Product Overview
Airpax 6700 Series 70°C SPST Normally Open Bimetal Temperature Switch
Condition
New condition. Unused through-hole thermal switch with intact straight terminal leads and standard TO-220 mounting tab. Face markings stamped clearly: AIRPAX 07 28 67F070.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
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Product Overview
The Airpax 67F070 is a subminiature bimetal disc thermostat packaged in a standard TO-220 profile. Engineered for thermal management and over-temperature protection, this switch features normally open SPST contacts designed to close when ambient or surface temperature reaches 70°C (158°F). The integrated mounting tab provides direct thermal contact to heat sinks, power transistor brackets, or metal chassis enclosures.
Key Features
- Actuation temperature: Closes on rise at 70°C (158°F)
- Reset temperature: Opens on drop at 50°C (122°F)
- Contact arrangement: SPST, Normally Open (NO)
- Contact electrical rating: 1 A at 120 VAC / 48 VDC
- Package profile: TO-220 tab mount with two through-hole PCB leads
- Lead spacing: Standard 5.08 mm (0.200 inch) terminal pitch
- Mounting hole: 3.6 mm diameter for direct hardware attachment
Applications
- Mounts directly against amplifier or power supply heat sinks to trigger an auxiliary cooling fan when thermal thresholds are met.
- Monitors industrial control cabinets to signal thermal warning alarms or trigger automatic system shutdowns.
- Serves as a reliable hardware interlock in custom 3D printer enclosures, bench supplies, and maker electronic projects requiring autonomous thermal safety.
Frequently Asked Questions
Does this switch open or close when it heats up?
The 67F070 is a normally open (NO) switch. The internal electrical circuit remains disconnected at room temperature and snaps closed when temperature rises to 70°C.
What is the reset temperature for this switch?
The contacts automatically reset and reopen when the thermal mass cools down to 50°C.
Why buy this single Airpax switch here instead of hunting surplus lots?
You receive the exact photographed Airpax component with confirmed legible markings, ready for your immediate repair or circuit build without buying bulk surplus grab bags. Flat-rate shipping is $8, orders over $28 ship free, and packages leave our Idaho warehouse the same or next business day.
Thermal protection is quiet work until the heat spikes, and that is when a clean snap-action bimetal switch earns its place on your heat sink.
Shipping? $8 flat rate, free once your order passes $28 - and it leaves the Idaho warehouse the same or next business day.
