What this MCCB carries and where it fits
The Siemens SENTRON 3VA1112-4GD46-0AA0 is a 4-pole molded case circuit breaker rated for line protection, with a TM210 thermal-magnetic release and a continuous current of 125 A at 40 °C through 50 °C. That 125 A holds flat across the typical panel ambient — only starts to taper at 55 °C (122 A) and reaches 114 A at 70 °C, so no derating headache for most enclosures. The interrupting ratings climb to 121 kA at 240 V AC and 75.6 kA at 415 V AC, with 52.5 kA at 440 V and 11.9 kA at 500 V and 690 V. Insulation voltage is rated 800 V, operating voltage 690 V AC. The front carries IP40 protection — fine for a clean indoor panel, not for washdown.
Integration notes for the panel builder
The breaker measures 101.6 mm wide, 130 mm high, and 70 mm deep — a standard 4-pole MCCB footprint that fits most DIN-rail or screw-mount panel layouts. No undervoltage release, no communication function, no trip indicator on this variant; the TM210 release is a straight thermal-magnetic, so coordination studies rely on the standard time-current curve. The N-conductor protection is designed for 100 % rating, meaning the neutral pole carries the same ampacity as the phase poles — important for 4-wire systems where neutral loading is not reduced.