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Siemens HED43B050L Molded Case Circuit Breaker
- 50A
- 3 Pole
- Unit Mount
Siemens
HED43B050L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HED43B050L
Quantity
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Siemens HED43B050L - 50A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial power distribution, the Siemens HED43B050L is a 3-pole, 50A Sentron ED frame MCCB. It provides reliable thermal-magnetic protection with fixed long-time and instantaneous (LI) trip functions. This unit-mount breaker installs into standard enclosures, switchboards, and motor control centers, and includes line and load side lugs. Note that this ED frame model is replaced by the 3VA5150-6ED36-0AA0. Rated 42kAIC at 480VAC, this HACR-rated breaker handles high faults.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HED43B050L |
| Series | HED4 |
| Amperage | 50A |
| 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 | Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 AWG |
| 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, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs (LN1E100) |
| 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, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the "L" suffix in the HED43B050L part number indicate?
The "L" indicates that the circuit breaker includes factory-installed line and load side lugs (part number LN1E100) for wire termination.
Is there a newer replacement model for the Siemens HED43B050L?
Yes, Siemens is transitioning from the legacy Sentron ED frame to the newer 3VA series. The direct replacement for this 50A breaker is catalog number 3VA5150-6ED36-0AA0.
Can the HED43B050L be reverse fed?
Yes, this thermal-magnetic molded case circuit breaker is suitable for reverse feed applications.
Is this breaker rated for HVAC applications?
Yes, the HED43B050L is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment.
Will this breaker fit in a standard residential load center?
No, the HED43B050L is a unit-mount (feed-thru) molded case circuit breaker designed for commercial and industrial enclosures, switchboards, and motor control centers. It is not compatible with standard residential plug-on or bolt-on load centers.
Are the trip settings on the HED43B050L adjustable?
No, this breaker features a non-interchangeable trip unit with fixed thermal (long-time) and fixed magnetic (instantaneous) trip functions.
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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.