Designed to support heavy-duty commercial loads, this 20-amp Sentron series component delivers consistent long-time and instantaneous trip functions. The bolt-on mounting style ensures a solid mechanical connection within Siemens P1, P2, and P3 panelboards. Featuring a non-interchangeable trip unit and HACR certification, it meets rigorous safety standards for HVAC equipment. It achieves a robust 65kA interrupting capacity at 240VAC, making it suitable for demanding industrial environments.
Which Siemens panelboards accept the ED42B020 circuit breaker?
This ED4 frame breaker is designed for installation in Siemens P1, P2, and P3 series panelboards. It requires the appropriate panelboard mounting hardware for a secure bolt-on connection to the bus.
What wire sizes are compatible with the standard lugs on the ED42B020?
The factory-installed SA1E025 load lugs accept 14 to 10 AWG copper wire or 12 to 10 AWG aluminum wire.
Is the Siemens ED42B020 a direct replacement for older I-T-E breakers?
Yes, Siemens acquired I-T-E and maintained the Sentron product line. This breaker directly replaces legacy I-T-E ED4 frame breakers with the ED42B020 catalog number.
Can the ED42B020 be used in direct current (DC) systems?
Yes. In addition to its AC ratings, this breaker is UL listed for 250VDC applications with a 30kA interrupting capacity, making it suitable for DC control panels and distribution circuits.
Is the ED42B020 suitable for HVAC applications?
Yes, this 20-amp breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment.
Do I need a separate mounting kit to install the ED42B020?
If your Siemens P1, P2, or P3 panelboard does not already have an open provision for an ED frame breaker, you will need to purchase the appropriate twin-mount or single-mount hardware kit separately.
Can I adjust the trip settings on the ED42B020?
No, this breaker is equipped with a fixed thermal magnetic trip unit. Both the long-time and instantaneous trip functions are factory set and non-adjustable.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 20 reviews.
Siemens ED43B100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/8/26
Siemens ED43B100 breeaker
Breaker arrived even earlier than expected. In great condition and very well packaged. Customer service was helpful and resolve all questions.
KL
Kristofer L.
Verified Buyer
Reviewing
Siemens ED43B015 - 15A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/1/26
Product delivered was perfect.
This was my first order with Super Breakers so you just don't know what you will get. My products came quickly and just as described. I was very pleased with my experience and will use them in the future.
SW
Scott W.
Verified Buyer
Reviewing
Siemens ED43S100A - 100A 3 Pole Molded Case Switch
I recommend this product
Rated 5 out of 5 stars
6/10/26
Great transaction
We received the breaker we needed in great shape and in a timely manner!
We will defiantly be ordering from Super breaker again.
KK
Kurt k.
Verified Buyer
Reviewing
Siemens ED43B080 - 80A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
5/18/26
Fast shipping
I needed the breaker quickly for a job. It arrived earlier than I expected which kept the job moving along.
MS
mark s.
Verified Buyer
Reviewing
Siemens ED41B020 - 20A 1 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/16/26
Exactly what I ordered
I ordered 12 Siemens breakers. My order was exactly what I ordered, They came fast, and everything was in good shape. I will be using superbreakers in the future.