Meter Sockets

Austin Energy Approved Meter Sockets

Specifications for electric meter types by manufacturer are provided below.

Self-Contained Meter Enclosures
Meter Socket Description	Approved Manufacturers
1. Single Phase
A. 200 amp Self-Contained Meter Socket For services with a maximum manufacture nameplate handle(s) rating or breaker(s) less than or equal to 225 amps. Single phase, 3 Wire, CL200, 4 terminals, ring-less type and equipped with lever by-pass in accordance with AE specification E-1001 (pdf). 225 amp maximum breaker/disconnect. Applicable to commercial and non-commercial meter installations. Service Voltage: 120V, 277V, 120/240V, and 240/480V	Eaton/Durham 1006352C-CH UTE4213BCH 1006352C-SQD 1006352C 1006352C-MEP Milbank 4888-XL Siemens 40404-025F Texas Meter Device 601U43W1B41-B20A00
B. 200 amp Self-Contained Meter Socket For services with a maximum manufacture nameplate handle(s) rating or breaker(s) less than or equal to 225 amps. Single phase, 3 wire, CL200, 5 terminals, ring-less type equipped with lever by-pass in accordance with AE Specification E-1001 (pdf). 225 amp maximum breaker and disconnect. Applicable to commercial and non-commercial meter installations. Service Voltage: 120/208V and 480V For 120/208V service, for 5-terminal sockets, the 5th terminal shall* be factory installed by the manufacturer.* Kit for 5th terminal is unacceptable.	Eaton UTH 5213 CCH Midwest UGTH4213CMEP Milbank U4801-XL-5T9 Siemens 40405-025F Square D UTH5213T Texas Meter Device 601U43W1B51-B20A00
C. 320 amp Self-Contained Meter Socket For services with a maximum manufacture nameplate handle(s) rating or breaker(s) less than or equal to 350 amps. Single phase, 3 wire, CL320, 4 terminals, ring-less type equipped with lever by-pass in accordance with AE Specification E-1045 (pdf). 350 amp maximum breaker and disconnect. Applicable to commercial and non-commercial meter installations. For 120/208V service, for 5-terminal sockets, the 5th terminal shall* be factory installed by the manufacturer.* Kit for 5th terminal is unacceptable. Service Voltage: 120/240V	Eaton/Durham 1010468 1010468-CH 1010468-SQD 1010468-MEP UTH4336-9T-CH Milbank U4738-X-2-K3 Siemens 47704-02 Talon 48104-82CC Texas Meter Device 601U47W1B42-B32A00
D. 320 amp Self-Contained Meter Socket For services with a maximum manufacture nameplate handle(s) rating or breaker(s) less than or equal to 350 amps. Single phase, 3 wire, CL320, 5 terminals, ring-less type equipped with lever by-pass in accordance with AE Specification E-1045 (pdf). 350 amp maximum breaker and disconnect. Applicable to commercial and non-commercial meter installations. Service Voltage: 120/240V	Milbank U4738-X-2/K3-5T9 Siemens 47705-02FL Texas Meter Device 601U47W1B52-B32A00
2. Three Phase
A. 200 amp Self-Contained Meter Socket For services with a maximum manufacture nameplate handle(s) rating or breaker(s) less than or equal to 225 amps Three phase, 4 wire, CL200, 7 terminals, ring-less type and equipped with lever by-pass in accordance with AE specification E-1002 (pdf). 225 amp maximum breaker/disconnect. Applicable to commercial and non-commercial meter installations. Service Voltage: 120/208V, 120/240V, and 277/480V	Eaton/Durham 1006353C 1006353C-CH 1006353C-SQD 1006353C-MEP Milbank U4788-XL Siemens 42507-025 Texas Meter Device 601U43W1B71-B20A00
B. 320 amp Self-Contained Meter Socket For services with a maximum manufacture nameplate handle(s) rating or breaker(s) less than or equal to 350 amps Three phase, 4 wire, CL320, 7 terminals, ring-less type and equipped with lever by-pass. AE Specification (pending). 350 amp maximum breaker/disconnect. Applicable to commercial and non-commercial meter installations. Service Voltage: 120/208V, 120/240V, and 277/480V	Please note: Three Phase CL320 meter enclosures are not approved for use at this time.
3. Modular Metering: Meter pak equipment and modular metering equipment (Single-Phase or Three-Phase application)
Modular Metering Equipment in accordance with AE Specification E-1589 (pdf) Customer must provide the following: Modular Metering Request Form (pdf) Highlighted Equipment Cut Sheets Approved ESPA(s) Electrical Riser Diagram/ One-Line Site Plan	Customer shall obtain written approval from Austin Energy Advanced Metering Systems & Engineering prior to procurement.

Transocket(s) Instrument-Rated Meter Enclosures
Meter Socket Description	Approved Manufacturers
1. Single Phase
For services with a maximum manufacture nameplate handle(s) rating or breaker(s) of 400 amps or 600 amps Instrument Rated (IR) Transocket. Single phase, 6 terminal meter socket prewired to a 6 pole test switch, (2) 600:5, bar-type Current Transformers (CTs) with a rating factor (RF) of 1.5 @ 55 deg C., with factory-installed double lug connectors. Service Voltage: 120/240V, 600 amp maximum disconnect only	Milbank S3831-XT-600-51-AE Texas Meter Device TMD-600-4-AE
2. Three Phase
For services with a maximum manufacture nameplate handle(s) rating or breaker(s) of 400 amps or 600 amps Instrument Rated (IR) Transocket. Three phase, 13 terminal meter socket prewired to a 10 pole test switch, (3) 600:5, Bar-type Current Transformers (CTs) with a rating factor (RF) of 1.5 @ 55 deg C., with factory-installed double lug connectors. Service Voltage: 120/208V, 120/240V, and 277/480V, 600 amp maximum disconnect only For 277/480V services, the customer is required to purchase a Voltage Transformer (VT) enclosure, VT Pack, and a VT Harness. Austin Energy will install the VT Pack and VT Harness.	Milbank S2674-XT-600-91-AE Texas Meter Device TMD-600-9-AE

Instrument-Rated Meter Enclosures
Meter Socket Description	Approved Manufacturers
1. Single Phase
For services with a maximum manufacture nameplate handle(s) rating or breaker(s) greater than 600 amps Instrument Rated (IR) Socket. Single phase, 3 wire, 6 terminal with prewired test switch in accordance with AE Specification E-1565 (pdf). Applicable to commercial and non-commercial IR meter installations. Service Voltage: 120/240V	Milbank UC-4666-0-WCB-21 Eaton/Durham STL6-1A433-CH STL6-1A433-SQD STL6-1A433 STL6-1A433-MEP Tesco 9070577 Texas Meter Device 602U3010A6-1555
2. Three Phase
For services with a maximum manufacture nameplate handle(s) rating or breaker(s) greater than 600 amps A. Instrument Rated (IR) Socket. Three phase, 4 wire, 13 terminals with prewired test switch in accordance with AE specification E-1566 (pdf). Applicable to commercial and non-commercial IR meter installations. Service Voltage: 120/208V and 120/240V	Milbank UC4662-0-WCB-21-AE Eaton/Durham STL13-1A120-CH STL13-1A120-SQD STL6-1A120 STL13-1A120-MEP Tesco 9070451 Texas Meter Device 602U3010A13-1556
B. Instrument Rated (IR) Socket. Three phase, 4 wire, 13 terminals with prewired test switch with provisions for a customer provided Voltage Transformer (VT) Pack. In accordance with AE Specification E-1567 (pdf). Applicable to commercial and non-commercial IR meter installations. Austin Energy will install the customer provided Voltage Transformer (VT) pack – required for 277/480V services.	Milbank SC-4832-XL-WCB-21 Texas Meter Device 622-8085A13-1753

New orders for ALL metering equipment have extremely long lead times according to the manufacturers and vendors. This is due to labor and material shortages that have affected production efforts nationwide. While this has been going on for about two years as of 2023, it is highly recommended to place your orders for ALL the necessary metering equipment as soon as possible.

Temporary Workaround Process

If you are unable to locate the required metering equipment, please:

Email Austin Energy Distribution Metering to request approval for a proposed replacement part.

Approvals on replacements are temporary until stock levels have increased in local supply warehouses.

Contact Us

Austin Energy Distribution Metering Operations

Contact for: Metering equipment and information, and general metering questions

Email: Austin Energy Distribution Metering Operations

Austin Energy Distribution Metering Dispatch

Contact for: CT inspections

Email: AE DMO Dispatch

Advanced Metering Systems and Engineering

Contact for: Modular metering and requests, solar variances, metering specifications, and general advanced metering questions

Email: Austin Energy Advanced Metering Engineering

Date last reviewed or modified: 07/11/2023