Siemens 3VA2010-5JQ32-0AD0 — SENTRON MCCB for Line Protection
The Siemens 3VA2010-5JQ32-0AD0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a 100 A continuous rating across the full 40 °C to 70 °C ambient range, meaning no derating is needed for elevated panel temperatures up to 70 °C — a practical advantage when the breaker shares an enclosure with other heat-generating components. Interrupting capacity is the headline spec here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. For a 100 A frame, those numbers place it in the high-interrupting category — it handles fault currents that would weld a standard MCCB's contacts shut. The steep drop at 690 V (3 kA) is typical for this class; the breaker is not intended for 690 V line-side faults above that level. The 3-pole design suits three-phase distribution. It ships with three auxiliary switches (HQ type) pre-installed, which saves a separate order for status feedback to a PLC or building management system. The auxiliary switches are wired for summation current formation on the ground-fault monitoring version, so if ground-fault detection is part of the scheme, the breaker's internal CT arrangement is already configured for it.
Mounting and Panel Fit
Dimensions: 181 mm height, 105 mm width, 86 mm depth. The 105 mm width is the standard 3-pole MCCB footprint for this frame size — it fits existing SENTRON mounting bases and busbar systems without adapter plates. Depth of 86 mm leaves clearance for rear-connected busbars in a typical 200 mm deep enclosure.