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This Siemens 3VA5145-4ED31-0AA0 is a 3-pole molded-case circuit breaker designed for system protection. It features a permanent rated current (Iu) of 45A and a maximum rated operational voltage of 690V AC and 500V DC.
The circuit breaker has a mechanical service life of 15,000 switching cycles and electrical endurance ratings of 8,000 cycles at 380/415V and 4,000 cycles at 690V. Its breaking capacity according to UL 489 is 25kA at 480V, and according to IEC 60947, it is 36kA at 415V.
With a width of 76.2 mm and a depth of 76.5 mm, this breaker is suitable for DIN rail mounting. It is equipped with a TM210 overcurrent release with LI protection function. The adjustable response current (Ir) ranges from 32A to 45A, and the adjustable short-circuit protection current (Ii) ranges from 450A to 450A.
Key electrical specifications include an insulation voltage (Ui) of 800V and a maximum power loss of 10.2W. The operational current is rated at 45A at 40°C, with gradual reductions at higher temperatures up to 70°C.
| 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 is 690 V.
The current rating is 45A.
The breaking capacity at 240 V is 25 kA.
The mechanical service life is rated at 15,000 switching cycles.
It is approved by CCC, CE, CSA, EAC, UL489, and VDE.