What the interrupting ratings mean for panel coordination
The Siemens SENTRON 3VA2010-5KP32-0JL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 100 A and an insulation voltage Ui of 800 V. Its interrupting capacity is the headline figure for panel builders: 187 kA at 240 V, 121 kA at 415 V and at 440 V, 79 kA at 500 V, and 3.4 kA at 690 V. That 187 kA at 240 V means this breaker can safely clear a fault up to that level without rupturing or cascading upstream — critical for high-fault installations like transformer secondaries or large motor control centers where available fault current exceeds typical 65 kA or 100 kA MCCB ratings.
Thermal derating and continuous current
The 100 A rating holds flat from 40 °C through 50 °C ambient — no derating needed in most panel environments. At 55 °C it drops to 96.25 A, at 60 °C to 92.5 A, at 65 °C to 88.75 A, and at 70 °C to 85 A. If your enclosure runs hot (stacked drives, transformer proximity), size the load or the breaker accordingly; the 70 °C figure is the operating maximum, not a storage limit.
Trip unit, auxiliaries, and communication
The overcurrent release is an ETU850 electronic trip unit — programmable, with LSI protection curves (long-time, short-time, instantaneous). It includes a voltage trigger and a trip indicator. The auxiliary contact configuration is 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch (HQ version). A shunt trip (STL) is integrated as the auxiliary release design. The breaker also carries a communication function and an 'other measurement function' — meaning it can report status and measurements over a bus, though the specific protocol isn't listed in this order code's detail. The basic switch sub-assembly is order code 3VA2010-5KP32-0AA0; the integrated auxiliary trip is 3VA9688-0BL32. No undervoltage release, no phase failure detection, and no ground fault monitoring on this variant.
Dimensions and panel fit
Footprint: 105 mm wide, 181 mm tall, 86 mm deep. That 86 mm depth is the dimension from the mounting surface to the front of the breaker — relevant when the gland plate or door clearance is tight. The width of 105 mm is standard for a 3-pole 100 A frame in the SENTRON 3VA platform; it will occupy the same DIN or screw-mount footprint as other 3VA 3-pole breakers in this frame size.
Environmental and compliance
Operating temperature range: -25 °C to +70 °C. Storage range: -40 °C to +80 °C. Maximum power loss is 13.5 W.