A bakery oven keeps a rhythm no other kitchen equipment matches: preheat before dawn, load cold dough into steam, bake, unload, repeat all day. Deck ovens bake on stored heat, convection ovens bake in moving air, and rack ovens bake a whole trolley at once — three different machines that happen to share a name. This guide works through what each type asks of its thermostat, what steam injection does to sensing, and the limiter protection that unattended preheating demands. Proofing cabinets, which hold dough at low temperatures, are a different control problem and sit outside this guide.
Three oven types, three control duties
A deck oven bakes on stone or steel decks, with bread decks typically working at 220–300°C. Heat soaks into the deck mass and the deck does the baking; the control’s job is to hold each deck at its own setpoint. That is why multi-deck ovens run an independent control per deck — the deck finishing croissants and the deck baking sourdough are not doing the same work, and a shared reading serves neither.
A convection oven circulates air with a fan and bakes lower, typically 160–250°C. The moving air evens out hot spots, so one well-placed bulb gives a representative reading — but doors open constantly for tray rotation, and the control cycles against that rhythm all day. A rack oven is the bakery’s bulk machine: an entire rotating rack of product, elements sized for the full load, and a chamber where current rating starts to matter more than temperature range.
Steam injection changes the sensing problem
Bakery ovens inject steam in the first minutes of the bake — it is what sets a glossy crust. That steam condenses on anything cooler than the chamber air, including the sensing bulb and the first length of capillary. A standard control tolerates it, but daily condensation cycles are hard on sensing parts and can bias a reading while the bulb is wet. On steam-heavy ovens, the TY316 waterproof variant (16A, 50–380°C) is built for wet environments; on any control, keep the bulb out of the direct steam jet and follow the seating and routing rules in our installation guide.
Match the current to the elements
Most bakery chambers sit comfortably inside the AG16-K (50–400°C, 16A / 20A). Heavy decks and rack ovens step up: the AG32-1K switches up to 32A with single-pole compulsory OFF, the ARB 33A reaches 33A (50–500°C), and three-phase ovens take the AG32-3K three-pole control (16A / 32A / 50A, up to 400V). A control switching near its limit hundreds of times a day is the one that fails first; the general selection logic is covered in our oven thermostat guide.
| Model | Rating | Range | Reset |
|---|---|---|---|
| AG16-K | 16A / 20A · 110V / 250V | 50–400°C | Automatic |
| TY316 | 16A · 110V / 250V | 50–380°C | Automatic |
| AG32-1K | 16A / 20A / 32A · 110V / 250V / 380V | 50–450°C | Automatic |
| AG32-3K | 16A / 32A / 50A · 110V / 250V / 400V | 50–350°C, three-pole | Automatic |
Technical data is a catalogue reference. Confirm final ratings, dimensions and approvals for the selected model before ordering.
Limiters for the pre-dawn preheat
Bakeries switch their ovens on before the first baker arrives — an unattended oven at full temperature, every working day. That hour is when a failed control stops being a quality problem and becomes a fire risk, so every bakery oven needs an independent manual-reset limiter above its control: the AG32-1S, its trip point factory-set to your specification, or the multi-pole AG32-2S / AG32-3S (tripping at up to 400°C) on three-phase ovens. Set the trip above the oven’s maximum working temperature and below the damage point of insulation and wiring; our safety limiter guide works through that choice, and our specification guide covers the full ordering checklist.
Certifications
Our thermostats are produced under a TÜV-certified quality system — certificate R50309054 (EN 60730-1 / EN IEC 60730-2-9), verifiable on Certipedia. Confirm the approvals carried by the specific models you select.
FAQ
Which thermostat suits a bakery deck oven?
Most single-phase decks are served by the AG16-K (50–400°C, 16A / 20A) — one control per deck. Decks with heavy elements step up to the AG32-1K (up to 32A) or the ARB 33A (33A).
Does steam injection damage a capillary thermostat?
Condensing steam is hard on unprotected sensing parts over time. The TY316 waterproof variant is built for wet environments, and on any control the bulb should sit out of the direct steam jet, with the capillary routed to shed condensate.
What limiter suits an oven that preheats before staff arrive?
A manual-reset limiter, independent of the control, with its trip point set above the oven’s maximum working temperature — the AG32-1S is factory-set to your specification, and multi-pole AG32-2S / AG32-3S versions cover three-phase ovens.
Many production bakeries also run a combi oven next to their deck and rack ovens. Its control problem is different — a steam generator alongside the convection cavity — and our combi oven thermostat guide works through the cavity, boiler and limiter arrangement those machines need.
High-Current Control Thermostats · Manual Reset Safety Limit Thermostats · Capillary Control Thermostats