What this MCCB carries for a vessel or industrial panel
The Siemens 3VA2010-6HN36-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection in distribution panels. It carries 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating curve to chase above 40 °C, which simplifies panel calc in a hot machinery space. Breaking capacity sits at 242 kA at 240 VAC, 187 kA at 415/440 V, and 121 kA at 500 V. At 690 V it drops to 3 kA — that last figure governs if you are feeding a 690 V drive bus; the 240–500 V numbers cover most marine and industrial secondary distribution. Three-pole construction, 86 mm deep × 105 mm wide × 181 mm tall. Fits standard Siemens SENTRON mounting base; the 105 mm width matches the 3VA2 frame footprint.
Auxiliary and release configuration — what is inside the cover
Factory-fitted with an undervoltage release (UVR) and a 2 auxiliary switch + 1 trip alarm switch HQ block. The UVR drops the breaker on loss of control voltage — standard for emergency-stop chains and undervoltage protection schemes that need a positive open on power loss. No communication function or ground-fault monitoring on this variant. If you need Modbus or GFCI, step to the 3VA2 with communication module or the 3VA2 with ground-fault option.
Environmental and installation limits
Operating temperature range −25 °C to +70 °C; storage from −40 °C to +80 °C. Maximum power loss 16 W — negligible for panel thermal budgeting but worth noting if the breaker is enclosed in a small glanded box with no forced ventilation. Trip indicator present; no voltage trigger. The undervoltage release is the only auxiliary release fitted — no shunt trip on this code.