Phoenix PLC-RSC-24DC/21 24VDC Input Voltage Relay
Phoenix PLC-RSC-24DC/21 is a relay module with 24 V DC nominal input and 1 changeover contact for control circuits. This Phoenix Phoenix Contact 24VDC Input Voltage Relay 2966171 belongs to the PLC Series and features 4 kV AC test voltage, 5 ms response time, monostable polarized drive, reverse polarity protection, yellow LED operating display, AgSnO contact material, screw connection, 8 ms release time, 9 mA typical input current, and 0.22 W maximum power dissipation.
| Brand | Phoenix Contact |
| Product Type | Relay Module |
| Model Number | PLC-RSC- 24DC/21 |
Phoenix PLC-RSC-24DC/21 24VDC Input Voltage 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 | 0.22 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 | 24 V DC |
| Input voltage range | 18.5 V DC ... 33.6 V DC (20 °C) |
| Drive and function | monostable |
| Drive (polarity) | polarized |
| Typical input current at UN | 9 mA |
| Typical response time | 5 ms |
| Typical release time | 8 ms |
| Protective circuit | Reverse polarity protection; Polarity protection diode |
| 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) | RT III (Relay) |
| Degree of protection (Relay base) | IP20 (Relay base) |
| Ambient temperature (operation) | -40 °C ... 70 °C (see to derating) |
| 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 | Power contact |
| Output fuse | 4 A gL/gG NEOZED |
| Degree of protection (Installation location) | ≥ IP54 (Installation location) |
The PLC-RSC-24DC/21 Phoenix Contact 24VDC Input Voltage Relay 2966171 is designed for universal switching tasks in industrial automation panels. It operates at 24 V DC with 1 changeover contact and supports 4 kV AC insulation between winding and contact. With a 5 ms response time and polarized monostable drive, it ensures defined switching control. As part of the PLC Series, this Phoenix relay module is integrated into automation systems across Indian industries.
In conveyors, packaging lines, assembly stations, and machine control cabinets, the PLC-RSC-24DC/21 provides stable signal switching between controllers and field devices. The screw connection method ensures secure panel wiring, while reverse polarity protection enhances circuit safety. Its 8 ms release time and 2x 10⁷ mechanical service life support consistent operation in repetitive industrial applications.
The PLC-RSC-24DC/21 Phoenix Contact 24VDC Input Voltage Relay 2966171 combines defined electrical insulation, controlled switching, and compact integration. With 24 V DC input, single changeover contact, 4 kV AC test voltage, and low 0.22 W power dissipation, it meets structured control panel requirements. Manufactured by Phoenix under the PLC Series, this relay module supports dependable performance in industrial automation environments.
