The TPEL TH121 HOL thermal fuse is a non-resettable overcurrent and overtemperature protection device. When the ambient temperature at the fuse reaches 121°C, the element opens permanently, disconnecting the circuit to prevent damage or fire. It is intended for installation inside transformers, electric fans, low-power motors, chargers, electronic ballasts, capacitors, and various heating systems.

With a rated voltage of 250V AC and a rated current of 10A, it covers the majority of low-power household and industrial equipment. The holding temperature of 94°C ensures the fuse remains closed during normal operating warm-up cycles.

Key Features

• One-shot thermal cutoff — opens permanently at the rated functioning temperature
• Functioning temperature (TF): 121°C
• Fusing-off tolerance: 119 +2/-3°C
• Holding temperature (TC): 94°C
• Rated 250V AC / 10A
• Maximum temperature limit: 150°C

Product Benefits

• Permanently opens the circuit at 121°C, stopping heat-related damage before it escalates
• 94°C holding temperature prevents nuisance trips during normal equipment warm-up
• Fits a wide range of appliances — transformers, fans, motors, chargers, ballasts, and heating systems
• 250V/10A rating covers the majority of single-phase low-power equipment

Technical Specifications

• Model: TPEL TH121 HOL
• Functioning Temperature (TF): 121°C
• Fusing-off Temperature: 119 +2/-3°C
• Holding Temperature (TC): 94°C
• Maximum Temperature Limit: 150°C
• Rated Voltage: 250V AC
• Rated Current: 10A
• Pack Quantity: 4 pcs

Why You'll Love It

• Pack of 4 provides spares for servicing multiple units or keeping stock on hand
• Non-resettable design guarantees the fault is flagged and must be addressed before the appliance is returned to service
• Covers the most common domestic and light industrial voltages and currents
• Package includes 4× TPEL Thermal Fuse 250V 10A 121°C TH121 HOL