Eaton Meter Stack Three-Phase ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4,273.80
$4,128.80
Eaton's 37MM Three-Phase Commercial Meter Stack Modules, 400A, Lever bypass, Aluminum Bus 1200 Ampere, 1 Socket, Factory A-B Phase Balance, Three- in, three- out, Seven-jaws, 208Y/120V , Ringless Security

Eaton Meter Stack Three-Phase Commercial 400A Lever Bypass Aluminum Bus 1200A Single Socket 37MM

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Model: 37MM140R1240

In Stock (leaves warehouse same day if ordered before 3pm ET)

$4,273.80
$4,128.80
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Eaton 37MM140R1240NY 37MM-Three-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, 400A socket, 208Y/120V, Ringless, Aluminum 1200A bus, Lever bypass, Seven-jaws, Factory A-B phase balance, NY approved, Landis and Gyr

Eaton 37MM140R1240NY 37MM-Three-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, 400A socket, 208Y/120V, Ringless, Aluminum 1200A bus, Lever bypass, Seven-jaws, Factory A-B phase balance, NY approved, Landis and Gyr

Model: EAT-37MM140R1240NY

37MM-Three-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, 400A socket, 208Y/120V, Ringless, Aluminum 1200A bus, Lever bypass, Seven-jaws, Factory A-B phase balance,...

Eaton

$19,660.70
$19,610.70

Eaton 37MM Three-Phase Commercial Meter Stack Module

Professional Electrical Metering and Power Distribution Equipment

The Eaton 37MM Three-Phase Commercial Meter Stack Module delivers exceptional electrical power metering and distribution performance for commercial and industrial applications. This 400A three-phase meter stack with lever bypass and aluminum bus provides reliable power distribution and metering 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

  • 400A Three-Phase Configuration - Provides robust power handling capacity for commercial electrical systems with reliable three-phase power distribution
  • 1200A Aluminum Bus System - High-capacity aluminum bus construction ensures efficient power distribution with excellent conductivity and corrosion resistance
  • Single Socket Design - Accommodates one meter connection with factory A-B phase balance for accurate power measurement and billing
  • Seven-Jaw Configuration - Professional seven-jaw meter socket design provides secure meter connection and reliable electrical contact

Professional Installation & Protection

  • Lever Bypass Operation - Convenient lever bypass mechanism allows for safe meter maintenance and replacement without service interruption
  • Ringless Security Design - Enhanced security features protect against unauthorized access while maintaining professional appearance
  • UL Listed Certification - Meets rigorous safety standards for commercial electrical installations with professional quality assurance

Technical Specifications

Product Type: Meter Stack Module, Configuration: Three-Phase Commercial, Amperage: 400A, Bus Rating: 1200A Aluminum, Socket Quantity: 1 Socket, Phase Balance: Factory A-B, Jaw Configuration: Seven-Jaw, Voltage: 208Y/120V, Bypass: Lever Type, Security: Ringless, Dimensions: 52.63" H x 18.25" W x 8.75" D, Weight: 133 lbs, Certifications: UL Listed, Utility Approvals: Alabama Power, Phase Configuration: Three-Phase In/Three-Phase Out

Installation & Usage

  1. Verify electrical service requirements and ensure proper three-phase power supply compatibility
  2. Mount meter stack module in approved location following NEC and local electrical codes
  3. Connect incoming three-phase power lines to designated line terminals with proper torque specifications
  4. Install load-side connections to distribution equipment ensuring proper phase sequence
  5. Verify factory A-B phase balance and confirm proper seven-jaw meter socket alignment
  6. Test lever bypass operation and security features before final commissioning

Professional Applications

Ideal for:

  • Commercial Buildings - Office complexes, retail centers, and commercial facilities requiring professional power metering
  • Industrial Facilities - Manufacturing plants, warehouses, and industrial complexes with high-capacity power distribution needs
  • Multi-Tenant Buildings - Apartment complexes, condominiums, and mixed-use developments requiring individual metering
  • Utility Metering Systems - Electric utility installations requiring reliable commercial-grade metering infrastructure
  • Power Distribution Centers - Electrical service centers and distribution facilities with three-phase power requirements
  • Healthcare Facilities - Hospitals, medical centers, and healthcare facilities requiring dependable power metering
  • Educational Institutions - Schools, universities, and educational facilities with commercial electrical systems
  • Government Buildings - Municipal buildings, government facilities, and public infrastructure applications

Commercial Metering Advantage

The 37MM series represents Eaton's commitment to professional-grade metering solutions with advanced three-phase power distribution technology. The aluminum bus system provides superior conductivity and corrosion resistance, while the lever bypass mechanism ensures safe maintenance operations. Factory A-B phase balance guarantees accurate power measurement for reliable billing and energy management applications.

Why Choose Eaton Quality?

With over a century of electrical power management innovation, Eaton delivers unmatched reliability and performance in commercial metering solutions. Our UL Listed meter stack modules meet the highest safety standards and are trusted by electricians, electrical contractors, and utility professionals worldwide. From design to installation, Eaton provides the quality construction, advanced technology, and dependable performance that electrical professionals demand for critical power distribution and metering applications.

Manufacturer Resources

Product Specs

Certifications:
UL Listed
Product Height:
52.63 in
Product Length Depth:
8.75 in
Product Type:
Meter Stack
Product Weight:
133 lb
Product Width:
18.25 in
Utility Approvals:
AL : Alabama Power
Product Subgroup:
Meter Stack
Product Group:
Electrical
Department:
Electrical

Eaton 37MM140R1240 – Frequently Asked Questions

1) What is this Eaton 37mm meter stack module used for?
This is a three-phase commercial meter stack module designed for multi-tenant buildings and commercial facilities. It provides metering and bypass switching for individual tenant loads up to 400A with main bus capacity of 1200A.
2) What does the 400A lever bypass feature do?
The 400A lever bypass allows you to disconnect the meter for maintenance or replacement without shutting down power to other tenants. The lever provides a visible disconnect position for safety during meter work.
3) How does the aluminum bus construction benefit installation?
Aluminum bus reduces weight compared to copper while maintaining excellent conductivity. This makes handling easier during installation and reduces structural load requirements for wall mounting.
4) What does "factory A-B phase balance" mean?
Factory A-B phase balance means Eaton has pre-configured the phase rotation and balance at the factory. This ensures proper load distribution across phases and reduces field wiring errors during installation.
5) Can this module work with 208V three-phase systems?
Yes, this module is rated for 208Y/120V systems. The Y configuration provides 208V between phases and 120V from any phase to neutral, which is standard for commercial buildings.
6) What are the seven jaws used for?
The seven jaws provide secure connection points for the meter socket. This includes three hot phases, neutral, and additional grounding connections required for safe three-phase metering installations.
7) What does "ringless security" mean?
Ringless security eliminates the need for traditional meter rings while maintaining tamper resistance. This design speeds installation and reduces maintenance while preventing unauthorized meter removal.
8) How do you mount this meter stack module?
Mount to a properly rated wall or structural support using manufacturer-approved hardware. Verify wall can support the loaded weight and provide adequate clearances per NEC requirements. Check local utility specifications for mounting height.
9) What clearances are required around the module?
Follow NEC Article 110.26 for working space requirements. Typically need 3 feet in front for access and adequate space on sides for ventilation. Check local utility requirements as they may be more restrictive.
10) Can you stack multiple modules together?
Yes, 37mm modules are designed for stacking in multi-tenant configurations. Use proper bus connections between modules and ensure total load does not exceed the main bus rating of 1200A.
11) How do you connect the three-in three-out configuration?
Three-in connections receive power from the main bus or upstream modules. Three-out connections feed the tenant load through appropriate overcurrent protection. Follow the manufacturer wiring diagram for proper phase sequence.
12) What maintenance does this module require?
Inspect connections annually for tightness and signs of overheating. Test bypass operation periodically. Keep meter socket clean and check that security features function properly. Always coordinate with utility before any meter work.
How fast can I get the Eaton 37MM140R1240 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 37MM140R1240 come with a warranty?
Absolutely. The Eaton 37MM140R1240 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 37MM140R1240?
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
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