Siemens WMM42125RJB Power Meter Module 125A 4-gang

Product Description

The SIEMENS WMM42125RJB is a 125-amp, 4-gang power meter module designed for use in residential and light commercial electrical distribution systems. This meter module integrates with compatible load centers to provide individual metering of multiple dwelling units or separately metered services from a single enclosure assembly. Rated at 125 amps, it supports standard meter socket configurations across four gang positions. Licensed electricians handle installation and termination, working within the requirements of the National Electrical Code (NEC). The unit is built for permanent, in-wall or surface-mounted service entrance applications where space-efficient multi-tenant metering is required.

The WMM42125RJB is suited for residential multi-unit applications such as duplexes, fourplexes, apartment buildings, or any installation requiring separate metering for multiple occupants within a single meter stack assembly. It is intended for use with Siemens WMM-series load center combinations and is a practical solution for utility-ready metering in new construction and retrofit service entrance upgrades.

Key Features

• 125-amp rating supports standard residential and light commercial service requirements
• 4-gang configuration allows up to four individual meter positions in one assembly
• Designed for integration with compatible Siemens WMM-series meter-main combinations
• Compact footprint supports efficient service entrance layouts where space is limited
• Built for permanent installation in utility-metered multi-unit residential applications

Compatibility

Designed for use with Siemens WMM-series power meter module assemblies in multi-gang, multi-tenant residential and light commercial service entrance configurations. Consult Siemens product documentation to confirm compatibility with specific load center combinations before installation.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the NEC and applicable local codes. De-energize the utility service and verify absence of voltage before handling any meter socket components or making terminations. Do not exceed the 125-amp continuous rating of the module. Coordinate with the local utility for meter installation, sealing, and inspection requirements, as utility access and approval are typically required for service entrance metering equipment.

Technical Specifications

• Amperage Rating: 125 amps
• Number of Gangs: 4
• Dimensions (L x W x H): 50.787 inches x 13.780 inches x 9.843 inches
• Weight: 73.149 pounds
• UPC: 04089214740

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: WMM42125RJB