SUM series summation current transformers are designed for totaling multiple synchronous AC currents with similar phase positions. They are ideal for monitoring applications but not for tariff metering. The series offers flexible mounting: the SUM125 can be installed with four M6 screws or on a 35mm DIN rail, while the SUM155 requires four M6 screws. Horizontal mounting is essential for all models to prevent overload and ensure accurate performance.
Summation Current Transformer
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