Siemens NGG2B125L Molded Case Circuit Breaker
- 125A
- 2 Pole
- Unit Mount
Siemens
NGG2B125L
Molded Case Circuit Breaker
Brand
Siemens
SKU
NGG2B125L
Quantity
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Siemens NGG2B125L - 125A 2 Pole Molded Case Circuit Breaker
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Description
Operating within the Sentron GB/GG frame class, the Siemens NGG2B125L supplies 125A of thermal-magnetic overcurrent protection. This 2-pole MCCB is HACR rated and reverse feed capable, making it highly versatile for industrial environments. It installs into Siemens P1, P2, and P3 panelboards, alongside standard switchboards and enclosures. For newer panel designs or direct cross-reference replacements, this model transitions to the updated 3VA5112-4EC21-0AA0.Specifications
| Brand | Siemens |
|---|---|
| Series | NGG |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 65kA @ 240VAC, 25kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | NGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures, Motor Control Centers |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, NOM, UL |
| Temp Rating | 40C |
Product FAQs
6 answersHow is the NGG2B125L mounted?
The NGG frame features an integral design that allows it to be independently mounted on a standard DIN rail or base mounted with screws without requiring additional adapter plates.
Does the NGG2B125L include terminal lugs?
Yes, the L suffix in the catalog number indicates that factory-installed line and load lugs are included. To order this breaker without lugs, use catalog number NGG2B125.
What is the direct replacement for the NGG2B125L?
For newer panel designs or direct cross-reference replacements, the NGG2B125L transitions to the updated Siemens 3VA5112-4EC21-0AA0 molded case circuit breaker.
Is the NGG2B125L suitable for HVAC applications?
Yes, this breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration equipment.
Can the NGG2B125L be back-fed?
Yes, this thermal-magnetic circuit breaker is reverse feed capable, allowing it to be back-fed in industrial distribution systems.
What is the difference between Siemens NGG and NGB circuit breakers?
The NGG frame is designed for global markets and can be DIN rail or base mounted. The NGB frame shares the same internal design but is specifically configured for panelboard mounting applications.
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