Phoenix PLC-RSC-120UC/21 1 Changeover Contact Relay
Phoenix PLC-RSC-120UC/21 is a relay module with 120 V AC nominal input and 1 changeover contact for control circuits. This Phoenix Phoenix 1 Changeover Contact Relay 2966197 belongs to the PLC Series and features 4 kV AC test voltage, 6 ms response time, monostable polarized drive, bridge rectifier protective circuit, yellow LED operating display, AgSnO contact material, screw connection, 15 ms release time, 3.5 mA typical input current, and 0.42 W maximum power dissipation.
| Brand | Phoenix Contact |
| Product Type | Relay Module |
| Model Number | PLC-RSC-120UC/21 |
Phoenix PLC-RSC-120UC/21 1 Changeover Contact Relay - Technical Specifications
| Specification | Value |
|---|---|
| Product type | Relay Module |
| Product family | PLC-INTERFACE |
| Application | Universal |
| Mechanical service life | 2x 107 cycles |
| Insulation | - |
| Overvoltage category | III |
| Pollution degree | - |
| Maximum power dissipation for nominal condition | 0.42 W |
| Test voltage (Winding/contact) | 4 kV AC (50 Hz, 1 min., winding/contact) |
| Test voltage (Changeover contact/changeover contact) | - |
| Rated surge voltage | - |
| Nominal input voltage UN | 120 V AC |
| Input voltage range | 93.6 V AC ... 168 V AC (20 °C) |
| Drive and function | monostable |
| Drive (polarity) | polarized |
| Typical input current at UN | 3.5 mA (at UN = 120 V AC) |
| Typical response time | 6 ms |
| Typical release time | 15 ms |
| Protective circuit | Bridge rectifier; Bridge rectifier |
| Operating voltage display | Yellow LED |
| Contact switching type | 1 changeover contact |
| Type of switch contact | Single contact |
| Contact material | AgSnO |
| Maximum switching voltage | 250 V AC/DC (The separating plate PLC-ATP should be installed for voltages larger than 250 V (L1, L2, L3) between identical terminal blocks in adjacent modules. Potential bridging is then carried out with FBST 8-PLC... or ...FBST 500...) |
| Limiting continuous current | 6 A |
| Maximum inrush current | 10 A (4 s) |
| Min. switching current | 10 mA (12 V) |
| Interrupting rating (ohmic load) max. | 140 W (at 24 V DC) |
| Switching capacity | 2 A (at 24 V, DC13) |
| Connection method | Screw connection |
| Stripping length | 8 mm |
| Conductor cross section rigid | 0.14 mm² ... 2.5 mm² |
| Conductor cross section flexible | 0.14 mm² ... 2.5 mm² |
| Conductor cross section AWG | 26 ... 14 |
| Tightening torque | 0.6 Nm ... 0.8 Nm |
| Width | 6.2 mm |
| Height | 80 mm |
| depth | 94 mm |
| Color | gray (RAL 7042) |
| Flammability rating according to UL 94 | V0 (Housing) |
| Degree of protection (Relay) | - |
| Degree of protection (Relay base) | IP20 (Relay base) |
| Ambient temperature (operation) | -40 °C ... 55 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Temperature | D |
| Humidity | A |
| Vibration | B/C |
| EMC | B |
| Enclosure | 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 |
| Standards/regulations | IEC 60947-5-1 |
| Mounting Type | DIN rail mounting |
| Mounting position | any |
| Contact Connection type | - |
| Output fuse | 4 A gL/gG NEOZED |
| Degree of protection (Installation location) | - |
The PLC-RSC-120UC/21 Phoenix 1 Changeover Contact Relay 2966197 is designed for universal switching tasks in industrial automation panels. It operates at 120 V AC with 1 changeover contact and supports 4 kV AC insulation between winding and contact. With a 6 ms response time and polarized monostable drive, it ensures defined switching performance. As part of the PLC Series, this Phoenix relay module is integrated into industrial control systems across India.
In conveyors, packaging machines, assembly stations, and control cabinets, the PLC-RSC-120UC/21 enables stable signal switching between PLC outputs and field devices. The screw connection method supports secure wiring, while the bridge rectifier protective circuit manages AC input stability. Its 15 ms release time and 2x 10⁷ mechanical service life allow consistent operation in repetitive industrial processes.
The PLC-RSC-120UC/21 Phoenix 1 Changeover Contact Relay 2966197 combines electrical insulation, controlled switching, and compact panel integration. With 120 V AC input, single changeover contact, 4 kV AC test voltage, and 0.42 W power dissipation, it meets structured automation requirements. Manufactured by Phoenix under the PLC Series, this relay module supports dependable performance in industrial automation environments.
