What it is and what it does
The Siemens 3VA2010-5HL36-0BE0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That 100 A holds steady at every 5 °C increment, so it's sized for a 100 A feeder or a 100 A motor branch circuit without having to oversize for a hot panel. Three-pole design, line-protection configuration, and an integrated undervoltage release (UVR) that drops the breaker if control voltage is lost — common in safety circuits where a loss of 24 VDC or 120 VAC control power needs to kill the load. No trip indicator on the front face, so fault diagnosis relies on the UVR state or downstream indication.
Breaking capacity — what the numbers mean for your panel
The interrupting ratings climb with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 187 kA at 240 V is a high-fault rating — it means this breaker can safely clear a bolted fault on a 240 V secondary with a transformer large enough to deliver that current, without the arc re-striking or the case rupturing. At 690 V the rating drops to 3 kA, which is still adequate for most 690 V motor circuits where the available fault current is transformer-limited. The 100 A frame carries a minimum trip setting of 150 A and a maximum of 1 200 A — that's the magnetic (instantaneous) pickup range, not the continuous rating. For a 100 A feeder, the thermal element is fixed at 100 A; the magnetic adjustment lets you coordinate with downstream breakers or motor starters without changing the frame.
Panel fit and integration
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for the 3VA frame — it fits the same panel cutout and bus-bar spacing as other 3VA 100 A units. The 86 mm depth includes the arc chamber and terminal clearance; verify that the enclosure depth leaves at least 10 mm behind the breaker for cable bending radius. The auxiliary switch block is pre-configured with four HQ auxiliary switches (form C contacts). That's enough for remote status indication (open/closed/tripped) plus a spare pair for a PLC input or a panel lamp. The undervoltage release is a separate coil module that mounts on the left side of the breaker; it's wired in series with the control transformer or safety relay output.