What this MCCB carries
The Siemens 3VA1116-5EE36-0KA0 is a SENTRON molded case circuit breaker (MCCB) rated for 160 A continuous at 40 °C ambient, with a 3-pole configuration and a TM220 thermal-magnetic overcurrent release. Its breaking capacity reaches 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V — covering standard industrial distribution voltages across the board.
Thermal derating and real-world fit
The 160 A rating holds steady through 50 °C ambient; above that it derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. In a warm panel — say a food-plant enclosure near ovens — that 150 A floor at 70 °C still leaves headroom for a 125 A continuous load. The TM220 release means thermal pickup is fixed; no field-adjustable trip unit, so the breaker is sized for a known load profile, not for tweaking.
Panel footprint and wiring
Depth is 70 mm, width 76.2 mm, height 130 mm. That 70 mm depth is shallow enough to clear most 200 mm-deep enclosures with room for rear cable runs. The front face carries an IP40 rating — fine for a dry indoor panel; keep it out of washdown zones unless it's behind a sealed door. Maximum power loss is 38 W, so factor that into the enclosure thermal budget if the panel is dense.
What the TM220 release means in practice
The TM220 designation indicates a fixed thermal-magnetic trip: the thermal element protects against sustained overloads, the magnetic element against short-circuit currents. No electronic adjustments, no communication module, no undervoltage release on this variant. It's a straightforward, no-frills MCCB for a fixed-load application where you don't need remote monitoring or adjustable trip curves.