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Siemens HED43B020L Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Siemens
HED43B020L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HED43B020L
Quantity
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Siemens HED43B020L - 20A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Sentron series, the Siemens HED43B020L is a 3-pole, 20A MCCB for industrial power distribution. It features a thermal-magnetic trip unit for reliable long-time and instantaneous (LI) protection. This unit-mount breaker includes line and load lugs for feed-thru applications in Siemens enclosures and motor control centers. It is replaced by the 3VA5120-6EC31-6AA0 for newer installations. Engineered for demanding environments, it offers 42kAIC at 480V and is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HED43B020L |
| Series | HED4 |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 42kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs (SA1E025) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip, Current Limiting |
Product FAQs
8 answersWhat does the "L" suffix mean in the HED43B020L catalog number?
The "L" indicates that the breaker is factory-assembled and shipped with both line and load side lugs installed.
How does the HED4 series differ from the standard ED4 series?
Both utilize the same physical ED frame, but the HED4 is the high-interrupting version. The HED43B020L provides a 42kAIC rating at 480VAC, which is higher than the standard ED4 rating.
What are the wire gauge requirements for the HED43B020L lugs?
The factory-installed lugs accept 14-10 AWG copper (Cu) conductors or 12-10 AWG aluminum (Al) conductors.
Where can the HED43B020L circuit breaker be installed?
This unit-mount ED frame breaker is compatible with Siemens enclosures, switchboards, and motor control centers.
Is the HED43B020L suitable for direct current (DC) systems?
Yes, it is rated for use on DC systems up to 250VDC, with a maximum interrupting rating of 30kAIC.
Can I swap the trip unit on the HED43B020L to change the amperage?
No. Siemens ED frame circuit breakers feature fixed, non-interchangeable thermal-magnetic trip units. The entire breaker must be replaced to change the continuous current rating.
What protection functions are included in the HED43B020L trip unit?
The thermal-magnetic trip unit provides fixed long-time (L) protection for overloads and fixed instantaneous (I) protection for short circuits.
Is the HED43B020L HACR rated?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
Total 5 star reviews: 13 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
13 reviews
- PMPete M.Verified BuyerReviewingSiemens HED43B060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/26Good price - Best website
Awesome price on an item. easy to use website made finding the right breaker and purchasing it super easy
- BCBrad C.Verified BuyerReviewingSiemens HED43B070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/12/26Thank You
The breaker works perfectly, but I'm more impressed by the fast, prompt delivery. Will be using you again, thank you.
- MLMichael L.Verified BuyerReviewingSiemens HED43B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/15/26Siemens breaker
Return customer, always great service and quick delivery. A+++
- JMJonathan M.Verified BuyerReviewingSiemens HED43B030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/10/26Breaker
Fast Delivery, just what I ordered !!
- RFRussell F.Verified BuyerReviewingSiemens HED41B040 - 40A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/6/26Just what I ordered
Straight forward, simple process. On time delivery.