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Siemens LGB2B020B Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Siemens
LGB2B020B
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGB2B020B
Quantity
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Siemens LGB2B020B - 20A 2 Pole Molded Case Circuit Breaker
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Description
Built for demanding industrial environments, the Siemens LGB2B020B is a 2-pole, 20A molded case circuit breaker from the Sentron GB frame lineup. The unit features a low-tab bolt-on mounting style that fits seamlessly into Siemens P1, P2, and P3 panelboards. When replacing older units, note this model transitions to the 3VA4120-6ED24-0AA0. Rated for 100 kAIC at 240VAC and 65 kAIC at 480Y/277VAC, it handles significant short-circuit events and is suitable for reverse feed applications.Specifications
| Brand | Siemens |
|---|---|
| Series | LGB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | LGB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 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 |
|---|---|
| Accessories | Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip, High Interrupting Capacity |
Product FAQs
5 answersWhich Siemens panelboards are compatible with the LGB2B020B?
This breaker is designed for use in Siemens P1, P2, and P3 series panelboards. It utilizes a low tab panelboard mounting connection.
Can the LGB2B020B be used in reverse feed applications?
Yes, this circuit breaker is suitable for reverse feed applications. This allows power to be supplied to the load terminals instead of the line terminals when required by the panel configuration.
What wire sizes are accepted by the lugs on this breaker?
The load side lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire.
Is this breaker rated for direct current applications?
Yes, in addition to its standard AC ratings, this model is rated for 125V and 250V DC systems with a 14kA interrupting capacity.
What frame family does this breaker belong to?
It is part of the Siemens SENTRON family and falls under the GB and GG frame group, specifically utilizing the LGB frame design.
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