Abb TMPR312140RB Meter Stack 400A 3-phase Socket Breaker

Product Description

The ABB TMPR312140RB is a meter stack assembly combining a 400-amp ringless meter socket with an integrated 400-amp 3-pole breaker in a single enclosure. Rated for 1200-amp bus capacity, this unit serves 3-phase electrical distribution applications where metering and overcurrent protection must be housed together. The 7-terminal configuration supports proper conductor landing for service entrance wiring. Licensed electricians install this type of assembly at the service point in commercial and multi-tenant residential applications where the utility requires a ringless socket design.

This meter stack is suited for 3-phase service entrance installations in commercial buildings, light industrial facilities, and multi-family residential developments. The ringless socket design is specified by many utilities that require a socket the meter can be installed in without a locking ring. The integrated 3-pole 400-amp breaker provides the main disconnect function in a compact, combined enclosure, reducing the number of individual components required at the service equipment location.

Key Features

• Ringless meter socket accepts utility meters without a locking ring
• Integrated 400-amp 3-pole breaker provides main overcurrent protection
• 1200-amp rated bus capacity for 3-phase service entrance applications
• 7-terminal layout supports proper service entrance conductor connections
• Single enclosure design consolidates metering and disconnect into one unit

Compatibility

Designed as an OEM-style meter stack for 3-phase commercial and multi-family service entrance installations requiring a ringless socket with integrated breaker disconnect.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local utility requirements. De-energize the service and confirm with the utility before any work on the service entrance enclosure. Verify that conductor sizing, conduit fill, and grounding meet NEC service entrance requirements before energizing. Consult the utility for ringless socket approval and meter installation procedures before placing the assembly into service.

Technical Specifications

• Socket Type: Ringless
• Socket Rating: 400 amps
• Breaker Rating: 400 amps, 3-pole
• Bus Capacity: 1200 amps
• Phase: 3-phase
• Terminal Count: 7
• UPC: 783164320770

Standard Information

• Brand: ABB
• Manufacturer Part Number: TMPR312140RB