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The Siemens 3VA5120-5EF36-0AA0 is a 3-pole molded-case circuit breaker designed for system protection. It features a 20A operational current rating and a rated operating voltage of 690V AC.
This circuit breaker boasts a high breaking capacity, with 35kA at 480V according to UL 489 standards and 85kA at 240V according to IEC 60947 standards. It utilizes a TM240 thermal magnetic trip unit with adjustable overload protection (Ir) from 16A to 20A and adjustable short-circuit protection (Ii) from 7.5 to 15 times the rated current.
Designed for reliability, it has a mechanical service life of 20,000 switching cycles and electrical endurance ratings of up to 8,000 cycles at 380/415V. The breaker is suitable for HACR, HID, and SWD type applications. It is mounted via DIN rail and has aluminum lug connections on both line and load sides.
Key specifications include an insulation voltage of 800V, a maximum DC operational voltage of 500V, and a maximum power loss of 12.2W. The enclosure type is IP40, and it operates within a temperature range of -25 to 70°C. The dimensions are 3 inches wide, 3 inches deep, and 5.5 inches high.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current rating is 20A at 40°C, with derating at higher temperatures.
The rated operating voltage at AC is 690V, and the maximum rated operational voltage with DC is 500V.
The breaking capacity according to UL 489 is 35kA at 480V, and according to IEC 60947 it is 85kA at 240V.
It uses a TM240 thermal magnetic trip unit with adjustable overload and short-circuit protection.
The mounting type is DIN Rail.
The dimensions are 3 inches wide by 3 inches deep by 5.5 inches high.