WCM604 series current sense transformer is an ideal solution for current sensing up to 100 amps of rms current at frequency from 50 Hz to 1 kHz. This product is available in 250, 500 and 1000 turn versions and all generate a very high degree of accuracy. Isolation to meet or exceed any safety agency requirements can be achieved by the use of insulated wire for the single turn current windings. WCM604 series current sense transformers are an excellent choice for sensing current to 20 amps in a low-profile SMD package. Designed for switching power supply applications, they will accommodate frequencies from 100 kHz to 1 MHz with excellent linearity. The product also provides 3000 Vac isolation between the current and sense windings for safety agency compliance.