Branch Feeder Units

Class 8998

Overview

This section covers Model 4 Motor Control Center (MCC) unit availability during product obsolescence. All Model 4 orders can be completely defined by catalog type and modifications. Layout sheets and data sheets are not required for order entry.

Note the standard features of the unit. Please refer to footnotes for important information.

Model 4 structures are no longer available. Transition sections can be provided to match an existing Model 4 MCC to a Model 6 MCC.

Model 4 to Model 6 Transition

Provides transition from a Model 4 to a Model 6 MCC. The transition requires a 12-inch extension on the first section of the Model 6 lineup. The transition section must be ordered with at least one Model 6 section and cannot ship separately. The Model 6 bus must be of equal or greater ampacity than the Model 4 bus.The transition section includes all required splice bars. (Reference the Model 6 Motor Control Center Pricing Guide.)

Please supply original Model 4 factory order number, basic configuration, and Model 4 bus amperage, material, and plating at time of order.

Compatible structure depths include:

  • 15-inch deep Model 6 to 14-inch deep Model 4

  • 20-inch deep Model 6 to 20-inch deep Model 4

Branch Feeder Units and Modifications

Circuit Breaker Branch Feeder Units [1]

No. of Poles

Trip Rating

Breaker Frame Type

Unit Type No.

Space
Factor

3

15

FH

BW423

1

20

BW424

30

BW425

40

BW429

50

BW428

60

FH

BW426

70

BW450

80

BW451

90

BW452

100

BW427

Dual Mounted Units

No. of Poles

Trip Rating

Breaker Frame Type

Unit Type No.

Space Factor

3

15/15

FH/FH

BW453

1-1/2

20/20

BW454

30/30

BW455

50/50

BW456

60/60

FH/FH

BW457

100/100

BW458

Miscellaneous Items

Unit

Description

K401[2]

1/2 S.F. Blank Plate

K402[2]

1 S.F. Blank Plate

K404[2]

2 S.F. Blank Plate

Fusible Switch Branch Feeder Units—3-pole [3]

Voltage

Max. Fuse Size

Unit Type No.

Space
Factor

250

30

KW408

1

60

KX409

1

100

KY409

1

200

KZ409

2-1/2

600

30

KW409

1

60

KX410

1

100

KY410

1

200

KZ410

2-1/2

note

Fusible branch feeders 30-200 amp using Class H fuse clips have a short circuit rating of 10,000 AIR @ 600 V. If Class R fuse clips are required, order field installabe kit from Digest.

Starter Unit Options

Description

Form No.

Start-Stop PB with 1 Pilot light — Red (On)[4]

AP

Forward-Reverse-Stop PB with 2 Pilot Lights[5]

A1PP

High-Low-Stop PB with 2 Pilot Lights [6]

A2PP

Hand-Off-Auto SS with 1 Pilot Light — Red (On)[4]

CP

1 Pilot Light only — Red (On)[4]

P

2 Pilot Lights — Red (On)[5]

PP

Miscellaneous Units

MT Units (Undrilled Panel and Hinged Door)

Unit Type No.

Space Factors

Panel Dimensions[7]

MT414

1

11-3/4 in. H x 13-5/8 in. W

MT415

2

22-1/3 in. H x 13-5/8 in. W

Footnotes

  1. All branch circuit breakers are thermal magnetic with high interrupting Form Y532.
  2. Unit support pan included.
  3. Fuses not included.
  4. Full Voltage Non-Reversing units only.
  5. Reversing units only.
  6. Two-Speed units only.
  7. Dimensions are in inches — Depth from door to panel is 7.50 inches.

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