The Schneider Electric C10B3TM016 is a ComPacT NSX100B moulded-case circuit breaker with a 16 A thermal-magnetic TM-D trip unit, three poles, and a B-frame breaking capacity of 25 kA Icu at 415 V AC. Rated to EN/IEC 60947-2, it is designed for distribution in panelboards and switchboards where the 16 A rating protects branch circuits feeding motor starters, lighting, or small power loads. The 105 mm width and 161 mm height fit standard backplate mounting, with front-facing connections that keep wiring accessible in a multi-breaker lineup.
At 240 V AC the rating climbs to 40 kA Icu. The breaker is category A (no intentional short-time delay), so it trips instantaneously on magnetic pickup; selectivity with downstream MCBs relies on the TM-D curve's magnetic threshold.
Front-facing line and load connections simplify wiring in a multi-row panel; the toggle handle protrudes 86 mm from the mounting surface. IP40 front face keeps tools and fingers out; IK07 impact rating handles accidental tool drops during commissioning.
Thermal-magnetic protection and durability
The TM-D trip unit combines a thermal bimetal for overload protection (L protection) and a magnetic coil for short-circuit protection (I protection). Power dissipation is 2.92 W per pole, so a three-pole breaker dumps about 8.8 W into the enclosure; for a dense lineup, factor that into your thermal budget. Mechanical durability is 50,000 operations; electrical durability at 440 V In is 30,000 cycles, which covers frequent switching in a motor-control centre.