When it comes to multi-tenant metering solutions, Siemens WEP and WEPK series meter packs are some of the most trusted in the industry. Whether you’re outfitting a duplex, a small commercial building, or a new residential development, knowing which model to use is critical for compliance, efficiency, and safety.

In this blog, we’ll break down the differences between the popular WEPK4411 and WEPK4412 models and provide an overview of Siemens meter pack naming conventions, so you can confidently select the right unit for your project.

WEPK4411 vs. WEPK4412: What’s the Difference?

Feature WEPK4411 WEPK4412
Max Socket Rating 125A 225A
Max Branch Breaker 125A 200A
AIC Rating 100,000 AIC 65,000 AIC
Number of Meter Sockets 4 (4-Gang) 4 (4-Gang)
Voltage 120/240V Single Phase 120/240V Single Phase
Load Center Main 400A 400A

In summary:

  • WEPK4411 is ideal for ADUs, duplexes, and lower-capacity residential projects.

  • WEPK4412 supports higher load requirements, such as larger residential units or small commercial properties.

Decoding Siemens Meter Pack Model Numbers

Siemens meter packs follow a predictable naming pattern that helps you understand their specs at a glance:

Example: WEPK6612

  • WEP: Stands for "Wall Mount, EUSERC Compliant, Panel Mount"

  • K: Indicates a ringless style panel (no bypass provisions unless stated)

  • 66: Refers to the number of meter sockets (6-Gang) and service rating (600A total panel rating)

  • 12: The last digits usually reference the max socket rating (e.g., 12 = 225A per socket)

Siemens Meter Pack Options at a Glance

Model Range Total Amps Gang Options (Meter Positions) Max Per Socket Best For
WEPK2211 200A 2-Gang 125A Duplexes, small garage conversions
WEPK3311 300A 3-Gang 125A Triplexes, ADUs
WEPK4411 400A 4-Gang 125A Moderate-load residential setups
WEPK4412 400A 4-Gang 225A High-load multi-unit residential
WEPK4312 400A 3-Gang 125A Multi-family homes with separate meters
WEPK6512 600A 5-Gang 125A Apartment units or small strip centers
WEPK6611 600A 6-Gang 125A Mid-size multi-unit developments

Key Considerations When Choosing a Meter Pack

  1. Amperage Requirements: Always confirm the max load requirements for each unit.

  2. Local Utility Standards: Ensure compliance with EUSERC and utility-specific rules.

  3. Meter Style: Ring vs. ringless, bypass requirement, socket rating.

  4. Breaker Compatibility: Know which breaker types (QS, QSH, etc.) your panel supports.

Need Help?

Still unsure which Siemens meter pack is right for your project? Reach out to Sonic Electric for expert guidance and quick delivery. We stock a full range of Siemens WEP and WEPK models to meet your jobsite needs.

Call us at (323) 934-3744 or visit SonicElectric.com to learn more.

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