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Siemens 3VA4120-5ED14-0AA0 Molded Case Circuit Breaker

  • 20A
  • 1 Pole
  • Bolt-On
Siemens 3VA4120-5ED14-0AA0
Molded Case Circuit Breaker
Brand Siemens
SKU 3VA4120-5ED14-0AA0
Select Item Condition
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  • 20A
  • 1 Pole
  • Bolt-On

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Siemens 3VA4120-5ED14-0AA0 - 20A 1 Pole Molded Case Circuit Breaker

Siemens 3VA4120-5ED14-0AA0 - 20A 1 Pole Molded Case Circuit Breaker

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$185.00 In Stock

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Description

Designed for reliable line protection, this 1-pole, 20A molded case circuit breaker features a TM210 thermal-magnetic trip unit. It provides fixed thermal and magnetic settings to safeguard commercial electrical systems. The breaker installs into Siemens P1, P2, and P3 panelboards. It features a bolt-on mounting style and comes equipped with load-side lugs. With a medium breaking capacity, it is rated for 35 kAIC at 277VAC and 85 kAIC at 120VAC. It is also HACR, HID, and SWD rated.

Specifications

Key specifications
Brand Siemens
Part Number 3VA4120-5ED14-0AA0
Series 3VA4
Amperage 20A
Poles 1
Mounting Style Bolt-On
Voltage 120VAC, 277VAC, 347VAC
Phase 1
AIC Rating 85kA @ 120VAC, 35kA @ 277VAC, 18kA @ 347VAC
Fit and installation
Frame Type 3VA41
Terminal Type Lugs
For Use With Siemens P1, P2, P3 Panelboards, Switchboards
Wire Gauge 14-8 AWG (Cu), 12-8 AWG (Al)
Max Wire 8 AWG
Min Wire 14 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, Rotary Handle
Accessories Load Side Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval CE, CSA, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Current Limiting, Reverse Feed, HID Rated, SWD Rated

Product FAQs

8 answers
What panelboards are compatible with the Siemens 3VA4120-5ED14-0AA0?

This 1-pole breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as Siemens switchboards.

What wire sizes and materials are accepted by the lugs on this breaker?

The factory-installed load-side lugs accept 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire.

What does the "5" in the catalog number 3VA4120-5ED14-0AA0 indicate?

The "5" designates this breaker as having a Medium (Class M) breaking capacity, which provides an interrupting rating of 35 kAIC at 277V and 85 kAIC at 120V.

What type of trip unit is installed in the 3VA4120-5ED14-0AA0?

It features a TM210 thermal-magnetic trip unit with fixed long-time (thermal) and fixed instantaneous (magnetic) protection settings.

How does the 3VA4120-5ED14-0AA0 mount into the panelboard?

This breaker features a bolt-on mounting style for secure installation into compatible Siemens panelboards and switchboards.

Is the 3VA4120-5ED14-0AA0 suitable for switching lighting loads?

Yes, as a 20A breaker, it is SWD (Switching Duty) and HID (High-Intensity Discharge) rated, making it suitable for switching fluorescent and HID lighting loads on a regular basis.

Is this breaker HACR rated for HVAC applications?

Yes, the 3VA4120-5ED14-0AA0 is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.

What is the difference between the 3VA4120-5ED14-0AA0 and the 3VA4120-4ED14-0AA0?

The difference is the breaking capacity. The 3VA4120-5ED14-0AA0 has a Medium (Class M) rating of 35 kAIC at 277V, while the 3VA4120-4ED14-0AA0 has a Standard (Class S) rating of 25 kAIC at 277V.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 5 reviews
Rating
Ratings
5 reviews
  • SW
    SHELDON W.
    Verified Buyer
    Reviewing
    Siemens 3VA4160-4ED34-0AA0 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/27/26
    SuperBreakers has you covered

    SuperBreakers has you covered when you’re in a pinch and need breakers at the last minute. Their customer service is excellent, and the team consistently goes above and beyond to help. I highly recommend them!

  • RS
    Rob S.
    Verified Buyer
    Reviewing
    Siemens 3VA4150-6ED34-0AA0 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/8/26
    50 amp breaker

    Very helpful and arrived quickly.

  • JB
    Josh B.
    Verified Buyer
    Reviewing
    Siemens 3VA4130-4ED24-0AA0 - 30A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/5/26
    Breakers

    Exactly as described. Quick shipping.

  • JL
    Jeff L.
    Verified Buyer
    Reviewing
    Siemens 3VA4120-6ED14-0AA0 - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    2/11/26
    Better than new

    Great condition and fast shipping

  • KC
    Ken C.
    Verified Buyer
    Reviewing
    Siemens 3VA4150-4ED34-0AA0 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/22/25
    Breaker Order

    Good prices and fast shipping.