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Siemens ED42B040 Molded Case Circuit Breaker
- 40A
- 2 Pole
- Bolt-On
Siemens
ED42B040
Molded Case Circuit Breaker
Brand
Siemens
SKU
ED42B040
Quantity
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Siemens ED42B040 - 40A 2 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens ED42B040 - 40A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | ED42B040 |
| Series | ED4 |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 |
Quantity
Siemens ED42B040 - 40A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | ED42B040-R |
| Series | ED4 |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 |
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Description
Built for commercial and industrial applications, the Siemens ED42B040 is a 2-pole, 40A molded case circuit breaker. It utilizes a thermal magnetic trip unit to deliver reliable long-time and instantaneous (LI) overcurrent protection. This bolt-on MCCB mounts into Siemens Sentron panelboards and SB switchboards. It is configured with load-side lugs only, accepting 10-1/0 AWG copper or aluminum wire for secure terminations.Specifications
| Brand | Siemens |
|---|---|
| Part Number | ED42B040 |
| Series | ED4 |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 panelboards are compatible with the Siemens ED42B040?
The ED42B040 is an ED frame breaker designed for use in Siemens Sentron panelboards and switchboards. It is commonly installed in Siemens P1, P2, P3, P4, and P5 series panelboards, as well as older I-T-E distribution panels that accept ED frame molded case circuit breakers.
Can the ED42B040 be used in DC electrical systems?
Yes, this thermal-magnetic breaker is rated for direct current applications. It has an interrupting rating of 30kA at 250VDC. When applied on a 250VDC system, it is typically wired with one pole on each leg of the supply circuit.
Can the Siemens ED42B040 be reverse fed?
Yes, standard Siemens ED frame thermal-magnetic circuit breakers with non-removable trip units, like the ED42B040, are suitable for reverse feed applications per UL 489 guidelines.
What is the difference between the Siemens ED4 and ED6 series breakers?
The primary difference is their interrupting capacity at 480VAC. The ED4 series, including the ED42B040, is rated at 18kAIC at 480VAC. The ED6 series is a higher-rated version, offering 25kAIC at 480VAC. Both share the exact same physical ED frame dimensions and mounting style.
Will the ED42B040 fit in a standard residential load center?
No, the ED42B040 is a bolt-on molded case circuit breaker designed for commercial and industrial panelboards and switchboards. It is not compatible with standard residential plug-on load centers that require QP or QT type breakers.
Does the ED42B040 provide ground fault or arc fault protection?
No, the ED42B040 is a standard thermal-magnetic circuit breaker that provides long-time and instantaneous trip functions for overcurrent and short-circuit protection. It does not include GFCI or AFCI safety features.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 20 reviews.
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Rating
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.