The Siemens SENTRON 3VA2010-5HL36-0CL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection at 100 A continuous current at 40 °C, with an ETU320 electronic trip unit. It carries a 187 kA interrupting capacity at 240 V, derating to 121 kA at 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V — the high short-circuit ratings at low voltage make it a strong choice for main feeder or high-fault panels where SCCR headroom is non-negotiable.
Ratings and what they mean for the panel
The 100 A rating holds flat from 40 °C through 50 °C, then derates to 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. That thermal curve means you can load it to full nameplate in a 50 °C enclosure without bumping the frame size — useful for a packed panel where internal ambient runs high. Rated insulation voltage Ui is 800 V, so the breaker is suitable for 690 V systems with margin. The 3-pole form factor fits standard SENTRON mounting footprints; depth is 86 mm, width 105 mm, height 181 mm — verify panel cutout against an existing 3VA frame before swapping. The ETU320 trip unit provides electronic overcurrent protection with adjustable settings (not listed here, but standard for the ETU320 platform). A built-in undervoltage release (UVR) is included — part of the auxiliary release design — so if you need UV protection on the feeder, this variant saves an external add-on module. Auxiliary contact configuration is 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ (high-qualified). That gives you status feedback for PLC or SCADA without a separate contact block.