High Temperature AUPO Thermal Links TCO P5-3A-F 3A 250V Cutoff 135C Ceramic Fuse For Intelligent Gas Water Heater
General
AUPO Thermal links TCO are used to prevent fires caused by abnormal heat generation from circuits and other heat producing electrical products. They are a non-resettable thermal fuse which open electrical contacts when temperatures exceed the specified level.
Operating Principle
When the ambient temperature rises to the functioning temperature, the thermal element melts and the springs move the contact away and open the circuit permanently
Dimension
| Series | Dimension(mm) | ||||
| a | b | c | d | e | |
| P-F | 9.0±0.5 | 38±3 | Φ0.54±0.5 | Φ2.5±0.1 | 3.3 or below |
| P-1A-F | 6.5±0.5 | 38±3 | Φ0.54±0.5 | Φ2.1±0.1 | 2.4 or below |
| P-3A-F | 10.0±0.5 | 38±3 | Φ0.6±0.02 | Φ3.0±0.1 | 3.3 or below |
Technical Data
| Model NO | Rated functioning temp. | Fusing-off temperature | Holding temperature | Maximum temp .limit | Rated current | Rated voltage |
| (Tf) | (Th) | (Tm) | (Ir) | (Ur) | ||
| P0-3A-F | 84℃ | 82±2℃ | 65℃ | 200℃ | 3A | 250V |
| P1-3A-F | 102℃ | 98±2℃ | 80℃ | 200℃ | 3A | 250V |
| P2-3A-F | 115℃ | 112±3℃ | 95℃ | 200℃ | 3A | 250V |
| P3-3A-F | 125℃ | 120±3℃ | 105℃ | 200℃ | 3A | 250V |
| P4-3A-F | 130℃ | 126±2℃ | 107℃ | 200℃ | 3A | 250V |
| P5-3A-F | 135℃ | 131±3℃ | 115℃ | 200℃ | 3A | 250V |
| P9-3A-F | 138℃ | 135±2℃ | 115℃ | 200℃ | 3A | 250V |
| P7-3A-F | 150℃ | 145±3℃ | 128℃ | 200℃ | 3A | 250V |
| P12-3A-F | 145℃ | 140±2℃ | 126℃ | 200℃ | 3A | 250V |
Applications
• Electric home appliances and heating devices
• Coil-winding products and power supplies
• Office equipment and telecommunication devices
• Automobiles & other electronic components
Cautions
• Bends in leads should be at least 3mm from the body of the TCO.
• Extreme caution must be used while soldering, use a heatsink and avoid heating above Tf -24°C.
• The metal portion of the TCO is electrically live and may require insulation.
• Do not use in liquids or poisonous gasses such as sulfuric acid or nitrous oxide.
• Do not connect heater directly to the cutoff.
Determine the Proper Series
• Tp : The highest temperature of the product to which a cutoff is to be attached.
• Th : The safe temperature range for use of the cutoff.
• Ts : 24ºC (Tp-Th) (Apply 35ºC for Ts value when Tp is higher than 170ºC.)
• To : The heating temperature caused by electrical load (Please refer temperature / current correlation curve)
• +a : 1. Self heating of lead wire 2. Structure of ventilation or airtightness 3. Location of connecting terminal 4. Thicknes of insulated covering material 5. Best condition value considering electric voltage changes
Tp + Ts + To +a = Applicable Temperature
