The CN4ST6404 is a Type 4/3R mild steel splitter trough for 4-wire power distribution, rated 400/400 A (CU/AL) with factory-installed splitter blocks. It is aimed at electricians, contractors and facilities teams who need a gasketed, hinged-door trough to split a service into multiple branch taps indoors or outdoors.
The enclosure measures 72.00 in (1829 mm) high, 10.00 in (254 mm) wide and 6.00 in (152 mm) deep. The drawing shows a 71.97 x 9.97 in door, a 70.36 x 8.49 in door opening and an included 70.17 x 8.17 in inner panel.
Construction is formed and spot welded 14 gauge steel (the series uses 14 gauge when the width is 8 in or more), with smooth, continuously welded seams ground smooth and a formed lip on the enclosure to exclude flowing liquids and contaminants. It uses a seamless poured-in-place gasket. The cover and enclosure are finished in recoatable smooth ANSI 61 gray powder coating; the inner panel is finished in white powder coating and mounts on collar studs.
Door latches use a quarter-turn slot that requires a tool to open. Hinges are 304 stainless steel with stainless steel hinge pins, and the doors can be removed for modifications and are interchangeable. A hardware kit with panel mounting nuts and sealing washers for the wall mounting holes is included. The trough is CSA Certified Type 3R, 12, 4 and complies with IEC 60529, IP66. The series is designed for distribution of up to 600 A (max) service at 600 V max, with 75 °C conductor ampacity permitted.
Optional grounding kit CGK400 and splitter block reference CSBL400 apply to this size. The 3-wire version of the same size is CN4ST6403.
| Series | CN4ST Series |
| Door Style | Hinge Door with Quarter Turn |
| Product Type | Type 4/3R Mild Steel Splitter Trough |
| 3-Wire Equivalent | CN4ST6403 |
| Wiring Configuration | 4 Wire |
| Depth | 6.00 in (152 mm) |
| Width | 10.00 in (254 mm) |
| Height | 72.00 in (1829 mm) |
| Door Size (Drawing) | 71.97 in x 9.97 in |
| Door Opening (Drawing) | 70.36 in x 8.49 in |
| Inner Panel Size (Drawing) | 70.17 in x 8.17 in |
| Back Hole Pattern (Drawing) | 70.50 in x 8.50 in |
| Back Hole Diameter (Drawing) | 0.50 in |
| Overall Depth, Side View (Drawing) | 6.84 in |
| CU/AL Amps | 400/400 |
| Splitter Blocks | Factory installed |
| Conductor Ampacity | 75° C conductor ampacity permitted |
| Series Application | Distribution of up to 600 A (max) service (600V max) using either 3 or 4 wires |
| Optional Grounding Kit | CGK400 |
| Splitter Block Reference | CSBL400 |
| Part Number | CN4ST6404 |
| Lip | Formed lip on enclosure to exclude flowing liquids and contaminants |
| Doors | Easily removed for modifications and interchangeable |
| Gauge | 14 gauge (series: 16 gauge; 14 gauge when width is 8" or more) |
| Seams | Smooth, continuously welded seams ground smooth |
| Gasket | Seamless poured-in place gasket |
| Hinges | 304 stainless steel |
| Material | Steel, formed and spot welded |
| Hinge Pins | Stainless steel |
| Inner Panel | Included; mounts on collar studs |
| Door Latches | Quarter turn slot requiring use of tool for opening |
| Hardware Kit | Panel mounting nuts and sealing washers for wall mounting holes |
| Door Stiffeners | Provided where required for increased strength and rigidity; permit additional mounting options |
| Inner Panel Finish | White powder coating |
| Available Accessories | Quarter Turn Inserts and Keys; Mounting Foot Kit; Rear Hole Plugs; Replacement Hinge Pins; Quarter Turn Assemblies; Padlock Adaptor; Splitter Blocks; Grounding Kits |
| Enclosure & Cover Finish | Recoatable smooth ANSI 61 gray powder coating |
| CSA Rating | CSA Certified Type 3R, 12, 4 |
| Ingress Protection | Complies with IEC 60529, IP66 |
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The ordering table lists 400/400 A under CU/AL for the CN4ST6404. The series is designed for distribution of up to 600 A (max) service at 600 V max, with 75° C conductor ampacity permitted.
It is the 4-wire version. The 3-wire version of the same size is CN4ST6403.
It is CSA Certified Type 3R, 12, 4 and complies with IEC 60529, IP66.
Yes. Splitter blocks are factory installed (splitter block reference CSBL400) and the inner panel is included, mounting on collar studs with a white powder-coat finish. The grounding kit, CGK400, is optional.
The hinged door uses quarter-turn latches with a slot that requires a tool to open. Hinges are 304 stainless steel with stainless steel hinge pins, and doors can be removed for modifications and are interchangeable.
The ordering table lists 72.00 in (1829 mm) H x 10.00 in (254 mm) W x 6.00 in (152 mm) D. The drawing shows a 71.97 x 9.97 in door and a 70.36 x 8.49 in door opening.
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