The 52120A/COIL6KA, COIL, 50 TURN, 6000 AMP is a 12 V-powered coil with a maximum compliance voltage rating of 4.5 volts RMS. Also convectively cooled, it may run continuously at 120 amps, allowing it to calibrate interruptible Rogowski coils, of lengths greater than 18 inches, at up to 6000 amps.