Three Phase Signal Isolator
Standard Signal Isolator Circuit | High-Frequency Interference Suppression
Our Standard Signal Isolator Circuit delivers excellent performance in suppressing high-frequency interference within the 1MHz–30MHz range. Designed for three-phase systems, it is widely used in switching power supplies, UPS systems, power distribution cabinets, and other power electronic equipment operating in complex electromagnetic environments.
By effectively reducing high-frequency signal interference to peripheral devices and power grids, this isolator ensures stable, safe, and reliable operation, helping minimize equipment failure rates. Ideal for industrial automation, smart building systems, and power electronics applications, it provides enhanced system protection and long-term operational reliability.
Product Advantage
- Suppresses high-frequency interference in the 1MHz–30MHz range
- Compatible with three-phase systems: UPS, switching power supplies, distribution cabinets
- Reduces equipment failure and interference to peripheral devices
- Ensures stable, safe, and reliable operation
- Ideal for industrial automation and smart power systems
Product Parameters
| Rated Voltage | 380/440VAC |
| Test Voltage | 1500V DC (line-to-line) |
| 2750V AC (line-to-ground) | |
| Operating Frequency | 50/60Hz |
| Insulation Resistance | >50MΩ @500V DC |
| Climate Category | 25/085/21 |
| Enclosure Material | Nickel-plated Steel |
Dimensions

Insertion Loss Reference Curves

Wiring Method

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FAQ
1. What is a Standard Signal Isolator Circuit used for?
A Standard Signal Isolator Circuit is designed to suppress high-frequency interference in three-phase systems such as UPS, switching power supplies, and power distribution cabinets. It ensures stable and safe operation of sensitive electronics in industrial automation and power electronics applications.



