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This Siemens 3VA5 series molded-case circuit breaker, part number 3VA5120-5EF41-0AA0, is a 4-pole unit designed for system protection applications. It features a permanent rated current (Iu) of 20A, with operational current ratings varying slightly with temperature, from 20A at 40°C down to 18.1A at 70°C.
The breaker offers a maximum rated operational voltage of 690V AC and 600V DC, with an insulation voltage of 800V. Its breaking capacity according to IEC 60947 standards includes 85kA at 240V, 55kA at 415V, and 7kA at 690V. Under UL 489 standards, it provides a breaking capacity of 35kA at 480V and 18kA at 600Y/347V.
Adjustable parameters for short-circuit protection include an Ig minimum of 14A to 20A and an Ii range from 150A to 300A. The overcurrent release type is TM240 with an LI protection function. The breaker is HACR Type certified.
Mechanically, the unit has a height of 5.5 inches and is designed for DIN rail mounting. It has a typical mechanical service life of 15,000 switching cycles and electrical endurance ratings that vary by voltage and load type, such as 8,000 cycles at AC-1 for 380/415V and 4,000 cycles at AC-1 for 690V.
| 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 600 V DC.
The breaking capacity according to UL 489 at 480 V is 35 kA.
The permanent rated current (Iu) is 20 A.
This circuit breaker has 4 poles.
This circuit breaker uses DIN Rail mounting.
The RoHS status is RoHS3 Compliant.
The Moisture Sensitivity Level (MSL) is 1 Unlimited.