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Siemens LGB1B015B Molded Case Circuit Breaker
- 15A
- 1 Pole
- Bolt-On
Siemens
LGB1B015B
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGB1B015B
Quantity
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Siemens LGB1B015B - 15A 1 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial power distribution, this 15-amp Sentron series component delivers reliable thermal-magnetic trip functions. It features a low tab design tailored for seamless integration into modern electrical systems. The unit installs into Siemens P1, P2, and P3 panelboards, offering a high-performance bolt-on connection. It serves as a legacy solution, with the 3VA41 series acting as its modern replacement. Rated for 65kAIC at 277VAC, it includes HACR and SWD ratings.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LGB1B015B |
| Series | LGB |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 120VAC, 65kA @ 277VAC, 14kA @ 125VDC, 14kA @ 347VAC |
| 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, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, SWD Rated, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
6 answersWhich panelboards are compatible with the Siemens LGB1B015B?
This 1-pole breaker is designed for use in Siemens P1, P2, and P3 panelboards. It features a bolt-on connection for secure mounting directly to the panelboard bus.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory-installed lugs accept 14-6 AWG copper (Cu) wire or 12-6 AWG aluminum (Al) wire. Ensure you use the correct wire gauge and material for your specific load and local code requirements.
Can the LGB1B015B be used in direct current (DC) applications?
Yes, this thermal-magnetic breaker is rated for use in DC systems up to 125VDC, where it provides an interrupting capacity of 14kAIC. This makes it versatile for both AC and specific DC control or distribution circuits.
How does the interrupting capacity change based on the system voltage?
The maximum fault current this breaker can safely interrupt depends on the operating voltage. It is rated for 100kAIC at 120VAC, 65kAIC at 277VAC, and 14kAIC at 347VAC. Always verify the available fault current at your panel to ensure the breaker is adequately rated.
Is the trip unit on the LGB1B015B adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time (L) and instantaneous (I) trip functions are factory-calibrated for 15 amps and cannot be adjusted in the field.
What frame family does the LGB1B015B belong to?
It is part of the Siemens SENTRON family and belongs to the GB/GG frame group. The LGB designation indicates it is configured specifically for bolt-on panelboard mounting.
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