The 1-pole form factor occupies 27 mm (one width unit) on DIN rail. A built-in auxiliary switch (1 NO + 1 NC) gives remote status feedback without adding a separate side-mount module — useful for PLC-based fault annunciation or load-shedding logic.
The 27 mm width matches a single modular unit — no extra space needed for the integrated aux switch. Both top and bottom terminals are combined (phase + neutral or phase + outgoing), which reduces the number of terminal blocks needed in the panel.
Sealable design allows tamper-proof lockout for safety isolation. Breaking capacity is rated at 10 kA per EN 60898, 20 kA per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No. 235. Overvoltage category III. The energy limiting class is 3, meaning it restricts let-through energy enough to protect downstream wiring and devices during a fault.