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Siemens 3VA5125-6EC31-1AA0 Molded Case Circuit Breaker

  • 25A
  • 3 Pole
  • Panel Mount
Siemens 3VA5125-6EC31-1AA0
Molded Case Circuit Breaker
Brand Siemens
SKU 3VA5125-6EC31-1AA0
Select Item Condition
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  • 25A
  • 3 Pole
  • Panel Mount

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Siemens 3VA5125-6EC31-1AA0 - 25A 3 Pole Molded Case Circuit Breaker

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$725.00 In Stock

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Description SpecificationsProduct FAQs SuperClub Warranties Shipping Reviews 4.8 (9)

Description

Specialized for marine and high-temperature applications, the Siemens 3VA5125-6EC31-1AA0 is a 3-pole, 25A molded case circuit breaker. It carries a UL 489 SB Naval rating and is calibrated for 50°C ambient environments. Designed for panel mount installations, it integrates seamlessly into Siemens P1, P2, and P3 panelboards or motor control centers. It is an ideal upgrade for older HED43B025 and HHED63B025 models. This breaker delivers 65kAIC at 480VAC via a TM230 adjustable magnetic trip unit.

Specifications

Key specifications
Brand Siemens
Series 3VA5
Amperage 25A
Poles 3
Mounting Style Panel Mount
Voltage 240VAC, 480VAC, 600Y/347VAC, 500VDC
Phase 3
AIC Rating 150kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 100kA @ 500VDC
Fit and installation
Frame Type 3VA5
Terminal Type Lugs
For Use With Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Motor Operator, Padlock Attachment, DIN Rail Adapter, Busbar System
Accessories 50°C Calibration, Naval Rating (UL 489 SB)
Standards IEC 60947-2, UL 489, UL 489 SB
Approval ABS, CCC, CE, CSA, EAC, RCM, UL, UL 489 SB, VDE
Temp Rating 50C
Construction Features HACR Rated, Current Limiting, Reverse Feed, Naval Rated, 50C Ambient Calibration

Product FAQs

5 answers
Which Siemens panelboards accept the 3VA5125-6EC31-1AA0 breaker?

This molded case circuit breaker installs into Siemens P1, P2, and P3 panelboards, along with compatible switchboards and motor control centers. You will need the correct mounting strap kit or hardware specific to your panel type for a secure installation.

Is the 3VA5125-6EC31-1AA0 rated for direct current (DC) systems?

Yes, in addition to its standard AC ratings, this breaker is fully rated for DC applications. It provides a 100kA interrupting capacity at 500VDC, making it highly versatile for industrial control panels and specialized DC power systems.

How does the trip unit on this 25A breaker operate?

It utilizes a thermal-magnetic mechanism with Fixed Thermal and Adjustable Magnetic (LI) settings. The fixed thermal element provides reliable long-time overload protection, while the adjustable magnetic dial allows you to customize the instantaneous short-circuit trip point to match your specific load requirements.

Does the 3VA5125-6EC31-1AA0 share dimensions with other breakers in the 3VA5 family?

Yes, this 25A breaker is built on the standard 125A 3VA5 frame. All breakers within the 3VA51 series share the exact same physical footprint, allowing panel builders to standardize their mounting layouts and hardware across different amperage requirements.

Why is the adjustable magnetic trip important for panel coordination?

Adjusting the instantaneous magnetic trip threshold allows electricians to properly coordinate this breaker with downstream and upstream devices. Selective coordination ensures that only the breaker closest to a fault trips, isolating the hazard without shutting down the entire electrical system.

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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.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 9 reviews
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9 reviews
  • MR
    Mark R.
    Verified Buyer
    Reviewing
    Siemens 3VA5290-5EC31-0AA0 - 90A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/6/26
    Breaker from SuperBreakers

    SuperBreakers had what I needed and got it to me very Fast.

    Was this helpful?
  • EA
    Edward A.
    Verified Buyer
    Reviewing
    Siemens 3VA5112-5EC31-0AA0 - 125A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/11/26
    Quick Shipping

    Instock and quick free shipping over a $100

    Was this helpful?
  • JF
    Justin F.
    Verified Buyer
    Reviewing
    Siemens 3VA5450-5EC31-0AA0 - 500A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/2/26
    SIEMENS BREAKER WAS SENT NEXT DAY...

    ORDER CAME WHEN IT WAS PROMISSED AND WAS CORRECT... HAPPY CUSTOMER.

    THANK YOU,

    JUSTIN

    Was this helpful?
  • GM
    Gary M.
    Verified Buyer
    Reviewing
    Siemens 3VA5112-4EC31-0AA0 - 125A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    6/19/26
    Hard to find Siemens breaker

    Great product at a fair price

    Was this helpful?
  • RJ
    Rene J.
    Verified Buyer
    Reviewing
    Siemens 3VA5212-6EF31-0AA0 - 125A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    4/13/26
    Siemens 3VA5212-6EF31-0AA0 

    Item arrived quickly and in perfect condition

    Was this helpful?