170°C Thermal Fuse, 10 A, 250 V 🔥🛡️

The 170°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the circuit when an abnormal temperature rise occurs. Rated at 10 A and 250 V, it provides dependable thermal protection for power supplies, appliances, transformers, chargers, motors, lighting systems and industrial equipment, reducing the risk of damage or fire.

Key Specifications 📌

• Cut-off temperature (Tf): 170°C
• Rated current: 10 A
• Rated voltage: 250 V AC
• Type: Non-resettable, one-time thermal cutoff
• Operation: Permanently opens when temperature exceeds Tf

How It Works 🔬

A heat-sensitive element melts at the specified 170°C, releasing a spring-loaded contact that opens the circuit. The device responds to temperature rather than current alone, making it effective against overheating caused by blocked ventilation, faulty loads or abnormal operating conditions. Once tripped, the fuse must be replaced.

Features and Benefits ✅

• Accurate 170°C trip temperature for consistent protection
• 10 A / 250 V rating suitable for many mains and low-voltage applications
• Compact, sealed construction for in-line installation
• Cost-effective safety component for consumer and industrial designs
• Complements conventional fuses and circuit breakers for enhanced safety

Applications 🧩

• Household appliances (kettles, coffee machines, irons, toasters)
• Power supplies, chargers and transformers
• Heating elements, resistive loads and lighting systems
• Motors, pumps and industrial machinery
• Automotive and control equipment requiring over-temperature protection

Installation & Safety Notes ⚠️

• Install the thermal fuse in series with the load or power input.
• Ensure proper thermal coupling to the part or surface being protected.
• Do not exceed the specified 10 A and 250 V ratings.
• This is a single-use device — replace after trip; it does not reset.
• Avoid exposing the fuse body to soldering heat above its rating; use heat sinks and short dwell times.
• Do not confuse with resettable thermostats — this is a permanent cutoff.

Summary 🌟

The 170°C, 10 A, 250 V Thermal Fuse is a reliable, compact and economical safety solution for preventing overheating in electronic circuits, appliances and industrial systems. It delivers essential protection against thermal damage and fire risk, helping produce safer and more durable equipment.