STC5300 SUPCO Thermal Cutout – 15 Amp
The SUPCO STC5300 Thermal Cutout is a high-quality safety device designed to provide reliable backup protection for temperature-controlling thermostats and other over-temperature conditions. Engineered for electric furnaces, duct heaters, heat pumps, and industrial equipment, this one-time operation thermal cutoff ensures safe and efficient system performance.
Key Features ✅
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✅ 15 Amp Rating – suitable for continuous operation up to 15A @ 120VAC (10A @ 250VAC)
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✅ One-time operation – opens the circuit if temperature exceeds design limit
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✅ Open Temperature: 306°F / 152°C
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✅ Face Plate Straight Configuration – fits standard mounting applications
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✅ Reliable backup protection – safeguards thermostats and other temperature controls
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✅ Versatile applications – duct heaters, electric furnaces, heat pumps, portable heaters, industrial equipment, office machines
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✅ Durable design – built to handle repeated heating cycles in HVAC systems
Specifications 📊
| Specification | Value |
|---|
| Part Number |
STC5300 |
| Amp Rating |
15A |
| Open Temperature |
306°F / 152°C |
| Mounting Type |
Face Plate Straight |
| Compatible Equipment |
Duct heaters, furnaces, heat pumps, portable heaters, industrial equipment |
| One-Time Operation |
Yes |
| OEM Cross Reference |
T-O-D G4AM0600152C, Diversitec HFL5300, A-1 TC5300 |
Common Symptoms Solved ⚡
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❌ Heater or furnace not shutting off at the correct temperature
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❌ Overheating due to thermostat failure
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❌ Unsafe temperature conditions in duct heaters or industrial systems
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❌ Malfunctioning or tripped equipment due to lack of thermal protection
Frequently Asked Questions (FAQ) ❓
Q: What is the open temperature?
✅ 306°F (152°C).
Q: What current rating does it support?
✅ 15A @ 120VAC (10A @ 250VAC).
Q: What types of equipment can this be used with?
✅ Electric furnaces, duct heaters, heat pumps, portable heaters, industrial equipment, office machines.
Q: Is this a resettable device?
✅ No, it is a one-time operation thermal cutoff.
Q: How is it mounted?
✅ Face plate straight configuration for easy installation.
Shopping Tips 🛒
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✅ Confirm your system’s voltage and amperage requirements before purchase
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✅ Replace any thermal cutoff that has tripped or shows signs of wear
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✅ Ensure proper open temperature matches your original part
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✅ Keep a spare on hand for emergency HVAC or industrial equipment maintenance
