What this MCCB is and where it fits
The Siemens 3VA1196-4GF42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 16 A continuous current with a 4-pole configuration. It is designed for line protection in distribution panels and switchboards, providing overcurrent and short-circuit protection for feeders and branch circuits. The TM240 overcurrent release combines a thermal element for overload protection and a magnetic element for short-circuit response, tuned for 240 A short-circuit pickup. The 16 A rating is maintained without derating across the 40 °C to 55 °C ambient range, dropping to 15 A at 60 °C to 70 °C — useful for panels that run warm in summer conditions.
Breaking capacity — the real selectivity number
Breaking capacity is the headline spec for an MCCB, and this one delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 415 V — the most common industrial three-phase voltage — 75.6 kA covers high-fault scenarios like transformer-secondaries or large motor banks. The 11.9 kA at 690 V is still adequate for most 690 V distribution but worth checking against your available fault current if you are feeding a heavy load. The 800 V rated insulation voltage confirms the internal clearances are sized for 690 V line-to-line service.
Physical fit and panel integration
Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a 4-pole MCCB that fits standard Siemens 3VA panel cutouts and busbar systems. The IP40 rating on the front means it is protected against tools and small wires entering the front face, standard for enclosed distribution boards. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. Power loss at rated current is 10.6 W maximum — negligible for panel thermal calculations but worth noting if you are packing multiple breakers in a sealed enclosure.