160 A, 4-pole MCCB with TM240 release — line protection for high-fault panels
The Siemens SENTRON 3VA1116-6EF46-0AA0 is a 4-pole molded case circuit breaker rated at 160 A continuous (Iu) with a TM240 thermal-magnetic overcurrent release, configured for line protection. Its headline breaking capacity hits 220 kA at 240 V and 154 kA at 415 V — figures that place it squarely in high-fault-current distribution panels where upstream transformer capacity or parallel-fed buswork drives prospective short-circuit levels well above what a standard 65 kA MCCB can clear. The TM240 release gives an adjustable li (instantaneous magnetic pickup) up to 1600 A, so you tune the magnetic trip to coordinate with downstream branch breakers without nuisance tripping on motor inrush. The 160 A rating holds flat from 45 °C to 50 °C ambient, then derates gradually to 150 A at 70 °C — a thermal curve that matters when this breaker sits in a crowded enclosure with other heat sources. The 4-pole construction (switched neutral) suits three-phase plus neutral systems common in North American and IEC distribution, and the IP40 front protection keeps panel-side tools and fingers out of live parts during maintenance.
Breaking capacity across voltage levels — where this MCCB fits
At 440 V the 3VA1116-6EF46-0AA0 still clears 75.6 kA, and at 500 V and 690 V it holds 17 kA. That 17 kA at 690 V is the limiting case for 600 V class industrial systems; if your panel's available fault current at 480 V is under 75 kA, this breaker has headroom. The rated insulation voltage Ui of 800 V confirms the internal creepage and clearance are designed for 690 V line-to-line systems, so it's not a derated 480 V device pushed higher — it was engineered for the full IEC 60947-2 690 V class.
Panel integration — DIN rail or screw-mount, 101.6 mm wide
The 3VA1116-6EF46-0AA0 measures 101.6 mm wide by 130 mm tall by 70 mm deep — a 4-inch wide footprint. It mounts via DIN rail or screw-fix to a backplate. Maximum power loss is 38 W.