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Siemens ED42S125ALAC - 125A 2 Pole Molded Case Switch

Brand Siemens
SKU ED42S125ALAC
4.9
Rated 4.9 out of 5 stars
16 Reviews

Siemens ED42S125ALAC - 125A 2 Pole Molded Case Switch

Brand Siemens
SKU ED42S125ALAC
4.9
Rated 4.9 out of 5 stars
16 Reviews
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Siemens ED42S125ALAC - 125A 2 Pole Molded Case Switch

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$278.40 In stock

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DescriptionSpecificationsSuperClubWarranties
Description
Part of the Sentron ED-frame family, the Siemens ED42S125ALAC serves as a non-automatic disconnect switch for commercial applications. This 2-pole, bolt-on switch installs into standard enclosures and switchboards. It is superseded by the 3VA5112-4EC21-0AA0 base unit for modern upgrades. Rated for 125A at up to 480VAC, it features a self-protective instantaneous override. The unit comes equipped with load lugs, a shunt trip, and an auxiliary switch for remote tripping and status monitoring.

Specifications

Brand Siemens
Series ED4
Part Number ED42S125ALAC
Amperage 125A
Voltage 240VAC, 480VAC, 250VDC
Poles 2
Phase 1
AIC Rating 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Enclosures, Switchboards
Trip Technology Magnetic Only
Trip Adjustability Fixed
Wire Gauge 3-3/0 AWG (Cu), 1-2/0 AWG (Al)
Max Wire 3/0 AWG
Min Wire 3 AWG
Available Options Alarm Switch, Undervoltage Release
Accessories Shunt Trip (Factory Installed), Auxiliary Switch (Factory Installed), Load Side Lugs Included
Standards IEC 60947-2, NEMA AB 1, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features Non-Automatic, Disconnect, Self-Protective Instantaneous Override, Reverse Feed, HACR Rated

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4.9
Rated 4.9 out of 5 stars
Based on 16 reviews
Total 5 star reviews: 15 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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16 reviews
  • 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.

    Was this helpful?
  • 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?

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