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Siemens HGG3B125L Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Siemens
HGG3B125L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGG3B125L
Quantity
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Siemens HGG3B125L - 125A 3 Pole Molded Case Circuit Breaker
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Description
Operating within the Siemens Sentron series, this 125A, 3-pole breaker offers fixed thermal and magnetic trip settings. It is designed to protect commercial and industrial electrical systems. The unit-mount design fits into Siemens P1, P2, and P3 panelboards and enclosures. When upgrading, it is replaced by the 3VA5112-5EC31-0AA0, which requires a retrofit kit for panelboard installations. Rated for 35kAIC at 480VAC, it provides high interrupting capacity for demanding environments.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGG3B125L |
| Series | HGG |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 250VDC |
| Frame Type | HGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu) / 2/0 AWG (Al) |
| 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, Undervoltage Release, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip |
Product FAQs
5 answersWhich Siemens panelboards are compatible with the HGG3B125L?
This unit mount breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards and enclosures. It features a feed-thru connection type, meaning it is typically lugged on both the line and load sides rather than mounting directly to a busbar.
What wire sizes and materials do the HGG3B125L lugs accept?
The included lugs accommodate 8 to 1/0 AWG copper conductors or 8 to 2/0 AWG aluminum conductors. Always verify local codes and apply the manufacturer recommended torque during installation.
Can the HGG3B125L be installed in DC electrical systems?
Yes, in addition to its standard AC ratings, this breaker is certified for direct current applications up to 250VDC, providing a 14kA interrupting rating for those systems.
Are the trip settings on the HGG3B125L adjustable?
No, this breaker uses a thermal magnetic trip unit with fixed long-time and fixed instantaneous trip functions. The trip curve cannot be modified in the field.
What accessory frame class does the HGG3B125L belong to?
This breaker is part of the Siemens SENTRON family and falls under the GB and GG frame group. It is compatible with standard internal and external accessories designed for Siemens GG frame breakers.
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