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Siemens LGB2B080B Molded Case Circuit Breaker
- 80A
- 2 Pole
- Bolt-On
Siemens
LGB2B080B
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGB2B080B
Quantity
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Siemens LGB2B080B - 80A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial power systems, the Siemens LGB2B080B is an 80A, 2-pole molded case circuit breaker. It utilizes a trip-free mechanism with fixed thermal and magnetic settings to deliver consistent protection. The low-tab, bolt-on design installs into Siemens P1, P2, and P3 panelboards. When upgrading, this unit is replaced by the 3VA4180-6ED24-0AA0 (requires an adapter kit). Delivering a 65kA interrupting rating at 480Y/277VAC, this HACR-rated breaker supports reverse feeding.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LGB2B080B |
| Series | LGB |
| Amperage | 80A |
| 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 | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 8 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, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip, High Interrupting Capacity |
Product FAQs
6 answersWhich panelboards are compatible with the Siemens LGB2B080B breaker?
This bolt-on breaker is designed for use in Siemens P1, P2, and P3 panelboards.
What wire sizes are accepted by the load side lugs on this breaker?
The factory-installed lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
Is the LGB2B080B rated for direct current (DC) applications?
Yes, this breaker is rated for 125/250VDC systems with an interrupting capacity of 14kA.
How does the interrupting rating change depending on the system voltage?
The breaker provides 100kA at 240VAC, 65kA at 480/277VAC, and 14kA at 600/347VAC.
Are the thermal and magnetic trip settings adjustable on this model?
No, the LGB2B080B features a fixed thermal and fixed magnetic trip unit for standard long-time and instantaneous (LI) protection.
How does this breaker connect to the panelboard?
It features a bolt-on connection for secure mounting directly to the panelboard bus.
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