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Siemens LGG3B070L Molded Case Circuit Breaker
- 70A
- 3 Pole
- Unit Mount
Siemens
LGG3B070L
Molded Case Circuit Breaker
Brand
Siemens
SKU
LGG3B070L
Quantity
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Siemens LGG3B070L - 70A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty industrial use, the Siemens LGG3B070L is a 70A, 3-pole MCCB. It operates within the Sentron GB/GG frame family to deliver power distribution for switchboards and control panels. The unit mount design allows for versatile integration, including DIN rail mounting. For upgrades, it is replaced by the 3VA5170-6EC31-0AA0 (requires 3VA9133-0JB11 lug kit). It utilizes thermal-magnetic LI trip technology and provides a 65kAIC rating at 480VAC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LGG3B070L |
| Series | LGG |
| Amperage | 70A |
| 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 | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu), 2/0 AWG (Al) |
| Min Wire | 8 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 answersWhat mounting methods are supported for the LGG3B070L?
This unit mount breaker can be installed using standard screw mounting or snapped onto a standard 35mm DIN rail.
What are the acceptable wire sizes for the terminals on this breaker?
The factory installed lugs accept 8 to 1/0 AWG copper wire or 8 to 2/0 AWG aluminum wire.
Can the trip settings be adjusted on the LGG3B070L?
The thermal (long time) trip is fixed at 70 amps, but the magnetic (instantaneous) trip setting is adjustable to accommodate different inrush currents.
Where is the LGG3B070L typically installed?
It is designed for use in Siemens enclosures, industrial control panels, and switchboards that accept unit mount or DIN rail mounted GB or GG frame breakers.
Is this breaker rated for direct current (DC) applications?
Yes, it carries a DC interrupting rating of 14kA at both 125VDC and 250VDC.
What is the recommended replacement for the LGG3B070L?
For upgrades or replacements, the modern equivalent is the Siemens 3VA5170-6EC31-0AA0 molded case circuit breaker. Note that this replacement requires the 3VA9133-0JB11 lug kit for proper installation.
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