3V three-vessel brewing controller: front panel with key switch, three PID controllers and pump and element switches
Accessory · Bräu Supply

3V Three-Vessel Brewing Controller

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Designed and assembled in Vancouver, BC.

A whole HERMS brewery on one dryer outlet. The 3V runs your hot liquor tank, mash and boil from one wall-mount 240V panel: three temperature controllers with boil-over protection, two element outlets and two pump outlets on a single 30 A circuit. Three RTD probes are in the box. Hand-built in Vancouver, BC.

How a brew day runs on one circuit

  1. Heat strike water: Element Select on HLT. The HLT element heats to strike temperature.
  2. Mash: one pump recirculates the mash through the HERMS coil in the hot HLT, and the Mash controller reads the wort coming back from the mash tun.
  3. Sparge: the second pump moves hot water from the HLT to the mash tun.
  4. Boil: flip Element Select to Boil. The same 30 A circuit now powers the boil kettle element. Set the boil power %, and the timer starts on its own once the kettle reaches temperature.

Only one 5,500 W element runs at a time, by design. Some three-vessel panels need two circuits or a 50 A service to fire two elements at once; the 3V doesn't.

Specifications

Input 240V, 30 A · 6 ft (1.8 m) power cord with NEMA 14-30 plug (4-wire, needs a neutral for the 120V pump outlets)
Elements Two NEMA L6-30R twist-lock outlets · 240V elements up to 5,500 W · one at a time (Element Select)
Element draw About 23 A at 5,500 W
Temperature control Three PID controllers: Hot Liquor, Mash, Boil · built-in timers that start automatically when the set temperature is reached · alarms · manual power % for the boil · boil-over protection · alarm relay
Probes Three 3-wire RTD probes included · 1.5" tri-clamp mount · 50 mm tips · 3 m (10 ft) shielded cords · DIN plugs into the panel
Pump outlets Two 120V outlets, each with its own switch (Pump 1, Pump 2)
Safety Keyed main switch · contactors that physically cut both elements · solid-state relays on a heat sink · fused control circuit
Mounting Powder-coated 1.5 mm steel enclosure, 215 × 150 × 210 mm (8.5 × 5.9 × 8.3 in) · mounting flanges 242 mm (9.5 in) across, for a wall or bench
Built Hand-built and tested in Vancouver, BC
Warranty 1 year on the controller and probes · lifetime parts support

In the box

  • 3V control panel with a 6 ft (1.8 m) power cord and NEMA 14-30 plug
  • Three temperature probes with 3 m (10 ft) shielded cords

You'll also need

  • Two 240V elements up to 5,500 W, plus two L6-30 element cords (our 12 ft pair is an add-on above)
  • Up to two 120V brew pumps
  • A 1.5" tri-clamp port on each vessel for its probe

Electrical requirements

  • A 240V, 30 A NEMA 14-30R receptacle, the same one an electric clothes dryer uses, on a 30 A double-pole breaker.
  • We recommend GFCI protection on every brewing circuit.
  • Have any new 240V circuit installed by a qualified electrician. Our electrical calculator works out the breaker and wire size.
  • Push twist-lock plugs fully in and turn to lock. See element plug safety.

The 3V is the controller that ships with our HERMS Electric Brew System. Compare all of our controllers on the brewing controllers page.

Manual

Installation, probes, Element Select, every setting and troubleshooting: 3V Controller Manual (PDF, 2026). Brewing on the full system: HERMS System Manual (PDF).

$2,570.00Ships from Vancouver, BC · rates calculated at checkout
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Ready to ship · most orders out in under a week
1y
1-year warranty · lifetime parts · every part replaceable
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Talk to a brewer, not a sales rep · email or call — real humans
Add-on

Need element cords?

The 3V's two element outlets take L6-30 twist-lock plugs. Add a pair of 12 ft cords to connect two 240V elements with L6-30 inlets, or bring your own.

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Support

Questions about this part?

Manuals, videos and more answers
Still have questions? Talk to a brewer, not a sales rep. Email or call us during business hours (Pacific time).

One panel.
Three vessels.

The 3V runs a whole HERMS brewery on one 30 A circuit. Hand-built in Vancouver, BC. 1-year warranty and lifetime parts support.

See the HERMS systemCompare controllers