Schneider Electric 5101 Current Transformer

Schneider Electric Square D 5101 current transformer. This device is a current transformer used to sense electrical current by producing a proportional, isolated secondary current for connection to measurement or protection equipment. Designed for use in electrical distribution and control circuits, the 5101 provides a safe, scaled representation of the primary current that instrumentation, meters, or relays can read without exposing these devices to high current. As part of the Square D line, the 5101 is intended to fit within standard Schneider Electric electrical distribution assemblies, supporting integration with compatible metering and protection devices. Current transformers in general serve to isolate measurement circuits from high-power conductors while delivering a stable secondary signal suitable for energy monitoring, fault detection, and relay operation in industrial and commercial installations. Like other current transformers, the 5101 is designed to provide accurate, repeatable measurements across a range of load conditions, enabling reliable metering, monitoring, and control. Because it carries high primary current while isolating the measurement circuit, the device supports safe integration with low-voltage instrumentation and protective relays in panel assemblies.