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This Siemens 3VA5 molded-case circuit breaker, part number 3VA5145-6EC31-1AA0, is engineered for system protection applications. It features a 3-pole configuration and a rated operational current of 45A, with a maximum frame size current of 125A. The circuit breaker offers a significant breaking capacity of 65kA at 480V and 65kA at 480V, with other ratings available at different voltages.
The overcurrent release is of type TM230 with LI protection function. It supports a wide adjustable short-circuit protection range from 225A to 450A. The mechanical service life is rated for a typical 15,000 switching cycles, with electrical endurance varying based on voltage and load conditions.
Designed for convenient installation, this breaker utilizes DIN rail mounting. It has a compact mechanical design with dimensions of 140mm height, 76.2mm width, and 76.5mm depth. The front features an IP40 protection class rating. The operating temperature range is from -25°C to 70°C, with specific operational current derating at higher temperatures.
Additional features include an optional motor drive accessory and a UL file designation of HEAM. It is suitable for HACR Type applications. The breaker operates without ground-fault monitoring and does not have communication or other measurement functions.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The rated operational current is 45A at 40°C, decreasing to 42.2A at 70°C.
The breaking capacity current at 480V is 65 kA.
This circuit breaker has 3 poles.
It uses the TM230 overcurrent release with LI protection function.
The mounting type is DIN Rail.
The minimum operating ambient temperature is -25 °C.