Thermal fuse

MICROTEMP Features:

Globally certifi ed temperatures and electrical loads

One-shot operation cuts off electrical power

Current interruption capacity up to 25 amps @ 250VAC

Low resistance

Compact size

RoHS compliant

Operating Principle

The active trigger mechanism of the thermal fuse is an exclusively formulated, electrically nonconductive pellet. Under normal operating temperatures, the solid pellet holds spring loaded contacts closed. When a predetermined temperature is reached, the pellet melts, allowing the compression spring to relax. The trip spring then slides the contact away from the lead and the circuit is opened.

After the thermal fuse opens a circuit, the fuse needs to be replaced. This replacement procedure must include correction of the fault condition before the product is operated again.

G4

G5

Z6

G6

G7

G8

S9

Typical Resistive Rating at 250VAC

10A

20A

16A

16A

5A

25A

15A

Higher Tm than G6

More Temperature Ratings than Z6

G4 Microtemp Thermal Fuse

G5 Microtemp Thermal Fuse

G6 Microtemp Thermal Fuse

G7 Microtemp Thermal Fuse

G8 Microtemp Thermal Fuse

Z6 Microtemp Thermal Fuse

Designed with a up to 380°C maximum temperature, the Z6 series MICROTEMP® thermal fuse can be utilized in applications where a higher maximum-overshoot temperature rating is needed, yet it is rated for operating currents up to 16 amps at 250VAC. It is the same physical size as the G4, G5 and G8 series thermal fuses.