Professional High-Power 3-Vessel HERMS Control. Built to Last.

Take complete control of your larger electric brewery with the Ruby Control H50-4 50A HERMS Brewing Controller. Designed for 3-vessel HERMS brewing systems up to 1 BBL, the H50-4 provides the additional heating capacity needed for larger vessels while delivering dedicated temperature control for your Hot Liquor Tank and Mash Tun, along with precise manual power control for your Boil Kettle.

The H50-4 supports four electric heating elements—two for the HLT and two for the Boil Kettle. Its power-management system allows any two heating elements to operate simultaneously, giving you the flexibility to run two elements in a single vessel for maximum heating power or operate one HLT element and one Boil element at the same time.

Whether you're rapidly heating strike water, maintaining precise mash temperatures through your HERMS coil, heating sparge water, or bringing a 1 BBL kettle to a boil, the H50-4 provides the heating capacity and flexible power management needed for larger electric brewing systems.

Unlike many imported controllers, every Ruby Control panel is designed, assembled, wired, and tested in Colorado using industrial-grade components—not consumer electronics. Every panel is professionally wired, function tested under load, and backed by the lifetime customer support Ruby Street Brewing is known for.

Why Choose Ruby Street?

• Designed, built, and tested in Colorado

• Industrial-grade components throughout

• No proprietary parts—serviceable with readily available industrial components

• Every controller is professionally wired, inspected, and function tested under load before shipment

• Real lifetime technical support from experienced brewers who know the equipment

Complete HERMS Brewing Control

• Dedicated PID temperature control for the Hot Liquor Tank (HLT)

• Dedicated temperature monitoring for the Mash Tun

• Two operating modes for heating control:

  • Automatic PID temperature control for precise HLT and HERMS operation

  • Manual % power output for precise Boil Kettle control

• Four independently switched heating-element outputs:

  • Two HLT element outputs

  • Two Boil element outputs

• Any two heating elements can operate simultaneously

• Operate both elements in the HLT for maximum HLT heating capacity

• Operate both elements in the Boil Kettle for maximum boil heating capacity

• Operate one HLT element and one Boil element simultaneously for greater flexibility during the brew day

• Power-management system prevents more than two heating elements from operating simultaneously

• Compatible with PT100 RTD temperature sensors (sold separately)

• Independent digital brew timer with audible alarm

• Programmable temperature alarms

• LED heating-element status indicators

• Independent pump controls for typical HERMS brewery operation

Professional Construction

• Heavy-duty stainless steel enclosure

• Industrial laser-engraved faceplate—no labels or decals to peel or fade

• Professionally wired and inspected

• High-temperature, oil-resistant wiring

• Wire ferrules used on stranded wire terminations for maximum reliability

• DIN rail mounted industrial components

• Industrial terminal blocks

• Modular internal layout for simplified servicing and future maintenance

• Replaceable industrial contactors

• Designed for years of dependable service

Electrical Specifications

• 208–240 VAC, 50 Amp operation

• Designed for 3-vessel electric HERMS brewing systems up to 1 BBL

• Four heating-element outputs:

  • Two HLT

  • Two Boil

• Maximum of two heating elements operating simultaneously

• Flexible element selection allows:

  • Two HLT elements

  • Two Boil elements

  • One HLT + one Boil element

• NEMA L6-30R heating-element receptacles

• Supports 240V heating elements up to 5,500 Watts each

• Up to 11,000 watts of simultaneous heating capacity at 240V

• 120V pump receptacles

• Illuminated rotary pump ON/OFF controls

• LED heating-element active indicators

• 6-foot power cord with NEMA 14-50 plug

• Neutral required for onboard 120V circuits

Safety Features

Safety was designed into every Ruby Control controller.

• Industrial contactors disconnect both hot legs from heating elements when de-energized

• Electrical power-management interlocking prevents more than two heating elements from operating simultaneously

• Internal circuit breaker protection on branch circuits

• Replaceable industrial contactors

• Designed for operation on a properly protected GFCI circuit

Ideal Applications

• 3-Vessel HERMS Brewing Systems up to 1 BBL

• Home, pilot, and small-scale brewery systems

• Systems requiring dual heating elements in the HLT and Boil Kettle

• Electric Hot Liquor Tanks (HLT)

• HERMS Mash Temperature Control

• Electric Boil Kettles

• Systems requiring up to two active heating elements at a time

• Brewers who want the flexibility to divide available heating power between the HLT and Boil Kettle

Included

• Ruby Control H50-4 50A HERMS Brewing Controller

• 6-foot power cord with NEMA 14-50 plug

• 6-foot pump extension cords with standard NEMA 5-15 cord ends

Temperature sensors, heating elements and element connection cables sold separately.

Warranty & Support

Every Ruby Control controller is backed by a 1-Year Limited Warranty and our unmatched Lifetime Technical Support. Whether you have a question during your first brew or years down the road, our team is here to help.

Availability

Built to Order

Each controller is individually assembled, wired, inspected, and tested before shipment.

Please contact us for current lead times.