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Siemens 3VA5445-6EF31-0AA0 Molded Case Circuit Breaker

  • 450A
  • 3 Pole
  • Panel Mount
Siemens 3VA5445-6EF31-0AA0
Molded Case Circuit Breaker
Brand Siemens
SKU 3VA5445-6EF31-0AA0
Select Item Condition
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  • 450A
  • 3 Pole
  • Panel Mount

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Siemens 3VA5445-6EF31-0AA0 - 450A 3 Pole Molded Case Circuit Breaker

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$4,503.05 In Stock

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Description SpecificationsProduct FAQs SuperClub Warranties Shipping Reviews 4.8 (8)

Description

Engineered for industrial power distribution, the Siemens 3VA5445-6EF31-0AA0 is a 450A, 3-pole molded case circuit breaker. It provides reliable long-time and instantaneous (LI) protection for heavy-duty systems. This unit mounts into Siemens 3VA panelboards. It also serves as an upgrade path for discontinued HLXD63B450 breakers when paired with a retrofit kit. Rated 65 kAIC at 480VAC, it features a TM240 ATAM trip unit with adjustable thermal and magnetic settings, plus a HACR rating.

Specifications

Key specifications
Brand Siemens
Series 3VA5
Amperage 450A
Poles 3
Mounting Style Panel Mount
Voltage 600VAC, 500VDC
Phase 3
AIC Rating 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC
Electrical ratings
Amperage Range 315-450A
Fit and installation
Frame Type 3VA54
Terminal Type Lugs
For Use With Siemens 3VA Panelboards, Switchboards
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Adjustable Thermal, Adjustable Magnetic
Standards and features
Available Options Auxiliary Switch, Alarm Switch, Shunt Trip, Undervoltage Release, Motor Operator, Rotary Handle, Padlock Attachment
Accessories Lugs Not Included
Standards IEC 60947-2, UL 489
Approval CE, CSA, UL, VDE
Temp Rating -25C to 70C
Construction Features Reverse Feed, HACR Rated

Product FAQs

5 answers
Which panelboards are compatible with the Siemens 3VA5445-6EF31-0AA0?

This breaker is designed for installation in Siemens 3VA panelboards and switchboards.

Can the 3VA5445-6EF31-0AA0 replace older Siemens breakers?

Yes, it serves as an upgrade path for discontinued HLXD63B450 circuit breakers when paired with the appropriate Siemens retrofit kit.

Does the 3VA5445-6EF31-0AA0 carry a HACR rating?

Yes, this breaker is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration equipment circuits.

What type of trip unit is equipped on the 3VA5445-6EF31-0AA0?

It features a TM240 ATAM trip unit, allowing installers to adjust both the thermal overload and magnetic short-circuit protection settings.

What breaking capacity class does the 3VA5445-6EF31-0AA0 fall under?

It is a Class H high breaking capacity breaker, designed for heavy industrial power distribution systems requiring robust fault protection.

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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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International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

Reviews

4.8
Rated 4.8 out of 5 stars
Based on 8 reviews
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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

    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?
  • 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

    Was this helpful?