The CN4ST4404 is a Type 4/3R mild steel splitter trough from the CN4ST Series, built for four-wire (4 wire) service and a 400 A rating for both copper and aluminum conductors. It is intended for electricians, panel builders and facilities teams who need to split a feeder into multiple taps inside a gasketed, hinged enclosure. The series is designed for distribution of up to 600 A (max) service at 600V max using either 3 or 4 wires, and 75° C conductor ampacity is permitted. If you need the 3-wire version of this same size, the ordering table pairs it with CN4ST4403.
The enclosure measures 48.00 in (1219 mm) high, 10.00 in (254 mm) wide and 6.00 in (152 mm) deep per the series ordering table, and is formed and spot welded from 14 gauge steel (the series uses 16 gauge, moving to 14 gauge when width is 8" or more). Seams are continuously welded and ground smooth, a formed lip helps exclude flowing liquids and contaminants, and a seamless poured-in-place gasket seals the door. Splitter blocks are factory installed; this size references splitter block CSBL400.
The hinged door uses quarter turn slot latches that require a tool to open, and doors can be removed for modifications and are interchangeable. Hinges are 304 stainless steel with stainless steel hinge pins. An inner panel finished in white powder coating is included and mounts on collar studs, while the cover and enclosure carry a recoatable smooth ANSI 61 gray powder coat. A hardware kit with panel mounting nuts and sealing washers for the wall mounting holes is included.
The CN4ST Series is CSA Certified Type 3R, 12, 4 and complies with IEC 60529, IP66. The manufacturer's part page lists no shipping weight or UPC for the CN4ST4404; dimensions here come from the ordering table and drawing. For equipment grounding, the optional grounding kit for this size is CGK400.
| Hardware Kit | Panel mounting nuts and sealing washers for wall mounting holes |
| Inner Panel Mounting | Collar studs provided |
| Back Mounting Hole Spacing | 46.50 in x 8.50 in |
| Back Mounting Hole Diameter | 0.50 in |
| Series | CN4ST Series |
| Wiring | 4 Wire |
| Door Style | Hinge Door with Quarter Turn |
| Inner Panel | Included |
| Product Type | Type 4/3R Mild Steel Splitter Trough |
| Door Size | 47.97 in x 9.97 in |
| Door Opening | 46.36 in x 8.49 in |
| Enclosure Depth | 6.00 in (152 mm) |
| Enclosure Width | 10.00 in (254 mm) |
| Enclosure Height | 48.00 in (1219 mm) |
| Inner Panel Size | 46.17 in x 8.17 in |
| Drawing Overall Width | 10.00 in |
| Drawing Overall Height | 48.00 in |
| Drawing Enclosure Depth | 6.00 in |
| Side View Overall Depth (Drawing) | 6.84 in |
| Splitter Blocks | Factory installed |
| Ampacity (CU/AL) | 400/400 A |
| Conductor Temperature | 75° C conductor ampacity permitted |
| Series Service Rating | Up to 600 A (max) service, 600V max, 3 or 4 wires |
| Splitter Block Reference | CSBL400 |
| Optional Grounding Kit | CGK400 |
| Available Series Accessories | Quarter Turn Inserts and Keys, Mounting Foot Kit, Rear Hole Plugs, Replacement Hinge Pins, Quarter Turn Assemblies, Padlock Adaptor, Splitter Blocks, Grounding Kits |
| Part Number | CN4ST4404 |
| 3 Wire Part No. | CN4ST4403 |
| 4 Wire Part No. | CN4ST4404 |
| Doors | Easily removed for modifications; interchangeable |
| Seams | Smooth, continuously welded seams ground smooth |
| Gasket | Seamless poured-in place gasket |
| Hinges | 304 stainless steel |
| Latching | Quarter turn slot latches requiring use of tool for opening |
| Material | Mild steel, formed and spot welded, 14 gauge (series: 16 gauge; 14 gauge when width is 8" or more) |
| Hinge Pins | Stainless steel |
| Enclosure Lip | Formed lip to exclude flowing liquids and contaminants |
| Door Stiffeners | Provided where required for increased strength and rigidity; also permit additional mounting options |
| Inner Panel Finish | White powder coating |
| Cover & Enclosure Finish | Recoatable smooth ANSI 61 gray powder coating |
| CSA | CSA Certified Type 3R, 12, 4 |
| Ingress Protection | Complies with IEC 60529, IP66 |
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The ordering table lists 400/400 A CU/AL for the CN4ST4404, i.e. 400 A (copper and aluminum). The CN4ST Series is designed for distribution of up to 600 A (max) service, 600V max, with 75° C conductor ampacity permitted.
It is the 4-wire version. The matching 3-wire part at the same size and rating is CN4ST4403.
The series ordering table gives 48.00 in (1219 mm) H x 10.00 in (254 mm) W x 6.00 in (152 mm) D. The drawing shows a door opening of 46.36 in x 8.49 in and an inner panel of 46.17 in x 8.17 in.
The CN4ST Series is CSA Certified Type 3R, 12, 4 and complies with IEC 60529, IP66. It has a seamless poured-in-place gasket and a formed lip to exclude flowing liquids and contaminants.
Splitter blocks are factory installed (reference CSBL400), and an inner panel is included, mounted on collar studs. A hardware kit with panel mounting nuts and sealing washers for the wall mounting holes is also included. Grounding kit CGK400 is optional.
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