The Siemens SENTRON 3VA1116-4EF32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 160 A continuously at 40 °C with a TM240 thermal-magnetic release. Its interrupting capacity reaches 121 kA at 240 V, 75.6 kA at 415 V, and 52.5 kA at 440 V, with a rated insulation voltage of 800 V. This is a current-production part within the SENTRON 3VA platform, designed for panelboard and distribution switchgear integration.
Breaking capacity and selectivity
The 121 kA at 240 V is the headline figure, but the 75.6 kA at 415 V is the one that governs most industrial 400 V distribution panels. At 690 V the rating drops to 11.9 kA — still adequate for most motor-circuit applications, but verify the available fault current at the point of installation. The 800 V rated insulation voltage (Ui) means the breaker can be used in 690 V systems without derating the internal isolation.
Thermal-magnetic release and derating
The TM240 release is a fixed thermal-magnetic trip unit rated for 160 A at 40 °C. The breaker holds 160 A up to 50 °C, then derates linearly to 150 A at 70 °C. If the panel ambient runs above 50 °C, the continuous current must be adjusted per the published curve. The maximum power loss is 38 W, which matters for enclosure thermal calculations when multiple breakers are ganged.
Physical fit and auxiliary configuration
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep. The 76.2 mm width is a standard 3-pole MCCB footprint — it occupies three 25.4 mm module positions on a DIN rail or panel-mount base. It ships with one auxiliary switch and one trip alarm switch (HP type) factory-installed. No undervoltage release, no ground-fault monitoring, and no communication module are included on this variant.