SFCL devices exploit the sharp superconductor-to-normal transition state, allowing them to self-trigger instantaneously when fault currents exceed critical levels (Ic).
Our resistive SFCL architectures use REBCO tapes maintained in a cryogenic vessel — shifting safely into high impedance in less than 2 milliseconds. Inductive (saturated core) SFCL setups utilize an advanced HTS DC bias coil to achieve the same unparalleled protection metrics.