Siemens 3VA4190-4ED34-0AA0 molded case circuit breaker is rated 90A with 3 poles for 3-phase operation. Rated voltages are 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC and 250VDC, with interrupting ratings of 14kAIC at 600Y/347VAC and 25kAIC at 480Y/277VAC. This SENTRON 3VA4 series breaker has a 3VA frame, standard protection and a thermal magnetic LI trip with fixed thermal and fixed magnetic settings. It features panelboard or switchboard mounting, a load side lug connection, reverse feed construction and a conductor range of 14 AWG - 3/0 AWG (Cu/Al). Approvals are CE, CSA, HACR and UL. Dimensions are 5.5 in high, 3.0 in wide and 3.7 in deep.
How should I use the 90A rating when selecting the Siemens 3VA4190-4ED34-0AA0?
The 90A rated current is a selection point for coordinating circuit protection with the load and conductor ampacity. This is a 3-pole breaker for 3-phase circuits, so account for both current requirements and circuit configuration.
Which system voltages can this breaker be selected for?
The rated voltages are 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC and 250VDC. Match the rating to the system voltage and configuration; the Y ratings refer to wye systems with the indicated line-to-line and line-to-neutral voltages.
How do I check whether the interrupting rating is adequate?
The interrupting ratings are 25kAIC at 480Y/277VAC and 14kAIC at 600Y/347VAC. Compare the rating at the applicable system voltage with the available fault current at the installation point; the interrupting rating must be sufficient for that current.
Can I adjust the overload or instantaneous trip settings?
No. The thermal and magnetic trip settings are fixed. The thermal-magnetic LI function provides long-time overload and instantaneous short-circuit protection, so select this breaker when fixed settings meet the circuit's protection requirements.
What conductors can I terminate at the load-side lug?
The conductor range is 14 AWG - 3/0 AWG for copper or aluminum, with a load-side lug connection. Select a conductor within that termination range and size it for the circuit's ampacity requirements; terminal acceptance alone does not determine conductor ampacity.
Can this breaker be reverse-fed?
Yes. The reverse-feed feature permits the source connection at either end of the breaker. This allows the feed direction to follow the installation's electrical layout.
What does the HACR rating mean for HVAC circuit selection?
The HACR rating applies to heating, air-conditioning and refrigeration applications. Use it when the equipment or project requires a HACR-rated breaker, while also matching the circuit's current, voltage and interrupting requirements.
What dimensions should I use when planning the installation layout?
The breaker is 5.5 in high, 3.0 in wide and 3.7 in deep. Use these dimensions to plan mounting space and conductor routing.
What operating temperature range should I consider?
The operating temperature range is -25C to 70C. Check the temperature at the breaker location when selecting it for the installation environment.
Which breaker standards should I use when reviewing project requirements?
The breaker standards are UL 489, CSA C22.2 No. 5 and IEC 60947-2. Compare these with the project's required circuit breaker standards during product selection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 5 reviews.
Siemens 3VA4160-4ED34-0AA0 - 60A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/27/26
SuperBreakers has you covered
SuperBreakers has you covered when you’re in a pinch and need breakers at the last minute. Their customer service is excellent, and the team consistently goes above and beyond to help. I highly recommend them!
RS
Rob S.
Verified Buyer
Reviewing
Siemens 3VA4150-6ED34-0AA0 - 50A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/8/26
50 amp breaker
Very helpful and arrived quickly.
JB
Josh B.
Verified Buyer
Reviewing
Siemens 3VA4130-4ED24-0AA0 - 30A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/5/26
Breakers
Exactly as described. Quick shipping.
JL
Jeff L.
Verified Buyer
Reviewing
Siemens 3VA4120-6ED14-0AA0 - 20A 1 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
2/11/26
Better than new
Great condition and fast shipping
KC
Ken C.
Verified Buyer
Reviewing
Siemens 3VA4150-4ED34-0AA0 - 50A 3 Pole Molded Case Circuit Breaker