Model 4

Square D motor control centers are an ideal option for clustering electric motor control in a compact setup. The standing sections house control units, wire networks and busses for power distribution. These rebuilt motor control centers house components like combination motor starters, branch feeder devices, lighting panel boards, and other devices each in its own isolated space.

Please check out all the information below.

• 600v AC  Max

• 3 Phase, 3 Wire or 3 Phase, 4 Wire

• Frequency: 50 or 60Hz

• 600-1800A Horizontal Bus

• 300-600A Vertical Bus

• 22K, 42K, and 65KA Symmetrical Bus Bracing

• Maximum 1800A Main Breaker

• Maximum 1800A Disconnect

• NEMA Size 1-7 Motor Starters

• NEMA Class I Type A, B, or C, and NEMA Class II Type B or C

• Track Mounted or Pull Apart Terminals

• NEMA 1, Gasketed 1, 2, 3R, or 12 Enclosures

• 20 Inch Standard Width

• 28 and 32 Inch Available Widths

Combination Starter Unit - Line Voltage

The reconditioned Square D combination starters mount in standard 20" by 14" enclosure. Please contact us for availability and specifications on our large selection of Square D Model 4 motor control center units.

FUSES
 

Combination Starter Unit - Mag Gard Circuit Breaker
Non - Reversing			Reversing
EC-401	ED-401	EG-404	FC-401	FF-404	FH-403
EC-407	EE-403	EH-403	FC-402	FG-403	FH-404
EC-402	EF-404	EH-404	FD-401	FG-404	FJ-401
EC-408	EG-403	EJ401	FE-403

Combination Starter Unit - Fusible Switch
Non - Reversing			Reversing
NC-401	NE-408	NG-404	OC-401	OD-408	OG-404
NC-402	NE-406	NG-405	OC-402	OD-406	OG-405
NC-403	NE-409	NH-402	OC-403	OD-409	OH-402
ND-401	NF-407	NJ-401	OD-401	OF-407	OJ-401
ND-403	NF-408		OD-403	OF-408

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Two Speed Starter Unit - Line Voltage Constant or Variable Torque

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Two Speed Starter Unit - Line Voltage Constant Horsepower

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Reduced Voltage Starter Unit - Part Winding, Two Step

Rebuilt Square D Reduced Voltage Starter Units are made of two instantaneous trip magnet circuit breakers with electrical interlocking for circuit breaker or a disconnect device with a set of fuses for each motor winding, plus two starters, one 4 pole, one 2 pole for sizes 1PW and 2PW, or two 3-pole starters for sizes 3PW-6PW.

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Reduced Voltage Starter Units - Autotransformer, Closed Transition

Autotransformer starters have to be placed at the bottom of 7 space factor high sections. Size 5, 6, and 7 starters are mounted in Style VI sections which utilize fully the width and height of the vertical sections.

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Distribution Transformer with Primary Disconnect

Square D Distribution Transformers come with a primary FA or KA molded case thermal magnetic circuit breaker or a switch and Gould-Shawmut fuse combination. Standard transformers are 150ºC rise transformers, and 115ºC are available as well.

Single phase transformers 15KVA and larger, as well as all three phase transformers, require a Style IV section. A 20" deep section is required for single phase transformers and three phase transformers.

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Incoming Main or Branch Feeder Unit

Square D Feeder Units are available for 3Ø3W and 3Ø4W connections. To get 3Ø4W a neutral lug is needed, wired to the 4th horizontal bus. FA, KA, and 200A and smaller switches can be placed anywhere in the section.

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Dual Mounted Branch Feeder Unit

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Power Factor Correction Capacitor

Square D Power Factor Correction Capacitors are environmentally safe and contain fuses for protecting the capacitor. The capacitors contain discharge resistors, required by the NEC, have a maximum of 7.5 KVAR per can at 480V/600V and 2.5 KVAR at 240V. Three cans will fit in each space factor.

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Incoming Main Feeder Provisions

Square D main lug compartments include a hinged door, and card holder. Lugs are tin plated aluminum suited for copper or aluminum conductors. Multiple compartments are needed for horizontal bus over 600A.

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Incoming Horizontal Bus Feeder Provisions

Square D I-LINE feeder busway compartments are located at the top of a section under the horizontal wire trough. I-LINE busways should be positioned edgewise A, B, C front to back to the control cetner.

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Current Limiting Reactor Sections

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