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Siemens 3VA5112-6ED21-0AA0 Molded Case Circuit Breaker

  • 125A
  • 2 Pole
  • Panel Mount
Siemens 3VA5112-6ED21-0AA0
Molded Case Circuit Breaker
Brand Siemens
SKU 3VA5112-6ED21-0AA0
Select Item Condition
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  • 125A
  • 2 Pole
  • Panel Mount

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Siemens 3VA5112-6ED21-0AA0 - 125A 2 Pole Molded Case Circuit Breaker

Siemens 3VA5112-6ED21-0AA0 - 125A 2 Pole Molded Case Circuit Breaker

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$1,070.10 In Stock

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Description

Engineered for reliable power distribution, this 2-pole, 125A molded case circuit breaker provides essential overload and short-circuit protection. It utilizes a TM210 fixed thermal-magnetic trip unit and is rated for 65kA at 480VAC, meeting Class H breaking capacity standards. This unit mounts into Siemens 3VA panelboards, switchboards, and motor control centers. It also functions as a drop-in replacement for discontinued HED42B125 breakers, ensuring continued safety and compliance.

Specifications

Key specifications
Brand Siemens
Part Number 3VA5112-6ED21-0AA0
Series 3VA5
Amperage 125A
Poles 2
Mounting Style Panel Mount
Voltage 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC
Phase 1
AIC Rating 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC
Fit and installation
Terminal Type Lugs
For Use With Siemens 3VA 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, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Lugs, DIN Rail Adapter, Handle Lock
Accessories None (Nut Keeper Only)
Standards IEC 60947-2, UL 489, CSA C22.2 No. 5
Approval ABS, CE, CSA, EAC, IEC, UL, VDE
Temp Rating -25C to 70C
Construction Features HACR Rated, Current Limiting, Reverse Feed

Product FAQs

7 answers
Does the 3VA5112-6ED21-0AA0 come with lugs installed?

No, this specific catalog number is shipped without lugs. Lugs or other connection technologies must be ordered separately for field installation.

Can this circuit breaker be reverse fed?

Yes, all Siemens 3VA51 thermal-magnetic trip circuit breakers are UL listed for reverse feed applications.

What frame size is the 3VA5112-6ED21-0AA0?

This breaker is built on the Siemens 3VA51 frame, which supports a maximum continuous current of 125 amps.

What type of trip unit does this breaker use?

It is equipped with a TM210 thermal-magnetic trip unit, providing fixed long-time and fixed instantaneous (LI) protection.

Are the trip settings adjustable on the 3VA5112-6ED21-0AA0?

No, the TM210 trip unit features fixed thermal and fixed magnetic trip settings.

Is this breaker suitable for direct current (DC) systems?

Yes, Siemens 3VA5 thermal-magnetic breakers can be applied to DC systems. Two-pole models are typically used for 250V DC applications by placing one pole on each leg of the supply circuit.

What equipment is this breaker designed to fit?

It is compatible with Siemens 3VA panelboards, switchboards, and motor control centers.

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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 8 reviews
Rating
Ratings
8 reviews
  • 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

  • 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

  • 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

  • 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

  • DT
    DENNIS T.
    Verified Buyer
    Reviewing
    Siemens 3VA5220-6ED31-0AA0 - 200A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/15/26
    Breaker Purchase

    Great price and fast shipment