Siemens SENTRON 3VA2110-5HN32-0HC0 — 100 A MCCB with Shunt Trip
The Siemens 3VA2110-5HN32-0HC0 is a SENTRON-series molded case circuit breaker (MCCB) designed for line protection in industrial power distribution. It carries a continuous current rating of 100 A across the full ambient temperature range from 40 °C to 70 °C, meaning no derating is needed for typical panel environments up to 70 °C — a practical advantage for tightly packed enclosures where heat buildup is a concern. The interrupting capacity reaches 187 kA at 240 VAC, 121 kA at 415 VAC and 440 VAC, and 75.6 kA at 500 VAC, with a sharp drop to 3.7 kA at 690 VAC. This high-fault rating at common low-voltage levels (240–480 V) makes it suitable for installation close to large transformers or in high-fault-capacity main feeders where SCCR coordination is critical.
Built-in Auxiliary Switches and Shunt Trip
This variant ships with two auxiliary switches (HQ type) and a shunt trip release (STL), enabling remote tripping and status feedback without requiring separate add-on modules. The shunt trip allows a PLC or safety relay to open the breaker on command — useful for emergency-stop circuits or remote load shedding. The auxiliary switches provide position indication for the panel HMI or DCS. The breaker does not include undervoltage release, ground-fault monitoring, or communication functions — it is a straightforward line-protection device with basic remote control capability. Panel builders should plan for the shunt trip wiring (typically 24 VDC or 110 VAC coil, verify per site) and the auxiliary contact terminations.
Dimensions and Panel Fit
The 3VA2110-5HN32-0HC0 measures 181 mm high, 105 mm wide, and 86 mm deep — a 3-pole MCCB footprint that fits standard Siemens SENTRON mounting patterns. The 105 mm width (4.13 inches) is typical for a 100 A frame, and the 86 mm depth (3.39 inches) leaves clearance for rear-connected busbars or cable lugs in a distribution panel.