What this 3VA MCCB is and what it does
The Siemens 3VA1180-4ED16-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It is a 1-pole unit rated 80 A at 40 °C, with a TM210 thermal-magnetic overcurrent release that provides both overload and short-circuit protection in a single compact package. Its interrupting capacity is 75.6 kA at 240 V AC and 9 kA at 415 V AC, which means it can safely clear a fault up to those levels without catastrophic failure — critical for panel coordination studies where the available fault current is known. The rated insulation voltage is 500 V, so the breaker is suitable for 480 V systems common in North American commercial and light industrial panels. The front face carries an IP40 protection rating, meaning tools or fingers won't accidentally contact live parts, but the breaker is not sealed against water ingress — standard for indoor panel mounting.
Thermal derating and real-world current handling
The 80 A rating holds flat from 40 °C to 50 °C. Above that, derating is gradual: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If your panel ambient runs hot — say, near a transformer or in a non-conditioned enclosure — this derating curve tells you exactly how much continuous current the breaker can carry without nuisance tripping. No guesswork. Maximum power loss is 6.4 W, which is negligible for thermal budgeting in a standard enclosure. The operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Physical fit and mounting
This 1-pole breaker occupies a single 25.4 mm (1 inch) module width on the DIN rail. Overall dimensions are 130 mm height, 25.4 mm width, and 70 mm depth. That 70 mm depth is the key fit dimension for shallow enclosures or when back-panel clearance is tight — it dictates the minimum enclosure depth you need for the breaker plus wiring space behind it. No undervoltage release, no shunt trip, no auxiliary contacts, and no communication function are built in. This is a bare thermal-magnetic breaker for basic line protection. If you need remote tripping or status feedback, you will need the accessory modules from the 3VA family.
Lifecycle and sourcing posture
For BOM-line sourcing, this part is quoted and supplied to order against an RFQ. Availability and current pricing are confirmed at quote time through our independent distribution network. No minimum-buy or long lead-time constraints are associated with this order code.