The NR Series varistors are voltage‑dependent, non‑linear resistors designed for transient suppression in electrical circuits. They feature high transient current capability, fast response, low leakage, low capacitance, and an epoxy coating that protects against heat, humidity, shock and vibration.
Technical tables list steady‑state voltage, clamping voltage, test current and energy ratings for a wide range of part numbers. The devices are UL recognized and CSA certified, and are supplied by Stetron International with dimensions provided in both inches and millimetres.
| Maximum transient current capability | up to 6500 A |
|---|---|
| Response time | less than 35 ns |
| Leakage current | Low |
| Capacitance | Low |
| Standby current | Low |
| Protective coating | Epoxy coating |
| Safety certifications | UL recognized, CSA certified |
The varistors can handle up to 6500 A of transient current.
They respond in less than 35 nanoseconds.
Yes, they are UL recognized and CSA certified.
An epoxy coating provides protection from heat, humidity, shock and vibration.