Mechanical & Onboard
MU / COMM
27-Point MU/COMM Jumper Cables
27-point jumper assemblies for connections between coupled locomotives, locomotive-to-car, and car-to-car. MU cables carry traction-motor signals, dynamic-brake commands, and indications; COMM cables carry car-control and communication signals throughout the train.
Photo 1 of 3
Capabilities
- Custom lengths, colors, and configurations available
- Flexible cable construction for handling in confined spaces and cold weather
- Mechanical keying and color coding help align MU and COMM connections
- Contacts can be replaced from the front of the connector
- Replacement conductor-pin kits available
- Connector design rated for more than 3,000 mating cycles
Technical details
| Connection | 27-point MU or COMM |
|---|---|
| Length | Configured to customer requirements |
| Nominal voltage | 74 V DC (ungrounded) |
| Connector rated current | 30 A (600 V) |
| Insulation resistance | 2 MΩ at 500 V DC |
| Dielectric strength | 1500 V AC |
| Ambient temperature | −50 to 90 °C (−58 to 194 °F) |
| Relative humidity | 5–100% |
| Mating / unmating force | 54 ± 10 lb |
| Housing | Powder-coated aluminum alloy |
| Contacts | Silver-plated copper alloy |
| Conductor material | Tin-coated copper |
| Wire gauges | 10, 12, and 14 AWG |
LET’S TALK ABOUT YOUR APPLICATION