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Siemens HEB3B050B Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Siemens
HEB3B050B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HEB3B050B
Quantity
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Siemens HEB3B050B - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Siemens HEB3B050B - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HEB3B050B |
| Series | HEB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 42kA @ 125/250VDC |
| Frame Type | HEB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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 |
|---|---|
| Accessories | Load Side Lugs (TA1EG10) |
| Standards | CSA C22.2 No. 5, HACR, HID, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, High Interrupting Capacity |
Quantity
Siemens HEB3B050B - 50A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HEB3B050B-R |
| Series | HEB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 42kA @ 125/250VDC |
| Frame Type | HEB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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 |
|---|---|
| Accessories | Load Side Lugs (TA1EG10) |
| Standards | CSA C22.2 No. 5, HACR, HID, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, High Interrupting Capacity |
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Description
Providing reliable overcurrent protection, the Siemens HEB3B050B is a 50A, 3-pole molded case circuit breaker from the Sentron line. It features fixed thermal and magnetic trip settings (LI) to safeguard commercial and industrial circuits. This bolt-on unit is engineered to fit Siemens P3, P4, and P5 panelboards. With an impressive 65 kAIC rating at 480VAC and 100 kAIC at 240VAC, it handles high fault currents safely. Note that this model is replaced by the HEG3B050B.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HEB3B050B-R |
| Series | HEB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 42kA @ 125/250VDC |
| Frame Type | HEB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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 |
|---|---|
| Accessories | Load Side Lugs (TA1EG10) |
| Standards | CSA C22.2 No. 5, HACR, HID, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, High Interrupting Capacity |
Product FAQs
6 answersDoes the HEB3B050B fit in standard Siemens residential load centers?
No, this is a bolt-on molded case circuit breaker designed specifically for commercial and industrial panelboards like the Siemens P3, P4, and P5 series. It will not fit in standard residential plug-on load centers that require QP-type breakers.
What is the difference between a Siemens NEB and HEB breaker?
Both breakers share the exact same physical frame and panelboard mounting requirements, but the HEB represents the High Interrupting capacity version. The HEB3B050B is capable of safely clearing up to 65kAIC at 480VAC, whereas standard NEB breakers are built for lower fault current environments.
Do I need a separate mounting kit to install the HEB3B050B in a Siemens panelboard?
If you are installing this breaker into a previously unused branch space in a Siemens P3 panelboard, you will typically need a dedicated branch breaker mounting kit, such as the BBKEB32 twin breaker strap kit, to secure it to the panel bus. If you are replacing an existing HEB or NEB breaker, you can usually reuse the installed hardware.
Is the Siemens HEB3B050B HACR rated?
Yes, Siemens HEB frame circuit breakers are HACR rated. This certifies the breaker for safe and compliant use with heating, air conditioning, and refrigeration equipment motor loads.
Are the factory lugs on this breaker rated for aluminum wiring?
Yes, the standard load-side lugs included with the HEB3B050B are AL/CU dual-rated. They safely accept aluminum conductors from 12 AWG up to 1/0 AWG, as well as copper wire from 14 AWG to 1/0 AWG.
Is this breaker suitable for use in DC electrical systems?
Yes, in addition to its standard AC capabilities, the HEB3B050B features a thermal-magnetic trip unit that is fully rated for direct current applications. It supports 125/250VDC systems with an interrupting capacity of 42kA.
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Reviews
Review summary
Customers rate this product 4.0 out of 5 based on 1 review.
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1 review
- JJohnReviewingSiemens HEB3B015B - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars9/19/234 Stars
Great service