3-pole 50 A MCCB with 75.6 kA interrupting at 240 V
The Siemens 3VA1050-3ED36-0AE0 is a SENTRON molded case circuit breaker (MCCB) rated for 50 A continuous at 40 °C ambient, with a thermal-magnetic TM210 overcurrent release. Its interrupting capacity reaches 75.6 kA at 240 VAC, 52.5 kA at 415 VAC, and 32 kA at 440 VAC — figures that determine the available fault current it can safely clear without upstream coordination failure. At 500 V and 690 V the rating drops to 7.5 kA, so verify the system voltage against the site's SCCR study before specifying. The breaker carries 3 poles, no undervoltage release, no ground-fault monitoring, and no communication function — it is a straightforward line-protection device, not a smart breaker. The supplied basic switch is order code 3VA10503ED360AA0, and the auxiliary switch block supports up to 4 HQ auxiliary switches. Rated insulation voltage is 800 V.
Thermal derating and panel fit
The 50 A rating holds flat from 40 °C through 50 °C ambient. Above that it derates: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If the breaker sits in a crowded enclosure with internal heat rise, use the 70 °C figure for worst-case sizing — that 45 A limit is the real-world continuous current the TM210 release will pass without nuisance tripping. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm high. The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint for DIN-rail or panel-mount installation. No trip indicator is fitted on this variant — fault status is read from the auxiliary switch block or the handle position.
Lifecycle and sourcing
The lifecycle stage is listed as current — meaning Siemens still manufactures and supports this order code as an active catalog item. No phase-out or last-time-buy notice is on record.