Siemens 3VA4145-5ED24-0AA0 molded case circuit breaker is rated 45A and 480VAC, with 2 poles and a 35kA interrupting rating at 480VAC. This 3VA4 series breaker in the 3VA family has a 3VA41-Frame, thermal magnetic trip, LI trip function, and fixed thermal and fixed magnetic settings. It features panelboard and switchboard mounting, a load side lug connection, standard protection and UL approval. Dimensions are 5.09 in high, 2 in wide and 2.96 in deep. Standards include WEEE, RoHS and REACh.
What current and voltage ratings should I use to select the Siemens 3VA4145-5ED24-0AA0?
This breaker is rated 45A at 480VAC. Use the 45A rating when selecting circuit overcurrent protection, and select it for an AC application within its 480VAC voltage rating.
How does the interrupting rating guide breaker selection?
The interrupting rating is 35kA at 480VAC. Compare that rating with the available fault current at the installation point; the available fault current must not exceed the breaker's interrupting rating.
When should I choose this two-pole breaker?
Choose this breaker when the circuit requires two breaker poles. Its two-pole construction determines the number of circuit paths handled by the breaker, so pole count is a separate selection requirement from current and voltage.
What protection does the thermal-magnetic LI trip provide?
LI provides long-time overload and instantaneous short-circuit protection. The thermal element responds to sustained overloads, while the magnetic element responds rapidly to high fault current.
Can I adjust the thermal or magnetic trip settings?
Both the thermal and magnetic trip settings are fixed. Choose this breaker when fixed trip characteristics meet the circuit's protection requirements rather than when field-adjustable trip settings are needed.
How are outgoing conductors connected to the breaker?
The load side uses a lug connection to secure the outgoing conductor at the terminal. Plan load-side conductor routing and termination around that lug connection.
What dimensions should I account for in the installation layout?
The breaker measures 5.09 in high, 2 in wide and 2.96 in deep. Use these dimensions when planning equipment layout, with additional space for conductor routing and termination.
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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