Eaton Meter Stack Module Three...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4,731.14
$1,702.51
Eaton 3MM412RRL Eaton's Three-Phase Residential Meter Stack Module, Group Metering Type, 125A, Aluminum Bus 800 Ampere, No bypass, Indoor/outdoor, Five-jaws, 4 Sockets, Three-phase in, single-phase out, Ringless Security, 120/208V

Eaton Meter Stack Module Three-Phase Residential 125A 800A Bus 4-Socket Group Metering 120/208V Indoor/Outdoor

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Model: 3MM412RRL
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$4,731.14
$1,702.51
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Eaton Three-Phase Residential Meter Stack Module

Professional Multi-Tenant Electrical Metering Solution

The Eaton Three-Phase Residential Meter Stack Module delivers exceptional electrical power distribution and metering performance for multi-tenant residential applications. This 125A group metering system with 800A aluminum bus provides reliable three-phase to single-phase power distribution designed for professional electricians, electrical contractors, and facility managers, offering the proven reliability and advanced technology that professionals trust from the global leader in intelligent power management.

Professional Features & Benefits

Advanced Metering Performance

  • 125A Individual Socket Rating - Provides reliable metering capacity for residential units with professional-grade current handling capability
  • 800A Aluminum Bus System - Heavy-duty aluminum bus construction ensures excellent conductivity and long-term electrical performance
  • 4-Socket Configuration - Accommodates up to four individual meters for efficient multi-tenant electrical distribution
  • Five-Jaw Meter Connection - Professional five-jaw design provides secure meter mounting and reliable electrical connections

Power Distribution Excellence

  • Three-Phase Input to Single-Phase Output - Efficiently converts three-phase utility power to single-phase distribution for residential applications
  • 120/208V Voltage Rating - Standard commercial voltage configuration for reliable residential power distribution
  • Group Metering Type - Designed for centralized metering applications in multi-unit residential buildings

Installation & Protection

  • Indoor/Outdoor Enclosure Rating - Versatile installation capability for both interior and exterior mounting applications
  • Ringless Security Design - Enhanced security features prevent unauthorized meter tampering and ensure billing accuracy
  • UL Listed Certification - Meets rigorous electrical safety standards for professional installation confidence

Technical Specifications

Individual Socket Rating: 125A, Bus Rating: 800A, Voltage Rating: 120/208V, Phase Configuration: Three-phase in/single-phase out, Number of Sockets: 4, Jaw Configuration: Five-jaw, Bus Material: Aluminum, Enclosure: Indoor/outdoor, Security: Ringless, Bypass: None, Dimensions: 54.5" L x 15" W x 8" H, Weight: 61 lbs, Certifications: UL Listed, Utility Approvals: Central Maine Power, Compatible Secondary Breakers: BR2_, BRH2_, BRHH2_ series

Installation & Usage

  1. Verify proper three-phase utility supply voltage and phase rotation before installation
  2. Mount meter stack module securely using appropriate structural support for 61-pound unit weight
  3. Connect three-phase utility supply to main bus terminals following local electrical codes
  4. Install individual meters in five-jaw sockets ensuring proper seating and security
  5. Connect individual unit feeders to designated load terminals for each metered circuit
  6. Verify all connections are tight and properly torqued according to manufacturer specifications
  7. Test meter operation and phase balance before energizing tenant circuits

Professional Applications

Ideal for:

  • Multi-Tenant Residential Buildings - Apartment complexes, condominiums, and residential developments requiring individual metering
  • Commercial Mixed-Use Properties - Buildings combining residential and light commercial spaces with separate metering needs
  • Student Housing Facilities - Dormitories and student apartment buildings requiring individual utility billing
  • Senior Living Communities - Independent living facilities with individual unit metering requirements
  • Townhouse Developments - Multi-unit residential projects with centralized utility connections
  • Mobile Home Parks - Manufactured housing communities requiring centralized metering infrastructure
  • Affordable Housing Projects - Government-assisted housing developments with individual tenant billing requirements
  • Property Management Applications - Rental properties requiring accurate individual utility measurement and billing

Group Metering Advantage

Eaton's group metering design provides centralized utility connection with individual tenant measurement, reducing utility infrastructure costs while maintaining accurate billing capabilities. The three-phase to single-phase conversion optimizes power distribution efficiency for residential loads while the 800A bus rating accommodates future expansion and load growth.

Why Choose Eaton Quality?

With over a century of electrical power management innovation, Eaton delivers the reliability and performance that electrical professionals trust. Our meter stack modules feature UL Listed certification, utility company approvals, and robust construction designed for long-term service in demanding multi-tenant applications. Trusted by electricians, electrical contractors, and facility professionals worldwide for superior electrical safety, reliability, and professional installation support.

Manufacturer Resources

Product Specs

Amperage Rating:
125A
Bus Material:
Aluminum
Bus Rating:
800 A
Bypass:
None
Certifications:
UL Listed
Enclosure:
Indoor/outdoor
Interrupt Rating:
Depends on selected main circuit breaker
Number Of Jaws:
Five-jaw
Number Of Sockets:
4
Phase:
Three-phase in, single-phase out
Phase Balance:
A-B
Product Height:
8 in
Product Length Depth:
54.5 in
Product Weight:
61 lb
Product Width:
15 in
Secondary Circuit Breaker:
BR2_, BRH2_, BRHH2_
Security:
Ringless
Utility Approvals:
ME : Central Maine Power
Voltage Rating:
120/208V
Product Subgroup:
Meter Stack
Product Group:
Electrical
Department:
Electrical
Product Details:
Group Metering

Eaton 3MM412RRL – Frequently Asked Questions

1) What is this Eaton meter stack module used for?
This is a group metering module for three-phase residential applications. It houses multiple electric meters in a single enclosure. Supports up to 800 ampere bus capacity with individual 125A meter positions.
2) How many meter positions does this unit provide?
This module has five jaw positions with four meter sockets. Configuration is three-in, single-out with ringless design. Each position accommodates standard residential meters.
3) Can this be installed both indoors and outdoors?
Yes, this unit is rated for both indoor and outdoor installation. Aluminum bus construction provides corrosion resistance. Verify local utility requirements for outdoor mounting height and clearances.
4) What voltage configuration does this support?
This module is designed for 120/208V three-phase systems. Standard residential voltage for multi-unit applications. Verify utility service matches before installation.
5) Does this unit include bypass capability?
No, this is a no-bypass configuration. Service disconnection requires utility involvement for meter changes. Consider bypass modules if frequent maintenance access is needed.
6) What are the key installation requirements?
Requires utility approval before installation. Must mount at utility-specified height with proper working clearances. Aluminum bus requires compatible lugs and proper torque values. Check local electrical codes.
7) What does ringless security mean?
Ringless design eliminates the traditional meter ring seal. Security is maintained through integrated locking mechanisms. Reduces tampering points while simplifying meter changes for utilities.
8) How do I determine proper mounting height?
Mounting height varies by utility requirements. Typically 4-6 feet to meter center. Check utility service manual for exact specifications. Consider accessibility for meter readers and maintenance personnel.
9) What maintenance does this equipment require?
Periodic inspection of connections and bus bars. Check for corrosion on aluminum components. Verify torque on lugs annually. Only qualified personnel should perform internal maintenance. Coordinate with utility for meter-side work.
10) Are there similar Eaton meter stack options?
Eaton offers various meter stack configurations with different jaw counts and amperage ratings. Options include bypass versions and different bus materials. Check our Eaton electrical products for alternatives.
11) What size conductors work with the 800A bus?
Conductor sizing depends on actual load requirements and local codes. 800A bus capacity allows for future expansion. Consult electrical engineer for proper conductor selection. Use aluminum-rated lugs with aluminum bus.
How fast can I get the Eaton 3MM412RRL delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton 3MM412RRL come with a warranty?
Absolutely. The Eaton 3MM412RRL is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton 3MM412RRL?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Eaton 3MM412RRL from ZenSupply?
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