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Siemens HEB3B125B Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Siemens
HEB3B125B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HEB3B125B
Quantity
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Siemens HEB3B125B - 125A 3 Pole Molded Case Circuit Breaker
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Siemens HEB3B125B - 125A 3 Pole Molded Case Circuit Breaker
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| Brand | Siemens |
|---|---|
| Part Number | HEB3B125B |
| Series | HEB |
| Amperage | 125A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 6-3/0 AWG (Cu/Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 6 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 |
|---|---|
| Accessories | Load Side Lugs (3TA1EG30) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Quantity
Siemens HEB3B125B - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HEB3B125B |
| Series | HEB |
| Amperage | 125A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 6-3/0 AWG (Cu/Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 6 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 |
|---|---|
| Accessories | Load Side Lugs (3TA1EG30) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Description
Operating as a reliable commercial safeguard, the Siemens HEB3B125B is a 3-pole, 125A molded case circuit breaker. It features fixed thermal and magnetic trip elements to protect against overloads. Featuring a bolt-on configuration, this MCCB installs into Siemens P3, P4, and P5 panelboards. It includes load-side lugs that accept 6-3/0 AWG wire. This model crosses over to the HEG3B125B. It boasts a 65 kAIC rating at 480VAC and is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HEB3B125B |
| Series | HEB |
| Amperage | 125A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P3, P4, P5 Panelboards |
| Wire Gauge | 6-3/0 AWG (Cu/Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 6 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 |
|---|---|
| Accessories | Load Side Lugs (3TA1EG30) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhich Siemens panelboards accept the HEB3B125B breaker?
This bolt-on molded case circuit breaker is designed exclusively for installation in Siemens P3, P4, and P5 series panelboards.
Do I need to purchase line-side lugs for the HEB3B125B?
No. As a dedicated panelboard circuit breaker, the HEB3B125B bolts directly to the bus on the line side. It comes with terminal lugs on the load side that accept 6 to 3/0 AWG copper or aluminum conductors.
What is the difference between Siemens HEB3B125B and NEB3B125B circuit breakers?
The primary difference is the short-circuit interrupting capacity. The HEB3B125B is the high-interrupting version, rated at 65kA at 480VAC. The NEB3B125B is the standard-interrupting version, rated at 35kA at 480VAC.
Can I substitute an HEG3B125B for this breaker in my panel?
No, the mounting styles are different. The HEB3B125B is a bolt-on panelboard breaker that connects directly to the panel bus. The HEG3B125B is a general-purpose breaker equipped with lugs on both the line and load sides for standard surface or DIN-rail mounting.
Can this MCCB be used in DC voltage systems?
Yes. In addition to alternating current applications, the HEB3B125B is rated for 125/250VDC systems and provides a 42kA interrupting rating for direct current protection.
Are the thermal-magnetic trip points adjustable on this breaker?
No. The Long-Time and Instantaneous (LI) protection functions on the HEB3B125B utilize a fixed thermal-magnetic trip unit. Field adjustments are not supported.
What circuit breaker frame family does the HEB3B125B belong to?
It is part of the Siemens EG 125A frame family. The NEB and HEB series represent the panelboard-mounted configurations within this broader frame group.
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Reviews
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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