Triad's CST25 series of current sense transformers are ideal for monitoring currents in high frequency applications such as switch-mode power supplies, LED lighting, etc. The CST25 series is offered with a built-in sense winding allowing for ease of use. These current sense transformers are fully encapsulated allowing for a high isolation of 4000 VAC between primary and secondary windings. There are five different popular turn ratios available to choose from.
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Item #

Inductance Sec (mH Min)

DCR
Sec (MAX)

Ratio
Pri/Sec

Pri Current
Amps Max

ET Max

N/A 4.7 mH N/A 0.5 Ohm N/A 1:50 N/A 25 A N/A 175 VµSEC
N/A 18.0 mH N/A 2.0 Ohm N/A 1:100 N/A 25 A N/A 350 VµSEC
N/A 76.0 mH N/A 4.5 Ohm N/A 1:200 N/A 25 A N/A 700 VµSEC
N/A 470 mH N/A 16.0 Ohm N/A 1:500 N/A 25 A N/A 1750 VµSEC
N/A 1900 mH N/A 50.0 Ohm N/A 1:1000 N/A 25 A N/A 3500 VµSEC
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