Siemens - LGB3B090B 90A 3-Pole 600V Bolt-On Molded Case Circuit Breaker
Siemens - LGB3B090B 90A 3-Pole 600V Bolt-On Molded Case Circuit Breaker
Product images are representative only. Actual product may vary.
The Siemens LGB3B090B is a 3-pole, 90-amp thermal magnetic molded case circuit breaker (MCCB) rated for 600VAC with bolt-on mounting. Engineered for industrial and commercial three-phase power distribution, this LGB-frame breaker delivers reliable overload and short-circuit protection. Its bolt-on design provides a secure, vibration-resistant connection in compatible Siemens panelboards and switchboards.
Specifications
| Attribute | Value |
|---|---|
| Part Number | LGB3B090B |
| Manufacturer | Siemens |
| Amperage Rating | 90A |
| Voltage Rating | 600VAC |
| Number of Poles | 3 |
| Trip Type | Thermal Magnetic |
| Mount Type | Bolt-On |
| Interrupting Rating | 65kA @ 240V / 25kA @ 600V |
| Standard | UL 489 Listed |
| Frame Series | LGB |
Key Features
- Bolt-on design for secure, vibration-resistant mounting in Siemens-compatible panelboards
- Thermal magnetic trip for reliable time-delay overload and instantaneous fault protection
- 90-amp, 600V rating for industrial and commercial branch and feeder circuits
- 3-pole design for balanced three-phase 600V protection
- UL 489 Listed, NEC compliant
- Field-installable accessories available for enhanced functionality
Common Applications
- 90A three-phase branch and feeder circuit protection in 600V industrial panels
- Motor branch circuit and feeder protection in switchboards
- Commercial and industrial distribution panels up to 600V
- HVAC and process equipment feeders at 600V
- Replacement breaker in Siemens LGB-frame compatible panelboards
Frequently Asked Questions
What is the Siemens LGB3B090B?
The Siemens LGB3B090B is a 90-amp, 3-pole, 600V thermal magnetic bolt-on MCCB used for branch circuit and feeder protection in three-phase industrial and commercial 600V electrical distribution systems.
What does the B suffix mean in LGB3B090B?
The B suffix in Siemens LGB-series part numbers typically indicates a specific terminal or accessory configuration. Consult Siemens product documentation for the exact meaning and available options for this model.
Is the LGB3B090B in stock?
Yes. Alpha Brokers & Controls stocks the Siemens LGB3B090B. Contact us for current availability and fast shipping.