It carries a shunt trip release for remote emergency disconnect and supports communication functions for integration into higher-level monitoring systems.
This MCCB delivers 242 kA interrupting capacity at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V. The steep drop at 690 V means this frame is optimized for 480 V and 600 V class systems — at 690 V the 7.5 kA rating limits its use to low-fault locations or downstream of a current-limiting device. Above that, derate linearly: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. In a hot panel near the top of a switchboard, factor the actual ambient — the 400 A nameplate holds only up to 50 °C.
Built-in release and auxiliary options
Communication and other measurement functions are available, indicating the electronic trip unit supports data export for energy management or SCADA polling.