SENTRON 3VA1020-4ED32-0HA0 — 20 A MCCB with Shunt Trip, Line Protection
It carries a 20 A continuous rating at 40 °C across all three poles, with no derating needed up to 55 °C — only a 1 A drop at 60 °C and above.
Breaking Capacity Across Voltages — Selectivity Planning
The interrupting rating drops as system voltage rises: 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a 480 V panel, the 52.5 kA figure at 440 V is the closest reference — still well above typical 480 V SCCR requirements for most commercial and light industrial installations.
The 3VA1020-4ED32-0HA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a compact 3-pole footprint that fits standard SENTRON 3VA mounting bases and busbar systems. Maximum power loss is 12 W, so ventilation in a sealed enclosure is advisable if multiple breakers are ganged.