Skip to main content

Main Breaker Modules

 ReliaMod Modular Metering - Main Breaker Modules

All ReliaMod™ main breaker modules leverage ABB circuit breaker technology to provide a single point of disconnect and overcurrent technology. Making the main modules suitable for service entrance applications.

All ReliaMod main modules also come with N3R outdoor enclosures, horizontal bussing, and connectors to allow meter modules to be added to the left and/or right of the unit depending on the application. Ensuring maximum flexibility to accommodate a wide range of applications.

Features and benefits

  • Main breaker modules include UL489, standard 80% rated circuit breakers
  • EUSERC main breaker modules have an integrated pull box and compression lug landing pads to comply with EUSERC requirements
  • All mains are required to be center feed only when the main breaker is greater than horizontal bus amps
  • All mains are offered with short circuit ratings through 100,000 amps RMS symmetrical
  • Series ratings are available from main breakers to tenant breakers (See 1SQC930152D0228 / DET-008 for more information on series ratings)
  • Interchangeable single and three-phase main and meter modules
  • Shunt trips are available for field installation across all main breakers (400A through 2000A)
  • Flexible lug sizes through 750kcmil across almost all main modules
  • RELT (Reduced Energy Let Through) is standard on all main breakers 1200A and above to comply with NEC 240.87 arc flash maintenance requirements

Technical specifications

  • Main breaker ampere ratings - 400, 600, 800, 1000, 1200, 1400, 1600, 2000
  • Single-phase, three-wire, 120/240V AC; three-phase, four-wire 120/208Y applications, and three-phase in/out, 240 Volt max delta systems

Certifications and standards

UL Listed, 1-phase and 3-phase


  • Multi-family apartments
  • Multi-family mixed use
  • Light commercial