    1.0MQBK-ND
BAT41 Schottky Diode                  497-2493-1-ND
12A DPDT Relay 12v coil               PB1159-ND
12V 1A Voltage Reg (14.5-35V in)      LM7812CTFS-ND
SL22 5R012 12A Inrush Current Lim.    570-1053-ND

Optional
Terminal Blocks .2" Spacing           ED2609-ND
  (These are cheap and fit into .1" perfboard spacing)
Alligator Clip for Touch Plate Gnd    314-1034-ND
  
MPJA.com
Description                           MPJA PN
25A @ 480VAC Solid State Relay        17155 RL
E-stop Switch                         17054 SW