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Siemens HGG2B125L Molded Case Circuit Breaker
- 125A
- 2 Pole
- Unit Mount
Siemens
HGG2B125L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGG2B125L
Quantity
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Siemens HGG2B125L - 125A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial applications, the Siemens HGG2B125L delivers robust overcurrent protection. This 2-pole MCCB features fixed thermal-magnetic trip settings to safeguard electrical infrastructure. The unit mount design integrates into Siemens P1, P2, and P3 panelboards or standalone enclosures. It replaces legacy LGG2B125L breakers and includes factory-installed lugs. Built on the Sentron frame, it offers a 35kA interrupting capacity at 480VAC and is fully HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Series | HGG |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 30kA @ 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 |
|---|---|
| Accessories | Line and Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
Product FAQs
8 answersWhat types of Siemens equipment is the HGG2B125L compatible with?
This breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards and standalone enclosures.
How is the HGG2B125L circuit breaker mounted?
It features a unit mount design. It can be base mounted or installed on a standard DIN rail without the need for additional mounting adapters.
Does this breaker include lugs, and what wire sizes are accepted?
Yes, the L suffix in the HGG2B125L catalog number indicates that factory-installed line and load lugs are included. The lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
Can the HGG2B125L be used in direct current (DC) systems?
Yes, this breaker is rated for DC applications up to 250VDC, providing a maximum interrupting capacity of 30kAIC at that voltage.
Is this breaker HACR rated for HVAC equipment?
Yes, the HGG2B125L is fully HACR rated, making it suitable for group motor applications like heating, air conditioning, and refrigeration equipment.
Are the trip settings on the HGG2B125L adjustable?
No, this breaker features a thermal-magnetic trip unit with fixed long-time (thermal) and fixed instantaneous (magnetic) trip functions. It cannot be adjusted in the field.
Can the HGG2B125L replace a legacy LGG2B125L breaker?
It shares the same physical footprint as the discontinued LGG2B125L and can physically replace it. However, you must verify your system's fault current requirements. The HGG2B125L has a lower interrupting rating of 35kAIC at 480VAC compared to the legacy LGG which was rated for 65kAIC at 480VAC.
What is the difference between the HGG2B125L and the standard GG2B125L?
Both are 125A, 2-pole breakers in the same Sentron frame size, but the HGG series features a higher interrupting capacity. The HGG2B125L is rated for 35kAIC at 480VAC, while the standard GG series has a lower short-circuit rating.
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