What this MCCB is and what it does
The Siemens 3VA2110-5HN36-0CA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across a full ambient range of 40 °C to 70 °C — no derating needed in a warm panel. Its 3-pole design with an undervoltage release (UVR) makes it a fit for motor branch circuits or feeder protection where a loss-of-voltage trip is required by code or machine safety logic.
Interrupting capacity — what the numbers mean for your fault-current study
This breaker carries 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. At 240 V it handles the highest available fault current typical of a transformer-fed 208Y/120 panel; at 480Y/277 V the 121 kA rating covers most industrial service-entrance or sub-feed applications. The steep drop to 3.7 kA at 690 V means it is not intended for 600 V class primary protection — that is a different frame.
Panel fit and dimensions
The 3VA2110-5HN36-0CA0 measures 105 mm wide, 181 mm high, 86 mm deep — a 3-pole frame that fits standard Siemens SENTRON mounting plates and busbar systems. The 86 mm depth (3.39 in) is shallow enough for most 200 mm deep enclosures without crowding the gland plate.
Undervoltage release and auxiliary options
Factory-fitted with an undervoltage release (UVR) — the UVR trips the breaker when control voltage drops below a set threshold, which is typical for emergency-stop circuits or undervoltage protection on motor starters. No ground-fault monitoring, no communication module, no trip indicator on this variant. The basic switch assembly order code is 3VA21105HN360AA0.