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PTC THERMISTOR must protect the telephone line circuit against overcurren, which maybe caused by:
1.Surges due to lighting strikes on or near to the line plant
2.Short-term induction of alternating voltage from adjacent power line or
railway systems, usually caused when these lines or systmes develop faults
3.Direct contact between telephone lines and power lines.
**APPROVALS**
ISO 9001:2000
CQC 02000002714
UL ULE243011
**Free Samples Available**
Ampron manufactures a series of PTC THERMISTOR to meet your specific specification.
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