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This Siemens 3VA5145-5EC32-0AA0 is a 3-pole molded-case circuit breaker designed for system protection. It features an operational current of 45A at 40°C, with derated values at higher temperatures.
The breaker has a rated insulation voltage of 800V and a maximum operational voltage of 500V DC. Its operating voltage at AC is rated at 690V. The breaking capacity according to IEC 60947 is 55 kA at 415V and 7 kA at 690V. Under UL 489 standards, it provides a breaking capacity of 35 kA at 480V and 18 kA at 600Y/347V.
With a mechanical service life of typically 20,000 switching cycles, the circuit breaker is built for durability. It has an electrical endurance of 8,000 cycles at AC-1 for 380/415V and 4,000 cycles at 690V. The unit has a maximum power loss of 11.4W.
The circuit breaker is designed for DIN rail mounting and has dimensions of 140mm height, 76.2mm width, and 76.5mm depth. It supports HACR and HID Type applications according to UL 489.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current is 45A at 40°C, with derated values at higher temperatures.
The rated insulation voltage is 800V, the maximum operational voltage with DC is 500V, and the rated operating voltage at AC is 690V.
The breaking capacity according to UL 489 at 480V is 35 kA.
This circuit breaker is designed for DIN rail mounting.
The typical mechanical service life is 20,000 switching cycles.