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Siemens HED43B040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Siemens
HED43B040
Molded Case Circuit Breaker
Brand
Siemens
SKU
HED43B040
Quantity
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Siemens HED43B040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens HED43B040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HED43B040 |
| Series | HED4 |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 42kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | HED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P1, P2, P3), SB Switchboards, Motor Control Centers |
| Wire Gauge | 10 AWG - 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 | Load Side 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 |
Quantity
Siemens HED43B040 - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HED43B040-R |
| Series | HED4 |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 42kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | HED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P1, P2, P3), SB Switchboards, Motor Control Centers |
| Wire Gauge | 10 AWG - 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 | Load Side 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 |
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Description
Built to handle severe electrical faults, the Siemens HED43B040 is a 40A, 3-pole molded case circuit breaker. It utilizes fixed thermal and magnetic trip elements to protect commercial and industrial distribution systems. The breaker bolts into Siemens Sentron P1, P2, and P3 panelboards, as well as SB switchboards. For future upgrades, it is replaced by the 3VA5140-6ED31-0AA0 with an adapter strap. It features a 42kAIC rating at 480VAC, is HACR rated, and includes load-side lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HED43B040 |
| Series | HED4 |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 42kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | HED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P1, P2, P3), SB Switchboards, Motor Control Centers |
| Wire Gauge | 10 AWG - 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 | Load Side 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
8 answersWhat electrical panels accept the HED43B040 circuit breaker?
It is approved for bolt-on installation in Siemens Sentron P1, P2, and P3 panelboards, as well as Siemens SB switchboards and motor control centers.
What wire size and material are the standard lugs rated for on the HED43B040?
The included standard lugs accept 10 AWG to 1/0 AWG copper or aluminum wire for your load connections.
Is the HED43B040 circuit breaker rated for direct current systems?
Yes. In addition to alternating current applications, this thermal magnetic breaker is rated for 250VDC systems with a maximum interrupting capacity of 30kA.
What is the difference between Siemens ED4 and HED4 circuit breakers?
The main difference is the short-circuit interrupting capacity. The HED4 series provides a high interrupting rating of 42kA at 480VAC, whereas the standard ED4 series has a lower interrupting rating. Both utilize identical ED frame dimensions.
Can the HED43B040 replace older ITE circuit breakers?
Yes. The HED43B040 shares the standard ED frame design and can physically replace older ITE or Siemens ED4, ED6, and HED6 breakers of the same pole count, provided the system voltage and interrupting requirements are met.
Is the Siemens HED43B040 suitable for reverse feed applications?
Yes. Because this ED frame circuit breaker features a non-interchangeable trip unit, it is approved for reverse feed wiring under UL 489 standards.
Is this circuit breaker suitable for protecting HVAC equipment?
Yes. The HED43B040 is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires this specific protection profile.
Are the thermal and magnetic trip elements adjustable on the HED43B040?
No. This molded case circuit breaker features fixed thermal and fixed magnetic trip settings for its long-time and instantaneous protective functions. These cannot be altered in the field.
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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.