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Siemens HGB1B025B Molded Case Circuit Breaker
- 25A
- 1 Pole
- Bolt-On
Siemens
HGB1B025B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGB1B025B
Quantity
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Siemens HGB1B025B - 25A 1 Pole Molded Case Circuit Breaker
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Description
Built for demanding commercial environments, the Siemens HGB1B025B is a 25A, 1-pole molded case circuit breaker with fixed thermal-magnetic trip technology. It installs into Siemens P1, P2, and P3 panelboards via a secure bolt-on connection. It can be replaced by the 3VA4125-5ED14-0AA0 using an xGB/3VA strap kit. The unit features a high interrupting capacity of 65kAIC at 120VAC and 35kAIC at 277VAC. It is HACR and HID rated for specialized lighting and HVAC loads.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGB1B025B |
| Series | HGB |
| Amperage | 25A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 35kA @ 277VAC, 42kA @ 125VDC, 14kA @ 347VAC |
| Frame Type | HGB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-10 AWG (Cu/Al) |
| Max Wire | 10 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, 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, HID Rated |
Product FAQs
6 answersWhich Siemens panelboards are compatible with the HGB1B025B?
This bolt-on breaker is designed specifically for Siemens Sentron P1, P2, and P3 commercial panelboards. It cannot be installed in standard residential plug-on load centers.
What type of wire can be terminated on the HGB1B025B lugs?
The factory-installed lugs accept 14 to 10 AWG copper or aluminum conductors. Always verify the specific torque requirements printed on the breaker faceplate before finalizing terminations.
Is the HGB1B025B suitable for direct current (DC) applications?
Yes, this breaker is rated for DC systems up to 125VDC, providing a 42kA interrupting capacity for specialized control or battery circuits.
How does the HGB series differ from standard GB or BQD breakers?
The H designation indicates a higher interrupting capacity. While standard breakers offer lower fault current ratings, the HGB1B025B provides up to 65kAIC at 120VAC and 35kAIC at 277VAC for systems with higher available fault currents.
Does this 25-amp breaker include ground fault or arc fault protection?
No. The HGB1B025B features standard thermal-magnetic trip technology with fixed long-time and instantaneous (LI) functions. It does not provide GFCI, AFCI, or equipment protection (EPD) capabilities.
How does the HGB1B025B connect to the panelboard bus?
It utilizes a bolt-on connection. This requires mechanically fastening the breaker directly to the busbars of a compatible P-series panelboard, ensuring a secure and reliable contact in commercial environments.
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