What this MCCB carries and why it matters
The Siemens SENTRON 3VA2010-5HL36-0BL0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal budgeting. Its line protection design means the thermal-magnetic trip curve is optimized for cable and busbar protection rather than motor-starting duty; pair it with a contactor if you are switching a motor load. Breaking capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V. The 187 kA figure at 240 V covers high-fault utility feeds; the drop to 3 kA at 690 V means this frame is not the right choice for 690 V primary distribution unless the available fault current is known to be below that threshold. For standard 400–480 V industrial panels the 121 kA rating gives ample headroom against most transformer-fed SCCR requirements. The breaker ships with an undervoltage release (UVR) as the auxiliary release and a complement of 2 auxiliary switches plus 1 trip alarm switch plus 1 electrical alarm switch. The UVR is wired in parallel with the control supply — if the control voltage drops, the breaker opens, which is a common safety interlock pattern for emergency-stop circuits or undervoltage protection on a machine.
Panel fit and mounting dimensions
The 3VA2010-5HL36-0BL0 measures 86 mm deep, 105 mm wide, and 181 mm tall (–). The 105 mm width is the standard 3-pole MCCB footprint for this SENTRON frame size — it occupies three adjacent 35 mm DIN-rail positions (or the equivalent panel-mount cutout). The 86 mm depth leaves clearance for rear-access cable connections in a standard 200 mm deep enclosure; verify the cable bending radius if you are routing large conductors behind the breaker.