Safety Thermal Fuse BLOW 7078# for Microwave Ignition 0.7 A / 5 kV

BLOW 7078# is a safety thermal fuse designed for microwave ignition systems, rated at 0.7 A and 5 kV. It is intended to interrupt current in the high-voltage/ignition circuit when temperature or fault conditions exceed safe limits, reducing the risk of further damage to the magnetron and surrounding components. The component is intended for service, repair or maintenance of microwave ovens and other equipment that use similar high-voltage ignition arrangements, provided the electrical and thermal characteristics match the original specifications.

Advantages

The thermal fuse provides a reliable temperature-activated cutoff with a defined current and voltage rating suitable for microwave ignition circuits. Its compact form factor and clearly specified operating limits simplify replacement during maintenance. As a dedicated safety component, it helps restore protective functionality in high-voltage parts of the appliance without requiring changes to the original circuit design.

Suitable for

• Repairing or replacing the overtemperature protection in microwave oven ignition/high-voltage circuits
• Maintenance of appliances that use high-voltage ignition systems with matching electrical/thermal ratings
• Service work on magnetron protection and associated high-voltage components

Key specifications

• Rated current: 0.7 A
• Withstand voltage: 5 kV (suitable for high-voltage ignition environments)
• Type: temperature-activated safety fuse for microwave ignition circuits
• Function: interrupts high-voltage/ignition circuit under overtemperature or fault conditions
• Form factor: compact component suitable for installation in confined high-voltage compartments

How to use

Identify the original thermal fuse location in the microwave high-voltage/ignition circuit and ensure the appliance is disconnected from mains supply and discharged according to safety procedures before starting work. Remove the faulty fuse and install the replacement matching the specified current and voltage ratings. Ensure secure electrical and mechanical connections and verify insulation and clearance in the high-voltage compartment. After installation, perform functional and safety checks, including leakage and continuity tests appropriate for microwave high-voltage systems.

Usage recommendations

Only use this thermal fuse as a direct replacement where the electrical and thermal ratings match the original component. Work on microwave high-voltage systems should be carried out by qualified technicians following safety regulations; always discharge capacitors and observe high-voltage safety procedures before handling components.