What this MCCB is and what it does
The 3VA1010-4ED36-0JA0: The TM210 release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit protection, sized for general distribution and motor branch-circuit duty where adjustable thermal pickup is not required. Rated insulation voltage is 800 V, so the breaker is suitable for 480/277 V and 600 V panelboards with adequate clearance — the 800 V Ui covers most North American and IEC low-voltage installations.
Breaking capacity — what the ratings mean for coordination
This MCCB delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The 121 kA at 240 V is the headline figure: it means the breaker can safely interrupt a fault current up to that level without rupturing, which is critical for high-available-fault installations like large transformer secondaries or utility tie points. At 415 V the 75.6 kA rating covers most European industrial distribution panels where the prospective short-circuit current at the main switchboard is typically 50–65 kA — this breaker provides headroom above that common threshold.
Thermal derating — real-world current capacity at elevated panel temperatures
The 100 A rating holds at ambient temperatures up to 50 °C. Above that it derates: 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. If the panel internal temperature runs hot — common in sealed enclosures or near other heat sources — the 90 A floor at 70 °C still leaves usable capacity for a 90 A continuous load.
Panel fit and mounting
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. The 76.2 mm width is a standard 3-pole MCCB footprint (roughly 3 inches), so it fits existing SENTRON 3VA panel cutouts and busbar risers without adapter plates. Front-face protection is IP40 — suitable for enclosed panel mounting where tools or fingers cannot contact live parts through the front cover. No IP rating on the rear or sides; the breaker relies on the enclosure for overall ingress protection.
Accessory and release configuration
This variant ships without auxiliary contacts or undervoltage release, but it includes a shunt trip (STL) release designed for remote tripping. The integrated auxiliary trip accessory is order code 3VA9688-0BL32 — order it alongside if you need remote-trip indication or a separate control circuit. No communication function, no phase-failure detection, and no ground-fault monitoring are built in. This is a plain line-protection MCCB — if you need those features, look at the 3VA1 with electronic releases or the 3VA2 series with communication modules.