Siemens LGG3B090 - 90 A, 600 V, 3-Pole Circuit Breaker | AmpState

Secure, compact, and dependable protection for your panelboard or loadcenter—the Siemens LGG3B090 is a 3-pole molded case circuit breaker rated for 90 A at up to 600 V. Built to shield critical branches from overcurrent and short-circuit events, it’s an intelligent choice for residential, commercial, and light-industrial electrical installations.

Key advantages

• Compact molded-case design that maximizes panel space without compromising protection, helping you fit more circuits into the same enclosure.
• Thermal-magnetic trip unit delivering stable, repeatable protection performance with fast response to faults — reducing nuisance trips and enhancing safety.
• OEM compatibility with matching Siemens load centers and panelboards for a seamless, trouble-free installation and reliable long-term operation.
• Versatile for a range of applications—from upgraded residential panels to small- to medium-sized commercial and light industrial systems requiring robust 3-pole protection.

Technical specifications

• Manufacturer: Siemens
• Part Number: LGG3B090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading or retrofitting panelboards and loadcenters that require reliable 3-pole protection for three-phase or multi-branch circuits.
• New installations in residential, commercial, or light-industrial environments where compact form factors free up panel space and streamline wiring layouts.
• Situations demanding predictable protection with a thermal-magnetic trip curve to minimize nuisance trips while maintaining rapid fault interruption.

Why this matters — value that translates to real-world benefits

The LGG3B090 isn’t just a part you bolt into a panel. It’s a thoughtfully engineered protection solution that pairs Siemens reliability with practical design. The 90 A rating suits mid-range branch circuits, while the 600 V rating supports broader use in mixed-load environments. Its 3-pole construction simplifies wiring in 3-phase systems and provides balanced protection across all phases. When you prioritize OEM compatibility, you reduce troubleshooting time and ensure consistent performance across matched components, a win for maintenance crews and facilities managers alike.

Available from AmpState, the Siemens LGG3B090 offers genuine Siemens protection you can trust, backed by practical features that address real-world electrical challenges—space-conscious installation, dependable fault protection, and straightforward integration with compatible panelboards.