Precision Bimetal Thermostat for Intelligent Cabinet Climate
- Since 2003 • Bimetal thermostat specialist
The most cost-effective, DIN-rail mounted temperature control for cooling fans, AC units, and enclosure heaters — designed and manufactured by Linkwell, your one-stop cabinet component partner.
Trusted by Siemens, Schneider, ABB — OEM/ODM orders welcome
What is a Bimetal Thermostat?
It is the most common type of enclosure thermostat （adjustable bimetal thermostat）. Unlike electronic versions, our bimetal thermostats use a pure mechanical snap-action disc. This makes them the lowest-cost, most rugged, and long-lasting solution to control cooling fans or heaters in your electrical cabinet. They are the industry standard for panel builders who value simplicity and reliability.
Bimetal Thermostat Working Principle
How a simple bimetal disc controls your Linkwell fan, AC unit or heater — no power needed, pure physics.
Heat triggers deflection
Two bonded metals (different expansion rates) bend when cabinet temperature rises above setpoint. The "active" layer expands more, forcing the strip to curve.
Snap‑action contact
At precise setpoint (e.g. +30°C) the disc suddenly snaps — not slowly bends. This rapid transfer eliminates arcing and ensures >100,000 cycles life.
Reset & dual control
When temperature drops (hysteresis ~3K), bimetal snaps back. NC contact closes to run enclosure heater. One SPDT thermostat manages both cooling and heating.
Your complete cabinet climate control ecosystem
Our bimetal thermostats are the brain of your enclosure — they command Linkwell cooling fans, air conditioners, and heaters to maintain optimal conditions.
Fan & Filters
5 sizes, IP54–IP68, UL certified, with built-in thermostat compatibility
Cabinet AC
500W–5000W, R134a, RS485, side/embedded mount – thermostat controlled
Enclosure Heater
Anti-condensation, 50W–500W, DIN rail, directly wired to bimetal output
Hygrostat
Electronic & bimetal combined for humidity control
Compliance & International Standards
The dedicated component for protective earth (PE) and neutral (N) connections — the foundation of panel safety.
Why Linkwell Bimetal Thermostat is the low-cost workhorse for panel builders
Designed specifically for industrial enclosures requiring reliable climate control. Our bimetal thermostats are DIN rail mounted, directly actuate cooling fans (up to 10A), AC units or heaters based on accurate snap-action principle.
- Snap-action bimetal disc: No auxiliary power needed. When temperature crosses setpoint (range 0°C to 60°C or -10°C to 80°C), the disc toggles, switching your fan or heater. Fail-safe, long life (>100,000 cycles). Perfect for filter fans, cabinet heaters, and signal lights.
- Mounting: 35mm DIN rail (EN 60715) – tool-less clip
- Contact rating: 10A (250V AC) / 15A available, SPDT or snap switch
- Setpoint range: 0–60°C (standard), wide range -20°C to +80°C on request
- Certifications: UL, CUL, CE, RoHS – compliant with industrial automation
- Connection: Terminal blocks (AWG 12–20) – clear marking
As a cabinet component manufacturer, Linkwell designs thermostats that match perfectly with our cooling fans (axial, filter fans) and AC units. We offer custom marking, setpoint adjustment knobs, and even hybrid electronic/bimetal for special projects.
- OEM partner: We customize bimetals for solar, wind, EV charging – exact match to your heater/fan specs. 20+ years export experience.
Field-proven in demanding industries
Our bimetal thermostats operate in wind turbines, photovoltaic stations, and automated factories — the same harsh environments you face.
Wind Power
- -40°C to 60°C ambient
- Control anti-condensation heaters
- Vibration-resistant bimetal
- IP65 cabinet integration
Photovoltaic
- Solar inverter cooling
- DC/AC cabinet ventilation
- UV-resistant housing
- Matches Linkwell DC fans
Automation
- CNC cabinet climate
- robotics controller cooling
- DIN rail heater control
- RS485 ready for remote
Why B2B partners choose Linkwell
Our bimetal thermostats are the brain of your enclosure — they command Linkwell cooling fans, air conditioners, and heaters to maintain optimal conditions.
UL & global certs
Every bimetal thermostat carries UL, CE, and RoHS. We support your export.
One-stop sourcing
Thermostats + fans + AC + heaters + terminal blocks – reduce vendor count.
Custom-engineered
Special temperature ranges, wire length, adjuster shaft, custom labeling.
Direct factory
20 years export, on-time delivery, 24/7 after-sales (USA, Australia, Korea, Tanzania offices).
Certificate
Our Bimetal Thermostat meet CE, UL, and ISO standards for global compliance.
FAQ of Bimetal Thermostat
Can your bimetal directly switch a 0.5kW cabinet air conditioner?
Do you offer thermostats for both cooling and heating in same enclosure?
What about enclosure with high humidity / washdown?
I need thermostats with preset 30°C (no knob) – OEM volume?
Test Bimetal Thermostat
Cold Test (Continuity): Use a multimeter on the continuity/ohms setting. At room temperature (below setpoint), the NC (Normally Closed) contact should show continuity (0 ohms), and the NO (Normally Open) contact should show infinite resistance (OL).
Heat Test (Activation): Apply heat to the thermostat (using a hairdryer). When the temperature passes the setpoint, you should hear a faint “click.” At that moment, the continuity should swap: the NC contact now opens (OL), and the NO contact closes (0 ohms).
Cool Down Test (Reset): Remove the heat and let it cool. When it drops below the setpoint (minus the hysteresis), it will click again and return to its original state.
