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| Part Number | 4-1437390-0 | 4-1437390-2 | 427-BU | 426-BU |
| Manufacturer | TE Connectivity AMP Connectors | TE Connectivity AMP Connectors | TE Connectivity AMP Connectors | TE Connectivity AMP Connectors |
| Series | 200, Buchanan | 200, Buchanan | 400, Buchanan | 400, Buchanan |
| Packaging | Bulk | Bulk | Bulk | Bulk |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Type | NEMA Open Construction | NEMA Open Construction | NEMA Open Construction | NEMA Open Construction |
| Mounting Type | Direct Mount | Direct Mount | Direct Mount | Direct Mount |
| Number of Positions | 2 | 2 | 2 | 2 |
| Number of Levels | 1 | 1 | 1 | 1 |
| Terminal - Width | 22.1mm | - | - | - |
| Termination Style | Tubular Screw | Screw with Captive Plate | Tubular Screw | Tubular Screw |
| Wire Gauge or Range - AWG | - | - | - | - |
| Wire Gauge or Range - mm² | - | - | - | - |
| Features | 85 A | 50 A | 225 A | 225 A |
| Housing Color | 600 V | 600 V | 600 V | 600 V |
| Current - IEC | 4-18 AWG | 8-18 AWG | 250MCM (kcmil)-6 AWG | 2/0-14 AWG |
| Voltage - IEC | - | - | - | - |
| Current - UL | - | - | - | - |
| Voltage - UL | - | - | Black | Black |
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