TF 240 Celsius Degree Cutoff Thermal Fuse AC 250V 10A

The TF Thermal Fuse RY-240° C 10A 250V is a one-time thermal cutoff device designed to protect electrical appliances from overheating. When the surrounding temperature reaches the rated cut-off point of 240°C, the internal fusible element melts and permanently breaks the circuit to prevent potential fire hazards. This thermal fuse is widely used in heaters, hairdryers, transformers, power supplies, and other high-temperature environments.

Key Features:

• High Cut-Off Temperature: Operates at a fixed cut-off temperature of 240°C for overheat protection.
• One-Time Operation: Designed for permanent disconnection after activation.
• High Current Capacity: Supports up to 10A at 250V AC.
• Compact Axial Design: Easy to mount in compact or confined spaces.
• Reliable and Safe: UL, VDE, and other certifications for safety compliance.

Technical Specifications:

• Rated Functioning Temperature: 240°C ± 5°C
• Rated Current: 10A
• Rated Voltage: 250V AC
• Hold Temperature: 200°C
• Maximum Temperature: 260°C
• Body Material: Metal capsule
• Operating Principle: Thermal cutoff via fusible alloy inside

Mechanical Characteristics:

• Fuse Type: Axial lead thermal fuse
• Lead Type: Tin-plated copper leads
• Body Shape: Cylindrical
• Mounting: Through-hole

Dimensions:

• Body Length: 8mm
• Body Diameter: 4mm
• Lead Length: 30mm each side (approx.)
• Total Length: 68mm (including leads)

Schematic Diagram and Connection:

• Series Connection: Connect the thermal fuse in series with the load or power line.
• Polarity: No polarity – can be installed in either direction.
• Installation Tip: Do not crimp or apply excessive heat when soldering; use heat sinks or clamps.

Datasheet:

• Download TF Thermal Fuse RY-240°C Datasheet (PDF)

Applications:

• Electric Heaters: Ensures cut-off during overheating.
• Hair Dryers and Curlers: Built-in safety fuse for thermal protection.
• Transformers: Disconnects in case of core or winding overheating.
• Power Supplies and Chargers: Safety fuse for thermal shutdown.
• Battery Packs: Prevents fire hazards from thermal runaway.

Equivalent:

• SEFUSE SF240E: Similar cut-off temperature and current rating with axial leads
• MICROTEMP G4A00 240°C: Global standard thermal fuse for 240°C cut-off
• AUPO A2400: Reliable replacement with 10A 250V specification
• THERMODISC G5A240E: Equivalent thermal protection fuse with similar response time

Package Includes:

• 1 x TF Thermal Fuse RY-240° C 10A 250V