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Siemens ED63B125 Molded Case Circuit Breaker

  • 125A
  • 3 Pole
  • Bolt-On
Siemens ED63B125
Molded Case Circuit Breaker
Brand Siemens
SKU ED63B125
Select Item Condition
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  • 125A
  • 3 Pole
  • Bolt-On

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Siemens ED63B125 - 125A 3 Pole Molded Case Circuit Breaker

Siemens ED63B125 - 125A 3 Pole Molded Case Circuit Breaker

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$839.99 In Stock

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Description

Part of the Sentron ED family, this 125A, three-pole MCCB delivers robust power distribution for commercial facilities. It features a fixed thermal-magnetic trip unit. The bolt-on design installs into Siemens P1, P2, and P3 panelboards or switchboards. It serves as a reliable legacy solution, replaceable by the 3VA5 series. Rated for 65kAIC at 240VAC and 25kAIC at 480VAC, it includes load-side lugs and reverse feed capabilities for versatile wiring.

Specifications

Key specifications
Brand Siemens
Part Number ED63B125
Series ED6
Amperage 125A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 30kA @ 250VDC
Fit and installation
Frame Type ED
Terminal Type Lugs
For Use With Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers
Wire Gauge 3 AWG - 3/0 AWG (Cu), 1 AWG - 2/0 AWG (Al)
Max Wire 3/0 AWG
Min Wire 3 AWG (Cu) / 1 AWG (Al)
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, Alarm Switch, Undervoltage Release
Accessories Load Side Lugs (TA1E6125)
Standards CSA C22.2 No. 5, HACR Rated, 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

6 answers
What panelboards are compatible with the ED63B125?

This bolt-on breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as Siemens switchboards and motor control centers.

Can this breaker be used in DC electrical systems?

Yes, it is rated for direct current applications up to 250VDC, where it provides an interrupting rating of 30kAIC.

Can I use the Siemens ED63B125 as a replacement for an ITE ED63B125?

Yes. Siemens acquired the ITE brand and continued manufacturing the ED frame. The current Siemens model is a direct physical and electrical replacement for the legacy ITE breaker of the same catalog number.

Is the ED63B125 rated for reverse feed installations?

Yes, standard Siemens ED frame thermal magnetic breakers feature fixed trip units and are approved for reverse feed or back-fed applications.

Is this circuit breaker HACR rated?

Yes, this model carries a Heating, Air Conditioning, and Refrigeration (HACR) rating, making it suitable for protecting HVAC branch circuits.

Are the trip settings adjustable on this breaker?

No, the ED63B125 features a non-interchangeable, fixed thermal and fixed magnetic trip unit. The Long-Time and Instantaneous (LI) trip functions cannot be adjusted in the field.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
1 review
  • LL
    Larry L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    8/4/25
    Circuit Breaker

    Nice circuit breaker.

    Worked good.