Siemens 3VA1180-4EF36-0HH0 — 80 A SENTRON MCCB with TM240 Release
The Siemens 3VA1180-4EF36-0HH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection at 80 A continuous current (Iu). It carries a TM240 thermal-magnetic overcurrent release — the '240' indicates the fixed thermal trip threshold at 80 A (3 × 80 A = 240 A magnetic pickup, typical for this release family). The interrupting ratings are substantial: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V, meaning it can clear high-fault currents on 480 V or 600 V class distribution without cascading upstream breakers. This MCCB includes a shunt trip (STL) auxiliary release for remote tripping, plus 2 auxiliary switches and 1 trip alarm switch (HQ configuration). The front face is IP40 rated — suitable for enclosed panel mounting where tools are required to access live parts. No undervoltage release, no ground-fault monitoring, and no communication function are fitted; this is a straightforward line-protection device for fixed-distribution panels.
Thermal Derating and Panel Integration
The 80 A rating holds flat from 40 °C through 50 °C ambient. Above that, derating begins: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. In a sealed, uncooled enclosure running at 60 °C, plan for 75 A continuous load maximum. The operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint for DIN-rail or screw-mount panel integration. The depth of 70 mm means it fits shallow enclosures where 100 mm+ breakers would conflict with gland plates or rear wiring ducts.
Auxiliary Trip and Accessory Integration
The integrated auxiliary trip module carries order code 3VA9688-0BL30 — this is the shunt trip coil assembly factory-fitted to this variant. The MCCB also includes a voltage trip trigger function, allowing remote opening via an external signal. Mechanical endurance is rated at 15,000 operations. Rated insulation voltage (Ui) is 800 V, confirming suitability for 480/277 V and 600/347 V distribution systems. For DC network applications, Siemens directs to the 3VA molded case circuit breaker device manual for switching power values.