Kingtronics sell 2-Electrode arresters and 3-Electrode arresters.
Including 2 Surge Arresters 8*6mm, 2 Surge Arresters SMD4532,2 Surge Arresters SMD5042,3 Surge Arresters 8*10mm,3 Surge Arresters SMD5076
http://www.kingtronics.com/surge-arresters/
Key Characteristics
● DC Breakdown Voltage (@100V/S) : 75~1000V
● Tolerance of DCBV : ±20%
● Impulse discharge current (8/20 μs): max. 10 kA
● Alternating discharge current (@50Hz) (A): max. 10 A
● Insulation resistance min.: 1 GΩ
● Electrode Capacitance (@1MHz) (pF) min: ≤1pF
Features
● Extremely small size
● Extremely fast response time
● Eexcllent SMD handing
● Stable performance over life
● Very low capacitance
● High insulation resistance
● RoHS-compatible
Applications
●Telephone/fax/modem protection
●Signal line protection
●Protective circuits
●3-point protection
●5- point protection
●Cable TV/coaxial cable protection
●AC line protection