Key Parameters Category Description / Value Product Line Eaton NZM3 Accessories Compatible Breakers NZM3 series breakers of specific frame sizes. Function Shunt Trip Release (for remote opening) Rated Control Supply Voltage (Us) The "PK" suffix commonly indicates a standard voltage of 230V AC. However, the exact voltage must be confirmed by the order code sticker on the device itself, as other voltages (e.g., 24V DC, 110V AC, 400V AC) are available. Mounting Mounts directly onto the compatible NZM3 breaker.