3 Phase Main Devices (Busway Side Tap)

Class 4162 / Refer to Catalog 4100CT0701

EZM Main with Busway Side Tap

EZ Meter-Pak™ metering equipment is available for use in high rise applications for connection to 800–5000 A I-Line or I-Line II plug-in busway installed as a vertical riser. Three phase only EZM main devices in the form of a main circuit breaker or main fusible switch are available with an integral busway tap extending from the right or left side of the main device and phased to align with the busway for either neutral front or neutral back installations.

Busway Mains, 3Ø only (Indoor only) ordering instructions:

Step 1: Determine height to center line of busway plug-in opening, check local utility requirements for minimum and maximum meter socket heights.

Step 2: Determine side of EZM main section for busway tap to extend from (busway tap is an integral part of the main and extends to the left or right on the EZM device as viewed from the front).

Step 3: Check phasing of busway riser to insure that it matches phasing of busway tap on main section (indicated as neutral front or neutral back as viewed from the front).

Step 4: Select Cat. No. from tables below.

Step 5: Busway main devices are build to order specials and require 4 to 6 weeks for delivery.

EZM Busway Side Tap Mains Devices

Number Segment

Character

Description

EZM

3

800

CB

NF

BTR

Device Name

EZM

EZ Meter-Pak Meter Center

 

Service Feed

3

3Ph, 4W

Mains Rating

400 A

600 A

800 A

1000 A

1200 A

Main Type

CB

Main Circuit Breaker

FS

Main Fusible Switch

GB

Main Circuit Breaker (65 kAIC)

JB

Main Circuit Breaker (100KAIC)

Neutral Position

NF

Neutral Front

NB

Neutral Back

Bus Tap Location

BTL

Bus Tap Left

BTR

Bus Tap Right

This table is for interpreting existing part numbers only. All possible combinations are not available.

1200 A EZM Mains with Busway Side Tap (Three Phase Only—Note positioning left or right below)

Ampere Rating

Width
(in.)

Horizontal Cross Bus Rating

Busway to LEFT of EZM Metering Equipment Lineup

Busway to RIGHT of EZM Metering Equipment Lineup

Neutral Front

Neutral Back

Neutral Front

Neutral Back

Main Circuit Breaker with Busway Tap

65,000 RMS Symmetrical Amperes Maximum Short Circuit Current Rating

 400

18.66

400 A Al

EZM3400CBNFBTL

EZM3400CBNBBTL

EZM3400CBNFBTR

EZM3400CBNBBTR

 600

18.66

600 A Al

EZM3600CBNFBTL

EZM3600CBNBBTL

EZM3600CBNFBTR

EZM3600CBNBBTR

 800

18.66

800 A Al

EZM3800CBNFBTL

EZM3800CBNBBTL

EZM3800CBNFBTR

EZM3800CBNBBTR

1000

18.66

1000 A Al

EZM31000CBNFBTL [1]

EZM31000CBNBBTL [1]

EZM31000CBNFBTR [1]

EZM31000CBNBBTR [1]

1200

23.36

1200 A Cu

EZM31200GBNFBTL [1]

EZM31200GBNBBTL [1]

EZM31200GBNFBTR [1]

EZM31200GBNBBTR [1]

100,000 RMS Symmetrical Amperes Maximum Short Circuit Current Rating

1200

23.36

1200 A Cu

EZM31200JBNFBTL [1]

EZM31200JBNBBTL [1]

EZM31200JBNFBTR [1]

EZM31200JBNBBTR [1]

Main Fusible Switch with Busway Tap Requires Class T (300 Vac) Fuses - Order Separately

100,000 RMS Symmetrical Amperes Maximum Short Circuit Current Rating

 400

18.66

400 A Al

EZM3400FSNFBTL

EZM3400FSNBBTL

EZM3400FSNFBTR

EZM3400FSNBBTR

 600

18.66

600 A Al

EZM3600FSNFBTL

EZM3600FSNBBTL

EZM3600FSNFBTR

EZM3600FSNBBTR

 800

18.66

800 A Al

EZM3800FSNFBTL

EZM3800FSNBBTL

EZM3800FSNFBTR

EZM3800FSNBBTR

1200

22.36

1200 A Cu

EZM31200FSNFBTL [1]

EZM31200FSNBBTL [1]

EZM31200FSNFBTR [1]

EZM31200FSNBBTR [1]

note

Dimensions shown position the centerline of top meter socket of a 125 A, 5-Gang or 6-Gang branch unit at 72" above floor level. Check with utility to meet local requirements.

Busway Transition Section

EZM busway transition section provides no overcurrent protection for the downstream EZM branch units.

Tenant main circuit breakers in these branch units must be selected as “fully rated” equipment. (Examples: QO for 10 kA, QO-VH for 22 kA or QOH for 42 kA.)

EZM Busway Transition Sections (3Ø only)

Ampere Rating

I-Line Busway location

Neutral Front

Neutral Back

Width (in.)

1200

RIGHT of EZM Transition Section

EZM3BUSRF

EZM3BUSRB

12.00

1200

LEFT of EZM Transition Section

EZM3BUSLF

EZM3BUSLB

12.00

EZM Main with Center-Mounted Busway Tap

The EZM Main with center-mounted busway tap is a space-saving design for high rise applications that is installed as an integral component of the vertical riser busway and allows standard EZM branches to be mounted from both sides. See online digest updates for availability or contact your local field sales office for additional information

Footnotes

  1. Requires use of branch units supplied with 1200 A horizontal cross bus.

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