Phoenix PLC-BSC-120UC/21/SO46 Relay Socket
The Phoenix PLC-BSC-120UC/21/SO46 Relay Socket (Part No: 2980319 ) 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/SO46 |
Phoenix PLC-BSC-120UC/21/SO46 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 ... 55 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Mounting type | DIN rail mounting |
| Mounting position | any |
| Application | Filter to prevent interference |
| Protective circuit | RCV circuit |
| Nominal input voltage UN | 120 V AC |
| 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-60DC/21AU, REL-MR-60DC/21; miniature optocoupler, OPT-60DC/48DC/100, OPT-60DC/24DC/2, OPT-60DC/230AC/1 |
| Input voltage range in reference to UN | 0.85 ... 1.1 |
| Typical input current at UN | 7 mA (50 Hz) |
| Typical response time | 6 ms |
| Typical release time | 10 ms |
| Typical release voltage | 50 V AC |
| Operating voltage display | Yellow LED |
| Maximum switching voltage | 253 V AC (Partition plate PLC-ATP must be installed for voltages larger than 250 V (L1, L2, L3) between identical terminal points in adjacent modules. Potential bridging is then carried out with FBST 8-PLC... or ...FBST 500...) |
| Minimum switching voltage | 24 V AC |
| Limiting continuous current | 0.75 A |
| Voltage drop at max. limiting continuous current | < 1 V |
| Output circuit | 2-conductor, floating |
| Maximum inrush current | 30 A (10 ms) |
| Leakage current | < 1 mA |
| Phase angle cos phi min | 0.5 |
| Max. load value | 4.5 A2s |
| Voltage range with reference to US | - |
The Phoenix Contact PLC-BSC-120UC/21/SO46 is a reliable relay socket built for industrial automation control panels and relay interface systems. Designed by Phoenix Contact, a global leader in industrial connectivity and protection technology, this socket ensures seamless integration and dependable switching performance in demanding electrical environments.
This relay socket operates at a nominal input voltage of 120 V AC and handles a typical input current of 7 mA at 50 Hz. It features a durable screw connection method, supporting conductor sizes from 0.14 mm² to 2.5 mm² (rigid and flexible). The unit has a slim 6.2 mm width and 80 mm height, making it perfect for compact control panels. It’s equipped with an RCV protective circuit to minimize electrical interference, and a yellow LED provides live status indication. Rated for 253 V AC maximum switching voltage and 30 A inrush current, it offers high-performance switching with minimal voltage drop (<1 V). The socket is built with a UL 94 V0-rated flame-retardant housing and operates reliably in extreme temperatures from -40 °C to +55 °C. Its compliance with EMC and Low Voltage Directives further boosts its trustworthiness for OEM and factory installations.
The PLC-BSC-120UC/21/SO46 is commonly used in machine control panels, relay interface modules, and PLC systems where electrical isolation, reliability, and compact size are essential. It’s especially useful in sectors like packaging, HVAC, material handling, and water treatment, where electrical noise and frequent switching can compromise safety and performance. The built-in RCV circuit helps eliminate signal noise, while the LED indicator allows maintenance engineers to quickly identify relay operation status. Its support for DIN rail mounting and any mounting position makes it easy to install in both new and existing systems. For enhanced compatibility, this socket integrates with Phoenix Contact’s miniature relays and optocouplers. You can explore the complete product family on the Phoenix Relay Interface page or visit the Phoenix Contact brand listing on IndMALL.
