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Siemens LGB3B025B Molded Case Circuit Breaker
- 25A
- 3 Pole
- Bolt-On
Siemens
LGB3B025B
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGB3B025B
Quantity
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Siemens LGB3B025B - 25A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens LGB3B025B - 25A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Series | LGB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| 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 | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Low Tab, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip |
Quantity
Siemens LGB3B025B - 25A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | LGB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| 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 | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Low Tab, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip |
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Description
Built for commercial and industrial power systems, the Siemens LGB3B025B 3-pole, 25A molded case circuit breaker utilizes a trip-free mechanism with fixed thermal and magnetic settings to deliver dependable LI protection. This GB-frame breaker mounts into Siemens P1, P2, and P3 panelboards. It is officially replaced by the newer 3VA5125-6ED31-0AA0 frame for future upgrades. Delivering a 65kAIC rating at 480Y/277V, this HACR and HID-rated unit is equipped with load side lugs only.Specifications
| Brand | Siemens |
|---|---|
| Series | LGB |
| Amperage | 25A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| 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 | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Low Tab, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the Siemens LGB3B025B?
This bolt-on circuit breaker is designed specifically for use in Siemens P1, P2, and P3 panelboards. It serves as the panelboard-mounted version of the Siemens GG frame.
Is the Siemens LGB3B025B suitable for reverse feed applications?
Yes, the LGB frame circuit breakers are suitable for reverse feed applications, allowing them to be back-fed in compatible panelboard configurations.
Can this 3-pole breaker be used in direct current (DC) systems?
Yes, the LGB3B025B is rated for DC applications up to 250VDC with a 14kA interrupting capacity. Follow standard Siemens wiring guidelines for multi-pole DC configurations to ensure proper voltage distribution across the contacts.
Are internal accessories field-installable on the LGB3B025B?
Yes, Siemens GB frame breakers support field-installable internal accessories, including shunt trips, auxiliary switches, and alarm switches. These accessories are shared across the BQD, NGB, and LGB breaker families.
What is the difference between Siemens LGB and LGG circuit breakers?
Both belong to the same Siemens 125A frame family and share identical trip characteristics and accessories. The LGB is configured with a line connection for bolt-on panelboard mounting, while the LGG is designed for DIN rail or base mounting.
Does the LGB3B025B have a trip-free mechanism?
Yes, it features an overcenter toggle mechanism that is trip-free. If an overcurrent condition occurs, the contacts are forced apart and the breaker cannot be held closed by manually holding the handle in the ON position.
Can the trip settings on the LGB3B025B be adjusted in the field?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous trip functions are factory calibrated and cannot be modified.
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Reviews
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Customers rate this product 5.0 out of 5 based on 1 review.
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Rating
1 review
- RSRon S.Verified BuyerReviewingSiemens LGB3B045B - 45A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/27/26Siemens Breaker
The breaker was exactly what I needed, and it came within a couple days. The price was in line of what it should’ve been. This was my third purchase from Super Breakers. I will definitely use them again in the future.