Siemens 3VA1132-4ED22-0AA0 — 2-Pole MCCB for Line Protection
The Siemens 3VA1132-4ED22-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a 32 A rated current at 40 °C through 50 °C, with a slight derating to 30 A at 70 °C — the thermal curve is flat across the typical panel ambient range, so no mid-range adjustment is needed. Breaking capacity hits 121 kA at 240 V AC and 75.6 kA at 415 V AC, giving solid headroom for high-fault installations. The TM210 thermal-magnetic trip unit handles overload and short-circuit protection without external control wiring — a clean drop-in for retrofit or new build.
Key Ratings and What They Mean for Fit
Two-pole configuration (2P) suits single-phase line feeds or two-wire branch circuits. Rated insulation voltage is 500 V, with operating voltage at 415 V AC and 250 V DC — the DC rating is worth noting if the breaker lands in a battery or rectifier circuit. IP40 on the front means the breaker face is protected against tools and small wires (1 mm+), but the enclosure itself must be in a dry indoor panel. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward thermal-magnetic breaker, not a smart unit. Maximum power loss is 7.06 W — negligible for panel thermal budgeting, but worth summing if the enclosure holds dozens of these in a sealed cabinet.
Mounting and Panel Fit
Dimensions are 130 mm height, 50.8 mm width, 70 mm depth — a standard 2-pole MCCB footprint that fits SENTRON 3VA1 distribution blocks and most DIN-rail or screw-mount panel layouts. Width at exactly 2 inches matches the common 50.8 mm busbar pitch. Storage range spans -40 °C to 80 °C, so it handles warehouse or truck transit without issue. Operating range is -25 °C to 70 °C — fine for most indoor industrial environments.