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Siemens HGB2B100B Molded Case Circuit Breaker
- 100A
- 2 Pole
- Bolt-On
Siemens
HGB2B100B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGB2B100B
Quantity
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Siemens HGB2B100B - 100A 2 Pole Molded Case Circuit Breaker
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Description
Capable of managing 100A commercial loads, this SENTRON family breaker ensures consistent long-time and instantaneous protection. The high-interrupting design achieves a 100kA rating at 240V while supporting reverse feed setups for versatile wiring. Installation is straightforward as it bolts into Siemens P1, P2, P3, P4, and P5 panelboards. Load side lugs are included for immediate termination. This legacy frame is officially replaced by the 3VA5110-5ED22-0AA0 when paired with a mounting kit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGB2B100B |
| Series | HGB |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 35kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 42kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 8 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, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, High Interrupting Capacity |
Product FAQs
7 answersWhich panelboards are compatible with the HGB2B100B circuit breaker?
This bolt-on breaker is designed specifically for Siemens P1, P2, P3, P4, and P5 panelboards. It secures directly to the panelboard bus, providing a robust mechanical and electrical connection for commercial and industrial applications.
Is the HGB2B100B still in active production, or is there a direct replacement?
The HGB frame is a legacy design. It is officially replaced by the Siemens 3VA5110-5ED22-0AA0 circuit breaker, which requires a specific mounting kit to retrofit into existing panelboards.
Can the HGB2B100B be used in reverse feed applications?
Yes, this breaker is suitable for reverse feed applications. Because it lacks specific line and load markings, it can be back-fed safely in compatible panelboards or enclosures.
What does the LI trip function indicate on this breaker?
The LI designation means the breaker features fixed Long-Time and fixed Instantaneous trip functions. The Long-Time function protects against sustained overloads, while the Instantaneous function trips immediately during a short circuit.
Is the HGB2B100B rated for use in direct current (DC) systems?
Yes, this breaker is rated for DC applications. It provides up to 42kA of interrupting capacity at 125/250VDC, making it suitable for specific industrial control or solar setups requiring DC protection.
What wire sizes are approved for the load side lugs on this breaker?
The included lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire. Always ensure conductors are torqued to the manufacturer specifications printed on the breaker label.
What frame group does the HGB2B100B belong to?
It belongs to the Siemens GB/GG frame group within the SENTRON family. This is important when selecting handle ties, padlocking devices, or other frame-specific accessories.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
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Rating
2 reviews
- CSCody S.Verified BuyerReviewingSiemens HGB3B020B - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/1/25I love SuperBreakers
Excellent shipping time and everything works perfectly
- JMJessica M.ReviewingSiemens HGB3B020B - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/16/23works as intended
works as intended