The Siemens 3VA1110-5EE32-0DH0 is a SENTRON 3-pole molded case circuit breaker rated for 100 A continuous current with a TM220 thermal-magnetic overcurrent release. Its interrupting capacity hits 187 kA at 240 V AC — that's the figure that decides whether it survives a bolted fault at the line side without venting or welding contacts. At 415 V it still clears 121 kA, and at 690 V it holds 17 kA.
What the interrupting ratings mean for your panel
The 187 kA at 240 V is the SCCR (short-circuit current rating) the breaker can safely interrupt at that voltage level. If your transformer or upstream utility fault current exceeds that, the breaker may fail to clear — so this rating is your first check when coordinating with the service entrance. The 121 kA at 415 V covers most European industrial distribution, and the 17 kA at 690 V handles the higher-voltage motor circuits common in mining or marine installations.
Thermal derating and continuous current
Rated 100 A continuous from 40 °C to 50 °C ambient. Derating starts at 55 °C (96 A), dropping to 90 A at 70 °C. If your panel runs hot — say a packed enclosure near a drive cabinet — use the 70 °C figure for the BOM line. The rated insulation voltage is 800 V, which gives headroom above the 690 V interrupting rating.
Auxiliary contacts and undervoltage release
Comes with 2 auxiliary switches plus 1 trip alarm switch (HQ type) — enough to signal breaker status and fault condition back to a PLC or annunciator. The undervoltage release (UVR) is built in, so the breaker trips when control voltage drops below a threshold. That's standard for safety circuits where loss of control power must open the load.
Physical fit and panel integration
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. The 76.2 mm width is standard for a 3-pole MCCB on DIN rail — it occupies three 25.4 mm module spaces. IP40 on the front means the breaker face is protected against tools and wires over 1 mm, but the enclosure must handle the rest.
Operating environment
Rated for -25 °C to 70 °C operating ambient, with storage from -40 °C to 80 °C. That covers most indoor industrial panels, including unheated warehouses or roof-mounted enclosures in temperate climates. The 15 000 mechanical latching cycles are adequate for infrequent switching — this is a line-protection breaker, not a daily disconnect switch.