High Current Limiters

G&W Electric’s High Current Limiter was developed at the request of a major utility. It features interrupt ratings to 120 kA thereby filling a void with traditional fuses limited to 50 kA. This eliminates the need for costly reactors. A primary application is in transformer tertiary winding circuits. It is a backup fuse intended to be applied in series with lower rated interrupters. Overloads are cleared by the lower rated device while major faults are cleared by the limiter.

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Electrical Ratings Chart for High Current Limiters (HCLs)
Max. VoltageUp to 38kV
BIL ImpulseUp to 200kV
Continuous CurrentThrough 50A
Interrupting RatingUp to 120kA sym
Product Literature

High Current Limiter