It carries a 25 kA Icu breaking capacity at 415 V AC (50/60 Hz) per IEC 60947-2, with higher ratings at lower voltages: 40 kA at 240 V, 20 kA at 440 V, and 15 kA at 500 V. The TM-D trip provides L (thermal overload) and I (magnetic short-circuit) protection, adjustable via the trip unit dials. This is a distribution-grade breaker, not a motor-protective device — it lacks the electronic trip curves and ground-fault options of the NSX Micrologic series. The B breaking capacity code (25 kA at 415 V) suits it for secondary distribution panels with moderate fault levels.
Front connections top and bottom, with a 35 mm connection pitch. Power dissipation is 4.03 W per pole at rated current — 12.1 W total for the 3-pole unit. Factor that into panel thermal calculations, especially in a sealed enclosure. The IK07 impact rating means it withstands a 2 J hammer blow, typical for panel-mount gear.
Electrical durability and ratings
Mechanical endurance is 50,000 cycles; electrical endurance varies with load: 50,000 cycles at 440 V at half rated current (In/2), 30,000 cycles at full In, 20,000 cycles at 690 V In/2, and 10,000 cycles at 690 V In. The 32 A rating is at 50 °C ambient — no derating required at that temperature. Operating altitude is 2000 m without derating, 2000–5000 m with derating.