What this MCCB carries and where it fits
The Siemens 3VA2110-5JP32-0DC0 is a SENTRON molded case circuit breaker rated for 100 A continuous current with an adjustable thermal-magnetic trip range from 150 A minimum to 1 200 A maximum — meaning you set the pickup to match the load, not the other way around. It is a 3-pole unit built for line protection, so it sits at the feeder or branch in a distribution panel, not on a motor starter. The interrupting ratings are the headline: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V means this breaker can safely clear a fault up to 187 000 A without welding contacts or venting gas into the enclosure — critical for high-fault-capacity panels near large transformers or utility feeds. At 690 V the rating drops to 3.7 kA, which still covers most industrial 690 V distribution but tells you the arc energy at that voltage is the limit. Thermal performance is flat across the board: 100 A at 40 °C, 45 °C, 50 °C, 55 °C, 60 °C, 65 °C, and 70 °C. No derating curve to calculate — if the ambient inside the panel hits 70 °C, this breaker still holds its full 100 A rating. That saves you a frame size upgrade in a hot enclosure.
Built-in auxiliaries and release
This variant ships with an undervoltage release (UVR) and two HQ auxiliary switches. The UVR trips the breaker when control voltage drops below a threshold — standard for safety circuits where a loss of control power must open the main contacts. The two HQ aux switches give you status feedback (open/closed/tripped) for the PLC or annunciator without adding external relays. It also carries a communication function, so it can talk to a higher-level system for metering or remote trip indication — useful in a monitored distribution panel where you want to know which breaker opened before you walk the floor.
Panel fit and environmental range
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That 86 mm depth is the body only — account for the handle throw and wiring space behind the panel. It mounts on a DIN rail or direct to the backplate; the 105 mm width means it takes three 18 mm pole spaces plus a bit for the aux switch housing. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage limit is the handling limit — if it sat in an unheated warehouse at -40 °C, it's fine once it warms up before energizing. Power loss at full load is 12.5 W, so plan for that heat in a sealed enclosure.
Lifecycle and sourcing
For a BOM freeze or a panel that was specified around the 3VA1110-5EF32-0AM0, this 3VA2110-5JP32-0DC0 is a different frame and trip range — the 3VA1110 is a 160 A frame, this is a 1 200 A frame. They are not drop-in interchangeable; check the panel cutout and bus bar spacing before substituting.