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Siemens ED42B090L Molded Case Circuit Breaker

  • 90A
  • 2 Pole
  • Unit Mount
Siemens ED42B090L
Molded Case Circuit Breaker
Brand Siemens
SKU ED42B090L
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  • 90A
  • 2 Pole
  • Unit Mount

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Siemens ED42B090L 2 Pole Circuit Breaker

Siemens ED42B090L - 90A 2 Pole Molded Case Circuit Breaker

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$609.00 In Stock

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Description

Engineered for commercial applications, the Siemens ED42B090L provides robust overcurrent protection. This 2-pole, 90A MCCB is part of the Sentron ED frame family. The unit mount configuration installs into Siemens P1 through P5 panelboards and switchboards. It includes factory-installed line and load lugs, accepting 10-1/0 AWG wire. Rated for 65kAIC at 240V and 18kAIC at 480V, it features fixed thermal magnetic trip technology. The breaker is HACR rated and reverse feed capable.

Specifications

Key specifications
Brand Siemens
Part Number ED42B090L
Series ED4
Amperage 90A
Poles 2
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 250VDC
Phase 1
AIC Rating 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC
Fit and installation
Frame Type ED
Terminal Type Lugs
For Use With Siemens P1, P2, P3, P4, P5 Panelboards, Switchboards
Wire Gauge 10-1/0 AWG (Cu/Al)
Max Wire 1/0 AWG
Min Wire 10 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle
Accessories Line & Load Lugs (LN1E100)
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CSA, IEC, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip

Product FAQs

7 answers
What is the difference between the ED42B090 and the ED42B090L?

The ED42B090L includes factory-installed line and load lugs (lug kit LN1E100) for unit mount, feed-thru applications. The standard ED42B090 is typically configured for panelboard mounting.

What wire sizes are accepted by the factory-installed lugs on this breaker?

The included LN1E100 line and load lugs accept 10 AWG to 1/0 AWG copper or aluminum wire.

Is the Siemens ED42B090L HACR rated?

Yes, this breaker is HACR rated for use with heating, air conditioning, and refrigeration equipment.

Can the ED42B090L be reverse fed?

Yes, this breaker is reverse feed capable, allowing it to be wired with the line connections on either the top or bottom terminals.

Is the trip unit on the ED42B090L adjustable?

No, this breaker features a fixed thermal and fixed magnetic trip unit. It is non-interchangeable and cannot be adjusted in the field.

Can this breaker replace older I-T-E ED4 frame breakers?

Yes, Siemens Sentron ED4 frame breakers are direct replacements for legacy I-T-E ED4 frame breakers with matching specifications.

What panelboards are compatible with the ED42B090L?

This unit mount breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards and switchboards that accommodate feed-thru configurations.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 20 reviews
Rating
Ratings
20 reviews
  • GG
    Gerson G.
    Verified Buyer
    Reviewing
    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.