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Siemens LGG3B030L Molded Case Circuit Breaker
- 30A
- 3 Pole
- Unit Mount
Siemens
LGG3B030L
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGG3B030L
Quantity
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Siemens LGG3B030L - 30A 3 Pole Molded Case Circuit Breaker
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Description
The LGG3B030L is a 3-pole, 30A molded case circuit breaker from Siemens' Sentron family, built for commercial and industrial applications. It provides reliable overcurrent protection for switchboards and control panels. Designed for unit mounting or DIN rail installation, this GB/GG frame breaker accepts 14-6 AWG copper wire. It is replaced by the 3VA5130-6EC31-0AA0 for new designs. Featuring a thermal-magnetic LI trip unit, it delivers a robust 65kAIC interrupting rating at 480VAC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LGG3B030L |
| Series | LGG |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 125VDC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 125VDC, 14kA @ 250VDC |
| Frame Type | LGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Enclosures, Industrial Control Panels, Switchboards, DIN Rail |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Line & Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, NOM, UL |
| Temp Rating | 40C |
Product FAQs
6 answersCan the LGG3B030L be installed on a DIN rail?
Yes, the LGG3B030L features a unit mount design that is compatible with DIN rail installations, as well as traditional threaded screw mounting in Siemens enclosures, industrial control panels, and switchboards.
What wire gauge is required for the feed-thru lugs on the LGG3B030L?
The included line and load side lugs accept 14-6 AWG copper (Cu) wire or 12-6 AWG aluminum (Al) wire. Ensure proper torque specifications are followed during installation for secure connections.
Is there a direct replacement for the LGG3B030L in newer Siemens panel designs?
Yes, for new designs and panel upgrades, Siemens recommends the 3VA5130-6EC31-0AA0 as the modern equivalent to the legacy LGG3B030L. However, the LGG3B030L remains available for direct replacement in existing GB/GG frame installations.
How does the thermal-magnetic trip unit on the LGG3B030L operate?
The breaker uses a thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. It provides fixed thermal protection against sustained overloads and adjustable magnetic protection for immediate response to short circuits.
Is the LGG3B030L suitable for DC voltage applications?
Yes, in addition to its AC ratings, this breaker is rated for DC applications. It provides a 14kA interrupting capacity at both 125V DC and 250V DC.
Will this breaker fit in standard Siemens load centers?
The LGG3B030L is a unit mount molded case circuit breaker designed for industrial control panels, switchboards, and specific Siemens enclosures. It is not a plug-on breaker and is not intended for standard residential load centers.
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