Siemens ED43B050L Molded Case Circuit Breaker
- 50A
- 3 Pole
- Panel Mount
Quantity
Siemens ED43B050L - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Siemens ED43B050L molded case circuit breaker is rated 50A and 480VAC with 3 poles and 3-phase operation. UL 489 interrupting ratings are 65kA at 240VAC and 18kA at 480VAC. This SENTRON ED4 series breaker has an ED-Frame, panel mounting, standard protection and a thermal magnetic trip with fixed thermal and fixed magnetic settings and LI trip function. Line and load side lug connections accept 10-1/0 AWG conductors. It measures 6.35 in high, 3 in wide and 3.92 in deep. Operating temperature is 40 °C, and approvals are UL and IEC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | ED43B050L |
| Series | ED4 |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| Wire Gauge | 10-1/0 AWG |
| 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 | Alarm Switch, Auxiliary Switch, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
7 answersWhat load rating should I use when selecting the Siemens ED43B050L?
Its rated current is 50A. Use that rating when evaluating circuit load, conductor protection and applicable continuous-load requirements, rather than treating it as an exact instantaneous trip threshold.
What voltage rating should I use for circuit selection?
The breaker is rated 480VAC. Select it for an AC circuit within that voltage rating, and check the interrupting rating at the circuit voltage separately.
How do I check whether its interrupting rating is sufficient?
The UL 489 interrupting ratings are 65kA at 240VAC and 18kA at 480VAC. Compare the applicable rating with the available fault current at the installation point; the available fault current must not exceed that rating.
Is this a breaker for a three-phase circuit?
Yes, it is a 3-pole breaker for 3-phase applications. The pole count supports protection of the three phase conductors, so use it when the circuit calls for three-pole protection.
Can I adjust the overload or short-circuit trip settings?
No. The thermal and magnetic trip settings are fixed. Its thermal-magnetic LI trip function provides long-time overload protection and instantaneous short-circuit protection, so select it where fixed trip characteristics suit the protection plan.
How are conductors connected, and what wire sizes do the terminals accept?
Line-side and load-side connections use lugs, with a conductor range of 10-1/0 AWG. Keep terminal conductor sizes within that range, and select conductor ampacity separately for the circuit requirements.
What dimensions should I use for the breaker layout?
The breaker measures 6.35 in high, 3.00 in wide and 3.92 in deep. Use these overall dimensions to lay out its mounting location.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 20 reviews.
- GGGerson G.Verified BuyerReviewingSiemens ED43B100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Siemens ED43B100 breeaker
Breaker arrived even earlier than expected. In great condition and very well packaged. Customer service was helpful and resolve all questions.
- KLKristofer L.Verified BuyerReviewingSiemens ED43B015 - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/1/26Product delivered was perfect.
This was my first order with Super Breakers so you just don't know what you will get. My products came quickly and just as described. I was very pleased with my experience and will use them in the future.
- SWScott W.Verified BuyerReviewingSiemens ED43S100A - 100A 3 Pole Molded Case SwitchI recommend this productRated 5 out of 5 stars6/10/26Great transaction
We received the breaker we needed in great shape and in a timely manner!
We will defiantly be ordering from Super breaker again.
- KKKurt k.Verified BuyerReviewingSiemens ED43B080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/18/26Fast shipping
I needed the breaker quickly for a job. It arrived earlier than I expected which kept the job moving along.
- MSmark s.Verified BuyerReviewingSiemens ED41B020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/16/26Exactly what I ordered
I ordered 12 Siemens breakers. My order was exactly what I ordered, They came fast, and everything was in good shape. I will be using superbreakers in the future.