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SIEMENS G1212L1125 Indoor Load Center Panel – 125A, 120/240V, 12-Space - $250 (GLENVIEW)
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Condition: Used – Demo stand use only; not previously connected to a live system. Breakers and bus bars appear intact based on description. Exterior wear possible from handling. UL Listed, No. C-3176, UL File E10703.
The SIEMENS G1212L1125 is a Class CTL (Circuit Total Limiting) enclosed load center panel, designed for indoor residential or light commercial use. It provides 12 physical breaker spaces and accepts up to 24 circuits with tandem breakers. With a main lug configuration, this panel is rated for 125 Amps at 120/240V, supporting standard split-phase U.S. residential service.
This particular unit was used for demonstration purposes, not installed or energized in a production environment. It includes 12 Siemens breakers, making it a ready-to-use panel once mounted and wired. It carries a UL listing under E10703 and is compliant with NEC requirements for grounded, indoor load centers.
🔧 Specifications
Manufacturer: Siemens
Model Number: G1212L1125
UL File Number: E10703
UL Listing Number: C-3176
Panel Type: Indoor, Enclosed Load Center
Class: CTL (Circuit Total Limiting)
Mounting Type: Surface or flush mount
Main Configuration: Main Lug Only (not main breaker)
Amperage Rating: 125A
Voltage Rating: 120/240V AC, Single-phase
Bus Bar Material: Tin-plated aluminum
Interrupt Rating: Dependent on installed breaker series (usually 10kAIC standard)
Grounding / Neutral Bars: Installed
Breaker Spaces: 12
Max Circuits: 24 with tandem breakers
Breaker Type: Siemens QP series (standard thermal-magnetic breakers)
Includes:
12 installed Siemens QP breakers (specs not detailed – typically 15A or 20A single-pole)
Enclosure Type: NEMA 1 (indoor use only)
Dimensions (approx.): 14.25" H x 12.25" W x 3.88" D
Made in: USA or Mexico (based on vintage and sub-model)
🧩 Applications
Perfect for:
Indoor subpanel installations
Basement or garage power distribution
Detached building feeds (with disconnect upstream)
Demo/training setups or lab mockups
Panel upgrades where a main-lug-only panel is needed
Not suited for main service entrance unless protected by an upstream breaker or disconnect.
🔁 Cross-Referenced / Compatible Models
Siemens G1212L1125CU – Same panel with copper bus
Siemens P1224L1125CU – 24 space main lug version
Eaton BR1224L125 – Comparable 125A load center
Square D HOM612L125 – 6/12 space load center (smaller)
GE TM1212L125 – Similar indoor main lug panel
🔍 Comparable Products
Eaton CH12L125RP – 12-space, 125A main lug panel
Square D QO112L125G – 12-space QO panel (premium option)
Murray LC1212L1125 – Compatible Siemens legacy brand
GE PowerMark Gold TLM1212CCU – 125A 12-space
🔩 Additional Notes
Breakers Included: If 12 Siemens QP breakers are installed, this could represent a mix of single-pole (typically 15A/20A)
Expansion Capable: Can support up to 24 circuits using tandem breakers
Neutral and ground bars included, with labeled terminals
Demo usage implies no prior electrical loading – ideal condition for new installation
Label inside panel door typically includes wiring diagram, torque specs, and breaker compatibility list
📌 Related
Siemens indoor load center 12 space
G1212L1125 125 amp breaker box
CTL enclosed panelboard UL E10703
12/24 circuit subpanel with breakers
demo electrical panel Siemens QP type
📈 Common Requests:
“What’s the difference between G1212L1125 and G1212L1125CU?”
“Is this panel rated for main service or subpanel use?”
“Can this Siemens panel use tandem breakers?”
“What type of breakers are compatible with Siemens G1212 panels?”
“Is this load center suitable for NEC code compliance?”
⚠️ Trademarks Disclaimer
SIEMENS® and QP® are registered trademarks of Siemens AG. All trademarks and references to brand names are for informational purposes only and do not imply affiliation or endorsement. Always consult local electrical codes and licensed professionals before installation.