What this MCCB is and what it does
The Siemens 3VA1132-5ED36-0AA0 is a SENTRON-series molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries three poles and a TM210 thermal-magnetic overcurrent release — the '210' designates a fixed thermal trip at 32 A and a magnetic short-circuit pickup at 10× In, per Siemens' TM release numbering. The breaker is rated for an insulation voltage of 800 V and delivers a maximum breaking capacity of 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. That spread tells you the interrupting capability drops sharply above 440 V — at 690 V it's still 17 kA, which covers most industrial motor branch circuits but not high-fault utility feeds.
Thermal derating — what the 32 A rating actually means
The 32 A rating holds from 40 °C through 50 °C ambient. At 55 °C it derates to 31 A, and at 70 °C it's 30 A. That's a shallow derating curve — only 2 A lost over a 30 °C rise — which is typical of the SENTRON 3VA1's thermal design. If your panel ambient runs above 50 °C, plan for the 30 A ceiling at 70 °C. The breaker dissipates 10.6 W maximum at rated load, so ventilation in a sealed enclosure matters more for the surrounding components than for the breaker itself.
Physical fit and panel integration
The 3VA1132-5ED36-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON mounting plates and most DIN-rail adapters. The front face carries an IP40 protection class, meaning it's protected against tools and wires >1 mm but not against water ingress; keep it inside a rated enclosure. No undervoltage release, no voltage trigger, no communication module, and no ground-fault monitoring on this variant — it's a straight thermal-magnetic line-protection breaker with a trip indicator absent. If you need those functions, you're looking at a different suffix in the 3VA1 family.