G4A01172C THERMODISC, G4A01172C Datasheet - Page 22

• Manufacturer Part Number: G4A01172C
• Description: FUSE, THERMAL, 10A, 172 C
• Manufacturer: THERMODISC
• Series: MICROTEMPr

Specifications of G4A01172C

• Voltage Rating Vac: 250V
• Fuse Current: 10A
• Terminal Type: Wire Leads
• Actuating Temperature Max: 172°C
• Approval Bodies: BEAB, CSA, FEMKO, UL, VDE,
• Body Diameter: 4mm
• Breakdown Voltage: RoHS Compliant
• Breakdown Voltage Vbr: 1200V
• Rohs Compliant: Yes

CAUTION . . . The thermal cutoff may fail to open the electrical circuit under certain conditions.
Distortion of the case, breaking or cracking the seal, exposing the epoxy seal to cleaning solvents,
compression of the leads and current surges that exceed the operating specifications of the thermal
cutoff may cause the thermal cutoff not to open. In addition, pellet shrinkage due to thermal
aging under some circumstances may also result in failure to open. Finally, a very low rate of
temperature rise may produce conditions that may also result in failure to open. Care must be
taken to avoid any mishandling or misapplication of the thermal cutoff.
CAUTION . . . Although TCOs are highly reliable devices, a TCO may fail to open in operation for
one or more of the reasons set forth above. These conditions must be taken into account by the
product design engineer in determining the level of reliability needed for the application. If failure
of the TCO to open could result in personal injury or property damage, the product design engineer
may want to consider using one or more redundant TCOs of different ratings to achieve the
desired level of reliability. A number of consumer product design engineers have incorporated
redundant TCOs of different ratings in their designs for this reason.
Definition of Terms
Maximum Open Temperature or Rated Functioning Temperature (T
The maximum temperature at which the thermal cutoff changes its state of conductivity to open
circuit with detection current as the only load. The rated functioning temperature is measured
during a temperature rise of approximately 0.5°C per minute.
Holding Temperature (T
The maximum temperature at which, when applying the rated current to the thermal cutoff, the
state of conductivity will not change during a period of one week.
Maximum Overshoot Temperature or Maximum Temperature Limit (T
The maximum temperature at which the thermal cutoff, having changed its state of conductivity,
can be maintained for a specified period of time, during which its mechanical and electrical
properties will not be impaired.
Rated Voltage:
The maximum voltage that can be applied to the circuit in which the thermal cutoff is used.
Rated Current:
The maximum current that the thermal cutoff is rated to interrupt at the rated voltage.
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