PRO PNR LC MB 12S/24C 1PH 100A – Product Description
🔌 What it is
This is a Siemens Pro Series load center (electrical panel) — essentially a residential/commercial breaker box used to distribute power to branch circuits.
🧾 Breaking down the code
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PRO PNR → Pro Panelboard / Load Center series
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LC → Load Center
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MB → Main Breaker (panel has a built-in main disconnect)
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12S/24C →
- 12 spaces (1-inch breaker positions)
- supports up to 24 circuits using tandem breakers
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1PH → Single-phase power (120/240V residential system)
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100A → 100-amp main breaker rating
⚡ What it does
This panel:
- Receives incoming power from the utility meter
- Distributes power to individual circuit breakers
- Protects circuits with a 100A main breaker
- Supports multiple branch circuits (lighting, outlets, appliances)
🏠 Typical use
- Residential homes
- Small commercial buildings
- Garages / shops / accessory buildings
- Electrical service upgrade panels (100A service)
🧠 Plain-English summary
This is a 100-amp main breaker electrical panel that holds up to 24 circuits in a single-phase 120/240V system.
🔧 Key takeaway
- It is not a breaker or wire—it’s the main distribution panel (breaker box)
- All your previous breakers (GFCI, AFCI, QPF/QAF, etc.) would install inside this type of load center
