Phoenix PLC-BSC-120UC/21-21 Relay Socket
The Phoenix PLC-BSC-120UC/21-21 Relay Socket (Part No: 2967031 ) 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-120UC/21-21 |
Phoenix PLC-BSC-120UC/21-21 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 | 14 mm |
| Height | 80 mm |
| Color | gray (RAL 7042) |
| Ambient temperature (operation) | -40 °C ... 55 °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 | 120 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 |
| Compatible components | Miniature relay, REL-MR-110DC/21-21AU, REL-MR-110DC/21-21 |
| Maximum switching voltage | - |
The Phoenix PLC-BSC-120UC/21-21 is part of the industry-proven PLC-INTERFACE product line, designed to ensure efficient relay connectivity in modern control panels. Built with a durable M3 screw connection system, it accommodates both rigid and flexible conductors between 0.14 mm² to 2.5 mm² or AWG 26 to 14, providing strong electrical contact and mechanical stability. With compact dimensions of 14 mm width and 80 mm height, it supports tight DIN rail installations without compromising accessibility or labeling space. Its 120 V AC/DC input voltage rating suits medium to high-voltage control systems. A bridge rectifier circuit is integrated to prevent polarity issues, making it safer and more robust in both AC and DC environments. The LED status indicator provides quick diagnostics during commissioning and troubleshooting, saving engineers valuable time. Built with UL 94 V0 flame-retardant housing and capable of operating in harsh temperatures from -40 °C to +55 °C, this model is ideal for rugged industrial environments. It is fully compliant with Low Voltage Directive and EMC Directive requirements, ensuring seamless integration into global automation standards.
Suitable for a wide range of industrial applications, the PLC-BSC-120UC/21-21 serves as a universal relay base for signal switching, PLC I/O expansion, and electromechanical relay interfacing. It is widely used by maintenance engineers handling relay replacement in HVAC control systems, motor starters, or machine safety circuits. OEMs prefer its compact design and compatibility with REL-MR-110DC/21-21AU and other miniature relays for building compact yet powerful control panels. Junior engineers benefit from its intuitive layout and secure screw terminals during electrical training or live projects. Its gray RAL 7042 finish and standardized form ensure neat alignment and uniformity across panel layouts. With DIN rail mounting support in any orientation, the socket fits seamlessly into both new and retrofit automation projects.
For more industrial-grade solutions, visit the official Phoenix Contact brand page. Browse all compatible sockets and accessories in the Phoenix Relay Socket category on IndMALL.
