The Siemens ED42B025 is a 2 Pole thermal magnetic molded case circuit breaker with a current rating of 25 Amps and a voltage rating of 480VAC. It has an interrupting rating of 18kAIC at 480V. The ED42B025 has a bolt-on connection type and includes long time and instantaneous trip functions.
Which panelboards are compatible with the ED42B025 circuit breaker?
This ED frame breaker is designed for bolt-on installation in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards and motor control centers.
Can the Siemens ED42B025 replace older I-T-E circuit breakers?
Yes, the ED42B025 is a direct form, fit, and functional replacement for legacy I-T-E ED4 frame breakers with the same pole and amperage configuration.
Is the ED42B025 suitable for direct current applications?
Yes, in addition to its AC ratings, this breaker carries a DC interrupting rating of 30kA at 250VDC, making it suitable for specific direct current systems.
Are the trip settings adjustable on the ED42B025?
No, this breaker features a fixed thermal-magnetic trip unit with factory-set long-time and instantaneous trip functions.
What wire sizes are accepted by the lugs on this breaker?
The standard lugs accept 14 to 10 AWG copper wire or 12 to 10 AWG aluminum wire. Always refer to the breaker label for proper torque specifications during installation.
Can the ED42B025 be reverse fed?
Yes, this thermal-magnetic molded case circuit breaker is suitable for reverse feed applications, as the trip unit is non-interchangeable and not marked for line and load restrictions.
Does this breaker mount on a standard DIN rail?
No, the ED42B025 is a bolt-on molded case circuit breaker designed for panelboard chassis mounting, not for DIN rail installation.
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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.