What it is and what it does
The Siemens SENTRON 3VA2110-5HM36-0AA0 is a 3-pole molded case circuit breaker (MCCB) for line protection, carrying a continuous current rating Iu of 100 A across the full ambient range from 40 °C to 70 °C — no derating curve to chase at elevated panel temperatures. Its interrupting ratings step down with system voltage: 187 kA at 240 V, 121 kA at 415 V and at 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — covering most industrial distribution levels without a series-rating stack. The electronic trip unit is the ETU330, a programmable curve with adjustable long-time, short-time, and instantaneous settings plus ground-fault protection via summation current sensing on the L-conductor. No undervoltage release, no voltage trigger, and no communication module on this variant — it is a standalone thermal-magnetic replacement footprint with electronic accuracy.
Panel fit and environmental limits
Dimensions are 181 mm high, 105 mm wide, and 86 mm deep — fits standard MCCB mounting patterns in SENTRON switchboards and third-party enclosures with the same 3-pole footprint. IP40 on the front protects from tool contact in a closed panel; the rest of the case is open to the cabinet air for cooling. Operates from -25 °C to 70 °C ambient; storage range is -40 °C to 80 °C. Power loss at full load is 10 W maximum, manageable in a ventilated enclosure without forced air for a single breaker.
What the ratings mean for your decision
The 100 A continuous rating holds flat from 40 °C to 70 °C, so you can install this in a warm cabinet (near a drive or transformer) without recalculating ampacity — unusual for an MCCB, where many competitors start derating above 40 °C. The 187 kA at 240 V and 121 kA at 415 V mean this breaker can be the main or branch device in high-fault-current installations (utility transformer secondaries, large motor control centers) without a current-limiting fuse ahead of it. At 690 V the rating drops to 3.7 kA, so it is not suited for 690 V high-fault locations.