Product overview
SCT7xxx
17
Version: 1.2
3-phase ring-type current transformers
Fig. 8: SCT3xxx
The compact SCT3xxx 3-phase ring-type current transformers for direct mounting under commonly used
power switches measure primary currents from 3 x 50 to 3 x 600 A, with secondary currents of 1 or 5 A. The
whole of the SCT3xxx series is available in accuracy class 1 and is supplemented by the SCT3121-0125 and
SCT3121-0150 current transformers in accuracy class 0.5.
3-phase ring-type current transformers
SCT3111
Accuracy class 1,
primary current 3 x 0…50 A AC to 3 x 0…150 A AC,
secondary current 1 A AC,
max. diameter round conductor 13.5 mm (size 1)
SCT3121
Accuracy class 0.5,
primary current 3 x 0…125 A AC / 3 x 0…150 A AC,
secondary current 1 A AC,
max. diameter round conductor 13.5 mm (size 1)
SCT3215
Accuracy class 1,
primary current 3 x 0…100 A AC to 3 x 0…250 A AC,
secondary current 5 A AC,
max. diameter round conductor 18 mm (size 2)
SCT3315
Accuracy class 1,
primary current 3 x 0…250 A AC to 3 x 0…600 A AC,
secondary current 5 A AC,
max. diameter round conductor 22 mm (size 3)
