Phoenix PLC-BSC- 24UC/21 Relay Socket
The Phoenix PLC-BSC- 24UC/21 Relay Socket (Part No: 2966029 ) offers a Screw connection method, 0.14 mm² ... 2.5 mm² conductor cross section rigid, 0.14 mm² ... 2.5 mm² conductor cross section flexible, DIN rail mounting mounting type. Manufactured by Phoenix under the Phoenix Relay Socket category, this model belongs to the Phoenix PLC Series.

| Brand | Phoenix Contact |
| Product Type | Relay Socket |
| Model Number | PLC-BSC- 24UC/21 |
Phoenix PLC-BSC- 24UC/21 Relay Socket – Technical Specifications
| Specification | Value |
|---|---|
| Product type | Relay socket |
| Product family | PLC-INTERFACE |
| Connection method | Screw connection |
| Stripping length | 8 mm |
| Screw thread | M3 |
| Conductor cross section rigid | 0.14 mm² ... 2.5 mm² |
| Conductor cross section flexible | 0.14 mm² ... 2.5 mm² |
| Width | 6.2 mm |
| Height | 80 mm |
| Color | gray (RAL 7042) |
| Ambient temperature (operation) | -40 °C ... 60 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Mounting type | DIN rail mounting |
| Mounting position | any |
| Application | Universal |
| Protective circuit | Bridge rectifier |
| Nominal input voltage UN | 24 V AC/DC |
| Conductor cross section AWG | 26 ... 14 |
| Tightening torque | 0.6 Nm ... 0.8 Nm |
| Status display | LED |
| Depth | 94 mm |
| Flammability rating according to UL 94 | V0 (Housing) |
| Enclosure Low | Required protection according to the Rules shall be provided upon installation on board |
| Low Voltage Directive | Conformance with Low Voltage Directive |
| Electromagnetic compatibility | Conformance with EMC directive |
| Maximum switching voltage | - |
| Insulation | - |
| Overvoltage category | II |
The Phoenix PLC-BSC-24UC/21 is engineered with precision to handle diverse relay integration needs. Designed for 24 V AC/DC input voltage, it features a screw connection mechanism that supports both rigid and flexible conductor cross sections from 0.14 mm² to 2.5 mm². The socket's slim 6.2 mm width and 80 mm height make it ideal for installations where panel space is limited. It supports DIN rail mounting in any orientation, offering flexibility during integration. Built with UL 94 V0-rated housing, this socket provides enhanced flame resistance, and operates reliably across extreme temperature ranges from -40 °C to +60 °C. A built-in bridge rectifier protective circuit and clear LED status display further enhance safety and usability in control systems. Compliant with both EMC and Low Voltage Directives, this model reflects Phoenix Contact’s commitment to high-quality and standard-conforming components.
The Relay Socket PLC-BSC-24UC/21 is widely used in industrial automation panels, PLC interface relays, and switching cabinets where compact relay base modules are essential. It's a trusted choice for maintenance engineers setting up signal switching, relay logic, or interlocking systems in power plants, process control units, packaging lines, and machine tools. With easy wiring access and universal compatibility, it significantly reduces assembly time and wiring errors. Engineering students and junior technicians benefit from its standardized layout and safety markings during learning and lab setup. Whether upgrading older panels or building new systems, this relay socket is a reliable foundation for signal transmission and relay mounting requirements.
For more details about the brand, visit the Phoenix Contact official page. To explore compatible relay models and specifications, visit the full Phoenix Relay product listing on IndMALL.







