SENTRON 3VA1010-3ED36-0BH0 — 100 A MCCB, line protection
The Siemens 3VA1010-3ED36-0BH0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C, with a 3-pole configuration and a TM210 thermal-magnetic overcurrent release. This is the line-protection version — no voltage trigger or ground-fault monitoring — so it's a straight disconnect for feeders and distribution panels where you need selective coordination downstream of a main breaker. Breaking capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. That spread covers most industrial low-voltage networks — the 415 V figure is the one to check for European 400 VAC panels; it's high enough to handle typical transformer-fed fault currents without cascading upstream.
Thermal derating and enclosure fit
The 100 A rating holds flat from 40 °C through 50 °C, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. If this breaker lives in a non-ventilated enclosure near other heat sources, use the 60 °C or 65 °C column — the 90–94 A range still covers a 90 A feeder without oversizing the frame. Footprint is 70 mm deep, 76.2 mm wide, 130 mm tall — standard 3-pole MCCB envelope that clips onto a DIN rail or mounts with screws. IP40 on the front keeps out tools and dust in a closed panel; the storage range of -40 °C to 80 °C means it can sit in an unheated warehouse or a hot roof-top enclosure without damage.
Auxiliary contacts and undervoltage release
This variant ships with 2 auxiliary switches plus 1 trip alarm switch (HQ configuration), and includes an undervoltage release (UVR). The UVR is factory-fitted as the auxiliary release — it drops the breaker when control voltage falls below a threshold, which is standard for emergency-stop chains or undervoltage protection on motor feeders. The auxiliary contact block part number for replacement is 3VA9608-0BB11. Mechanical endurance is 15,000 operations — typical for a panelboard MCCB that sees occasional switching, not a daily motor-start duty cycle. For higher cycle counts, look at the 3VA2 series with higher endurance ratings.