SENTRON 3VA1150-5ED32-0AA0 — 50 A MCCB with TM210 trip unit
The Siemens 3VA1150-5ED32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 50 A at 40 °C with no derating needed up to 50 °C per the thermal curve. At 55 °C it holds 49 A, at 60 °C it holds 48 A, and at 70 °C it holds 45 A — so the full 50 A rating is usable across typical panel ambient conditions without headroom loss. The TM210 designation on the overcurrent release means a thermal-magnetic trip with fixed settings — no interchangeable trip unit, no electronic adjustments. This is a straightforward, field-proven design for standard feeder and branch-circuit protection where you don't need the selectivity tuning of an electronic release. Breaking capacity is specified across five voltage points: 187 kA at 240 V AC, 121 kA at 415 V AC, 75.6 kA at 440 V AC, and 17 kA at both 500 V and 690 V AC. The 187 kA figure at 240 V is well above typical utility fault levels in North American 277/480 V panels when the breaker is applied on the 240 V line-to-line tap. At 690 V the 17 kA rating is the limiting case for European 400 V systems — coordination studies should use the 415 V or 440 V column depending on actual line voltage.
Integration and mounting
The 3VA1150-5ED32-0AA0 is a 3-pole MCCB with a width of 76.2 mm (3 in), depth of 70 mm (2.76 in), and height of 130 mm (5.12 in). These dimensions match the standard 3VA1110 frame footprint — so if you're replacing a 3VA1110-5ED32-0AA0 in an existing panel, the mounting holes and bus-bar spacing are identical. No rewiring or bus rework needed. Front-face protection is IP40, meaning the breaker is protected against tools and solid objects larger than 1 mm but not sealed against moisture. This is standard for panel-mounted MCCBs inside an IP54 or higher enclosure — no gasketing required on the front bezel. Maximum power dissipation is 14.6 W at rated load. In a dense panel with multiple breakers side by side, that heat adds to the enclosure's internal rise — factor it into your thermal calculation if the panel is near the 70 °C operating maximum.
Environmental and compliance
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage minimum of -40 °C covers cold warehouse conditions without special handling. Insulation voltage is rated at 800 V, and the maximum operating voltage is 690 V AC. No undervoltage release, no shunt trip, no communication function, no ground-fault monitoring, and no voltage trigger are built into this variant. It is a plain thermal-magnetic breaker — add external accessories if those functions are required.