Built for heavy-duty power distribution, the Siemens 3VA4120-6ED34-0AA0 is a 20A, 3-pole molded case circuit breaker. It provides dependable long-time and instantaneous protection for commercial facilities. Designed for panel-mount installations, this breaker fits into Siemens P1 through P5 panelboards. Facility managers can use it to replace older HHED63B020 units, maintaining system continuity. Equipped with a TM210 trip unit, it delivers a Class H 65kA rating at 480VAC and is HACR rated.
HACR Rated, HID Rated, IEC 60947-2, SWD Rated, UL 489
Approval
CE, CSA, EAC, NOM, RCM, UL, VDE
Temp Rating
-25C to 70C
Product FAQs
8 answers
Which panelboards are compatible with the Siemens 3VA4120-6ED34-0AA0?
This breaker is designed for panel-mount configurations and fits directly into Siemens P1, P2, P3, P4, and P5 series panelboards, as well as compatible Siemens switchboards.
Can I use this breaker to replace an older HHED63B020?
Yes, the 3VA4120-6ED34-0AA0 serves as a direct modern replacement for the legacy Siemens HHED63B020 20A circuit breaker, maintaining system continuity and the same 65kA interrupting rating at 480VAC.
What does the Class H designation indicate on this 3VA4 breaker?
The Class H rating signifies the interrupting capacity tier for this specific frame, confirming it delivers a heavy-duty 65kA short-circuit current rating at 480VAC.
Are the trip settings adjustable on the TM210 trip unit?
No, the TM210 trip unit features fixed thermal and fixed magnetic settings. Neither the overload nor the short-circuit pickup levels can be field-adjusted.
What type of fault protection does the LI trip function provide?
The LI designation means the thermal-magnetic trip unit provides Long-Time protection to prevent damage from sustained overloads, and Instantaneous protection to immediately clear severe short circuits.
Is the 3VA4120-6ED34-0AA0 suitable for commercial HVAC equipment?
Yes, this breaker carries an HACR rating, making it fully approved by safety standards for protecting heating, air conditioning, and refrigeration motor loads.
Can this 3-pole breaker be used in DC power circuits?
Yes, it is rated for DC applications up to 250VDC, offering a 100kA interrupting rating for direct current systems.
What wire gauges and materials are accepted by the factory lugs?
The integrated clamp-style terminals accept both aluminum and copper conductors, accommodating wire sizes ranging from 14 AWG to 8 AWG.
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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