Siemens 3VA1180-3EF32-0JC0 — 80 A SENTRON MCCB, Line Protection with Shunt Trip
The Siemens 3VA1180-3EF32-0JC0 is a 3-pole SENTRON molded case circuit breaker rated for 80 A continuous at 40 °C, designed for line protection in distribution panels. It delivers a 75.6 kA breaking capacity at 240 V AC, tapering to 52.5 kA at 415 V and 32 kA at 440 V — enough headroom for most industrial service-entrance and feeder applications where high fault current is a given. The 800 V rated insulation voltage covers 480 V and 600 V class systems with margin. This MCCB includes a shunt trip release and two HQ auxiliary switches, but no undervoltage release, no ground-fault monitoring, and no communication module. It is a straightforward thermal-magnetic protector — no frills, no fieldbus — sized for a standard panel footprint at 70 mm deep, 76.2 mm wide, 130 mm tall.
Current Ratings — Steady Through 50 °C
The 80 A rating holds flat from 40 °C through 50 °C. At 55 °C it derates to 78 A, at 60 °C to 77 A, at 65 °C to 75 A, and at 70 °C to 74 A. That is a shallow derate curve — only 6 A lost over a 30 °C rise — so in a warm enclosure with modest ventilation this breaker still carries near its nameplate current. The maximum power loss at full load is 19.2 W, a number to check when calculating enclosure heat rise.
Interrupting Capacity — Voltage-Dependent, Not Flat
Breaking capacity drops with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The 11.9 kA at 690 V is the floor — still adequate for most 690 V motor branch circuits, but if your available fault current at that voltage exceeds 12 kA, you need a higher-rated frame or a current-limiting upstream device. The 75.6 kA at 240 V is the headline figure; it covers high-capacity 120/240 V services common in North American panels.
Accessories and Releases — Shunt Trip Fitted
Factory-fitted with a shunt trip (STL) and two HQ auxiliary switches. No undervoltage release, no ground-fault module, no communication function. The shunt trip allows remote tripping via a control signal — useful for emergency-stop circuits or interlocking with a fire-alarm panel. The two auxiliary switches provide status feedback (open/closed) to a PLC or indication lamp. The basic switch is order code 3VA11803EF320AA0.
Environmental Range and Storage
Operating temperature spans -25 °C to 70 °C. Storage range is wider: -40 °C to 80 °C, covering cold warehouses and hot shipping containers. No trip indicator on the front face — you rely on the auxiliary switches or a visual check of the handle position.
Panel Fit — DIN Rail or Direct Mount
At 76.2 mm wide (3 in), this 3-pole MCCB occupies a standard three-module width on DIN rail or direct-mount plate. Depth of 70 mm (2.76 in) leaves clearance for rear-connected busbars and wiring gutters. Height of 130 mm (5.12 in) fits standard 200 mm tall enclosure backplates with room for cable entry above and below.