It is a 3-pole device (3P) built to EN/IEC 60947-2, intended for motor protection where only short-circuit (magnetic) protection is required — no thermal overload element. The MA trip unit responds to fault currents only; motor overload protection is handled separately by a thermal relay or motor protection relay in the circuit.
Breaking capacity and isolation
Rated breaking capacity reaches 85 kA Icu at 500 V AC 50/60 Hz, 80 kA Icu at 525 V AC, and 75 kA Icu at 660/690 V AC — the HB1 breaking capacity code.
Mounts on a backplate — flat on the back, horizontal or vertical orientation accepted. The front connection (upside and downside) uses a 35 mm connection pitch. IP40 enclosure protection keeps out tools and particles >1 mm; IK07 impact resistance handles a 2 J drop. Operating altitude derating begins above 2000 m.
No earth-leakage protection built in (no Vigi module). Relative humidity range 0–95 %. The toggle control is manual; no auxiliary contacts or shunt trip are included in this base variant.
