What the ratings mean for fit
The Siemens SENTRON 3VA1180-5EF36-0DH0 is a 3-pole molded case circuit breaker rated 80 A continuous (Iu) with a TM240 thermal-magnetic overcurrent release. The 80 A holds flat from 40 °C through 50 °C, then derates to 72 A at 70 °C — that thermal curve matters if this breaker lives in a hot panel or near other heat sources. Short-circuit breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. At 415 V, 121 kA covers most industrial service-entrance and large feeder applications where the available fault current is high. The 800 V rated insulation voltage (Ui) confirms it's built for 690 V line-to-line systems. This version includes an undervoltage release (UVR) and comes with 2 auxiliary switches plus 1 trip alarm switch (HQ). The auxiliary contact configuration is factory-integrated — no field add-on required. The integrated auxiliary trip order code is 3VA9608-0BB25.
Lifecycle and sourcing reality
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The IP40 front protection means it's suited for enclosed panel mounting — not outdoor or washdown duty without additional enclosure.
Panel integration and wiring
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. The 76.2 mm width is a standard 3-pole MCCB footprint — fits common panel layouts and busbar systems without re-spacing. Mechanical endurance is rated at 15,000 operations. The TM240 release is a fixed thermal-magnetic design — no interchangeable trip units. For DC network applications, refer to the 3VA device manual for switching power values.