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Siemens LGB2B025B Molded Case Circuit Breaker
- 25A
- 2 Pole
- Bolt-On
Siemens
LGB2B025B
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGB2B025B
Quantity
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Siemens LGB2B025B - 25A 2 Pole Molded Case Circuit Breaker
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Description
Providing reliable overcurrent defense, the Siemens LGB2B025B is a 2-pole, 25A molded case circuit breaker within the Sentron GB frame family. Designed with a low-tab panelboard mount, this breaker fastens securely into Siemens P1, P2, and P3 distribution panels. Facilities upgrading should note the LGB series is succeeded by the 3VA41 line. With an interrupting rating of 100 kAIC at 240VAC and 65 kAIC at 480Y/277VAC, it provides exceptional fault protection and is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LGB2B025B |
| Series | LGB |
| Amperage | 25A |
| 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 Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
6 answersWhich panelboards are compatible with the Siemens LGB2B025B circuit breaker?
The LGB2B025B is designed for bolt-on installation in Siemens P1, P2, and P3 distribution panelboards.
What wire sizes are accepted by the lugs on the LGB2B025B?
The factory-installed lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire.
How does the LGB2B025B mount into the panelboard?
This breaker features a bolt-on connection, providing a secure, vibration-resistant mount directly to the panelboard bus.
Can the Siemens LGB2B025B be used in DC electrical systems?
Yes, this thermal magnetic breaker is rated for DC applications, providing a 14kA interrupting capacity at 125/250VDC.
What is the modern replacement for the Siemens LGB frame circuit breakers?
Facilities looking to upgrade or replace LGB series breakers should note that the LGB frame has been succeeded by the Siemens 3VA41 line of molded case circuit breakers.
Are the trip settings adjustable on the LGB2B025B?
No, this breaker features a fixed thermal and fixed magnetic trip unit, meaning the long-time and instantaneous trip thresholds cannot be field-adjusted.
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