What this MCCB is and what the ratings mean for your panel
The Siemens 3VM1116-5EE32-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection — the primary feeder or main distribution breaker role in a 3-phase panel. The TM220 overcurrent release combines a thermal fixed element for overloads with a magnetic short-circuit trip; no electronic adjustment, no communication module, no ground-fault monitoring. That makes it a straight swap-in for a fixed-trip main breaker where you don't need curve tuning or remote signaling. Rated 160 A continuous at 40 °C, it holds that full rating through 50 °C before starting a gradual derating curve — 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. In a hot enclosure (say, a non-ventilated panel near a furnace line) you lose only 10 A at the top of the operating range, so the thermal margin is solid for most industrial floors. Short-circuit breaking capacity is what drives the coordination study. At 240 V it clears 187 kA; at 415 V it's still 121 kA; at 440 V it drops to 76 kA; at 500 V it holds 17 kA. If your service entrance is a 480 V delta or 400 V wye with a transformer upstream that can deliver over 100 kA fault current, this breaker covers it without cascading to a current-limiting fuse. Three-pole, front IP40 rated — fine for a closed panel but not for washdown areas. No undervoltage release, no voltage trip, no ground-fault module, no communication function. It's a basic, high-capacity main breaker: wire it, torque it, forget it.
Physical fit and panel integration
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. That 3-inch width is standard for a 3-pole MCCB in a Siemens SENTRON footprint — mounts on a DIN rail or bolts directly into a panel bus. The 70 mm depth means it fits enclosures with shallow back-pan clearance (typical 4-inch gutters clear it easily). No IP65 or higher rating on the body; keep it inside a sealed cabinet if the environment is wet or dusty.