- Same Day Priority Shipping Available -
SuperClub

Siemens ED42B125L - 125A 2 Pole Molded Case Circuit Breaker

Brand Siemens
SKU ED42B125L
4.9
Rated 4.9 out of 5 stars
15 Reviews
Siemens ED42B125L 2 Pole Circuit Breaker
Free Shipping Over $99
Siemens ED42B125L 2 Pole Circuit Breaker

Siemens ED42B125L - 125A 2 Pole Molded Case Circuit Breaker

Brand Siemens
SKU ED42B125L
4.9
Rated 4.9 out of 5 stars
15 Reviews
Select Item Condition
Earn 1102 SuperPoints

Quantity
Planning a Big Order?
Bulk pricing available—let us know your needs for a quote.
Get a quote
Shop with Confidence
Enjoy a free 60-day warranty, extendable to 1 year at checkout.
Learn more
Siemens ED42B125L 2 Pole Circuit Breaker

Siemens ED42B125L - 125A 2 Pole Molded Case Circuit Breaker

New

$1102.00 In stock

Quantity

DescriptionSpecificationsSuperClubWarranties
Description
Built for standalone industrial applications, this 125A unit mount breaker delivers dependable thermal-magnetic trip functionality. The "L" suffix designates the inclusion of both line and load lugs, making it ready for installation into individual enclosures and switchboards. It provides a robust 65kAIC interrupting capacity at 240VAC and supports reverse feed configurations. This Sentron ED4 frame component ensures strict compliance with UL 489 standards for heavy-duty electrical systems.

Specifications

Brand Siemens
Series ED4
Part Number ED42B125L
Amperage 125A
Voltage 240VAC, 480VAC, 250VDC
Poles 2
Phase 1
AIC Rating 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC
Mounting Style Unit Mount
Terminal Type Lugs
For Use With Individual Enclosures, Switchboards
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Wire Gauge 3-3/0 AWG (Cu), 1-2/0 AWG (Al)
Max Wire 3/0 AWG (Cu), 2/0 AWG (Al)
Min Wire 3 AWG (Cu), 1 AWG (Al)
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release
Accessories Line & Load Lugs (TA1E6125)
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CSA, HACR, IEC, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip

SuperClub

Get rewarded every time you shop! Join SuperClub for free and start earning points on every purchase, unlocking exclusive discounts, special promos, and VIP perks. Already a member? Keep shopping to level up your rewards and enjoy even more benefits, including faster shipping, extended returns, and premium offers.

Learn more about SuperClub

Warranties

We’ve got you covered!

When shopping with SuperBreakers, you’ll have peace of mind knowing that every single item you purchase includes a 60 day warranty, free of charge. Why such confidence? Because only the highest quality electrical parts have a place on our shelves, and we stand by every single one we sell.

If anything goes wrong with your item that is not a result of misuse or normal wear and tear, we’ll gladly replace it at no cost to you.

Click here to read our full warranty details

Shipping

Free Shipping Policy

Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

Click here to read our full shipping policy
Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments

Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

4.9
Rated 4.9 out of 5 stars
Based on 15 reviews
Total 5 star reviews: 14 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Search
Search Reviews
Rating
Ratings
Write a Review (Opens in a new window)
15 reviews
  • JB
    John B.
    Verified Buyer
    Reviewing
    Siemens ED43B080 - 80A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/11/26
    Super Fast Shipping! Great Service

    I am very happy with the service I received from Super Breakers, they had what I needed in stock, and shipped out really quickly. I received my order within 2 days of placing the order!

    Was this helpful?
  • SK
    Steve K.
    Verified Buyer
    Reviewing
    Siemens ED43B020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    2/16/26
    Breaker

    Fast shipping, worked great

    Was this helpful?
  • RM
    Rick M.
    Verified Buyer
    Reviewing
    Siemens ED43B020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/5/26
    Breaker Review

    Very good equipment and was in great condition.

    Also does SuperBreakers purchase any new in box breakers?

    Was this helpful?
  • CD
    Carlos D.
    Flag of United States
    Verified Buyer
    Reviewing
    Siemens ED43B040 - 40A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/30/25
    Siemens ED43B040 3 Pole Circuit Breaker.

    I initially purchased two Siemens ED43B040 3-pole circuit breakers. One of the breakers wouldn’t engage properly, so I returned it. The return process was smooth, and a replacement breaker was delivered overnight. It’s always a pleasure doing business with Super Breaker.

    Was this helpful?
  • SS
    Steve S.
    Flag of United States
    Reviewing
    Siemens ED43B050 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    12/29/23
    The item was shipped out

    The item was shipped out very fast and was exactly what was ordered.

    Was this helpful?

Related Products

Recently Viewed