When you need H‑class strength on a three‑phase busbar but don’t want to pay for features you won’t use, the 3VA2063‑6HN32‑0AA0 fits perfectly. Its ETU350 LSI trip unit covers overload, short‑time and instantaneous protection without any extras—no neutral, no ground‑fault, no communication. The screw‑flat terminals (nut keeper kit) give you a secure, vibration‑proof link straight to the busbars.

Protection and adjustability

• Overload L: Ir 25‑63 A (I²t curve, delay tr 0.5‑17 s).
• Short‑time S: Isd 1.5‑10 × Ir (based on Ir; tsd 0.0001‑0.4 s).
• Instantaneous I: Fixed Ii = 12 × In (756 A).
• No neutral‑conductor protection, no ground‑fault monitoring.
• Full 63 A rating maintained from 40 °C up to 70 °C ambient.

Technical specifications at a glance

• Rated insulation voltage Ui: 800 V AC; operational voltage Ue: 690 V AC.
• Breaking capacity Icu/Ics @415 V: 85 kA (H); Icm: 187 kA.
• Mechanical life: 25 000 ops; electrical: 15 000 ops @415 V (10 500 ops @690 V).
• Power loss: 1.8 W/pole (hot state), 5.4 W total max.
• Degree of protection: IP40 (front face).
• Net weight: 2.098 kg; Country of origin: Czech Republic.
• Standard: IEC/EN 60947‑2.

Installation and typical applications

• Fixed mount on 35 mm DIN rail; nut keeper kit (screw‑flat connector) for busbar or heavy‑lug termination.
• Designed for high‑fault main switchboards, motor control centres, and industrial distribution panels where 3‑pole switching is enough and neither neutral switching nor remote monitoring is required.