MCCB for high-current line protection
The Siemens 3VA2440-6HN32-0HH0 is a SENTRON molded case circuit breaker rated at 4800 A continuous, 3-pole, designed for line protection in industrial distribution panels. Its breaking capacity reaches 242 kA at 240 V AC and 187 kA at 415 V AC, dropping to 9 kA at 690 V AC — the voltage-dependent curve means you size the SCCR for the actual line voltage, not the highest number. The breaker carries its full 400 A rating across the entire 40 °C to 70 °C ambient range — no derating needed for warm enclosures. Max power loss is 63.5 W, which matters for thermal management inside a sealed panel. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — fits standard SENTRON mounting patterns. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
Integrated accessories and release options
Factory-fitted with a shunt trip release (STL) and an auxiliary switch block carrying 2 auxiliary switches plus 1 trip alarm switch (HQ designation). The trip indicator and voltage trigger are present. No undervoltage release, no ground-fault monitoring, no communication function on this variant. The basic switch order code is 3VA2440-6HN32-0AA0. This suffix -0HH0 adds the shunt trip and auxiliary switch package.