What this MCCB carries and where it fits
The Siemens SENTRON 3VA1110-6EF46-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous at 45 °C and 50 °C, derating to 91 A at 70 °C. Its TM240 thermal-magnetic release gives fixed thermal and adjustable magnetic pickup (up to 1000 A li max), making it a line-protection device for distribution panels feeding motor control centers or general loads. The interrupting capacity is 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V — numbers that tell you this breaker is sized for high-fault locations like transformer secondaries or large switchboards, not for branch circuits with limited fault current. At 70 mm deep, 101.6 mm wide, and 130 mm tall, it fits standard SENTRON 3VA panel cutouts. The front face carries an IP40 rating — adequate for enclosed distribution boards, not for washdown zones. An optional motor drive (listed as available) allows remote charging or closing, which matters if this breaker sits in a generator or automatic-transfer scheme.
Selectivity and coordination
The 4-pole design handles three-phase plus neutral (or a switched neutral in some configurations). The TM240 release is a standard thermal-magnetic curve — not electronic, so no adjustable time-current curve beyond the magnetic pickup range. For selective coordination with downstream breakers, expect the thermal band to hold up to about 100 A continuous; the instantaneous trip starts at roughly 5–10× In depending on the magnetic setting. At 800 V rated insulation voltage, it can be used in 480/277 V or 600 V systems with adequate clearance.