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This Siemens 3VA5280-7EF31-0AA0 is a 3-pole molded-case circuit breaker from the 3VA5 series, designed for system protection applications. It features a permanent rated current (Iu) of 80A, with operational current ratings varying slightly with temperature, down to 70.4A at 70°C.
The breaker operates at a maximum rated operational voltage of 690V AC and 750V DC, with an insulation voltage of 800V. It boasts a high breaking capacity, rated at 100kA at 480V according to UL 489 standards, and up to 200kA at 240V according to IEC 60947.
Key electrical protection features include overload protection with an adjustable response value (Ir) from 64A to 80A and short-circuit protection (Ii) adjustable from 5 to 10 times the rated current. The overcurrent release type is TM240 with LI protection function.
Mechanically, the unit has a typical service life of 20,000 switching cycles. Its dimensions are 185mm in height, 105mm in width, and 3.3 inches in depth. The breaker is designed for DIN rail mounting.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The maximum rated operational voltage for this circuit breaker is 690 V AC and 750 V DC.
The breaking capacity according to IEC 60947 is up to 200 kA at 240 V and 110 kA at 415 V. According to UL 489, it is 100 kA at 480 V.
The permanent rated current (Iu) is 80 A. The operational current is 80 A at 40°C, decreasing slightly at higher temperatures.
The overcurrent release offers LI protection function.
The dimensions are 185 mm in height, 105 mm in width, and 3.3 inches in depth.
The mounting type is DIN Rail.