OK - I've placed the following order from Auberins.com:
3 1/16 DIN PID Temperature Controller (SSR control) Item # SYL-2352
3 Liquid tight RTD, 2 in, 1/4 NPT Deluxe Cable Item # PT100-L50NPT
2 40A SSR Item # MGR-1D4840
1 Easy Timer with Dual Settings Item # JSL-71
And am
about ready to order the following kit from ebrewsupply.com:
8 - LEDs (2 white 220v, 2 blue 110v, 2 yellow 110v, 1 red 110v, 1 green 220v)
1 - Buzzer
1 - 15a 1-Pole DIN Rail Breaker
2 - 25a 2-Pole DIN Rail Breakers
1 - Emergency Stop locking push button with NC Contact
1 - Extra No contact for E-Stop
6 - 2-Way Switches with 1 NO Contact
1 - 3-Way Switch with 2 NO Contacts
1 - Key toggle Switch for panel on/off
4 - 40a Contactors w/ 110v Coils (1 ea for elements, 2 for control panel main power)
2 - 40a Solid State Relays for PID control of elements, includes heatsink
1 meter of DIN rail, cut in 1/3s
25 - Terminal Blocks for wire from 6-24 awg
8 - Terminal block anchoring ends
4 - Terminal block end covers
4 - Terminal block seperators
3 - Terminal block connecting bridge pieces
1 - Wiring diagram with our recommended design
1 - 16x16x8 encousure
2 - L5-15 twistlock outlets
2 - L6-30 twistlock outlets
1 - large heatsink (drilled & tapped)
So, with all of these parts, I'm thinking about the following design
(P-J, would you be willing to work some of your wire diagram magic on this?)...
5500W element in HLT and in BK (3 way switch to choose which pot to put heat to)
2 40A contactors for main panel power supply (1 on each hot leg)
2 40A contactors for elements (1 for each element)
4 40A SSRs (1 for each leg of each element)
3 PIDs (SYL-2352s; MLT will be for temp monitoring only)
1 timer (JSL-71)
Haven't sourced the parts for this one last thing, but I really like the idea of Kal's safe start interlock as well...
Lastly, I will build a 6#/4 power wire for the control panel main power line (50A service with spa pack GFCI already run).