In sourcing discussions, PLC-RSC-24DC-21HC is often placed next to SMPS Phoenix, Phoenix 2966207 and Phoenixcontact Phoenix Contact Industrial Ethernet Switches so procurement teams can align budgets and technical requirements effectively.
Phoenix PLC-RSC- 24DC/21HC Relay Module
The Phoenix PLC-RSC- 24DC/21HC Relay Module (Part No: 2967620 ) offers a 24 V DC nominal input voltage UN, 20.2 V DC ... 33.6 V DC (20 °C) input voltage range, polarized Drive, 8 ms typical response time. Manufactured by Phoenix under the Phoenix Relay Module category, this model belongs to the Phoenix PLC Series.
| Brand | Phoenix Contact |
| Product Type | Relay Module |
| Model Number | PLC-RSC- 24DC/21HC |
Phoenix PLC-RSC- 24DC/21HC Relay Module – Technical Specifications
| Specification | Value |
|---|---|
| Product type | Relay Module |
| Product family | PLC-INTERFACE |
| Application | High continuous currents |
| Mechanical service life | 3x 107 cycles |
| Insulation | Safe isolation, reinforced insulation |
| Overvoltage category | III |
| Pollution degree | 3 |
| Maximum power dissipation for nominal condition | 0.43 W |
| Test voltage (Winding/contact) | 4 kV AC (50 Hz, 1 min., winding/contact) |
| Test voltage (Changeover contact/changeover contact) | - |
| Rated surge voltage | 6 kV |
| Nominal input voltage UN | 24 V DC |
| Input voltage range | 20.2 V DC ... 33.6 V DC (20 °C) |
| Drive and function | monostable |
| Drive (polarity) | polarized |
| Typical input current at UN | 18 mA |
| Typical response time | 8 ms |
| Typical release time | 10 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 | AgNi |
| 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 | 10 A |
| Maximum inrush current | 30 A (300 ms) |
| Min. switching current | 10 mA (12 V) |
| Interrupting rating (ohmic load) max. | 240 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 | 14 mm |
| Height | 80 mm |
| depth | 94 mm |
| Color | gray (RAL 7042) |
| Flammability rating according to UL 94 | V0 (Housing) |
| Degree of protection (Relay) | RT II (Relay) |
| Degree of protection (Relay base) | IP20 (Relay base) |
| Ambient temperature (operation) | -40 °C ... 60 °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 | - |
| Degree of protection (Installation location) | - |
The Phoenix Contact PLC-RSC-24DC/21HC (Part No: 2967620) Relay Module is part of the advanced PLC-INTERFACE product family, engineered for high continuous current applications and reliable switching operations. Designed to operate at a nominal voltage of 24V DC within a range of 20.2V DC to 33.6V DC, it provides stable performance even under voltage fluctuations. Featuring safe isolation and reinforced insulation, this model ensures operator and equipment safety in demanding industrial conditions. It comes with a single changeover contact made of AgNi for excellent conductivity and durability, supporting a maximum continuous current of 10A and inrush currents up to 30A. With a mechanical service life of 3×10⁷ cycles and a power dissipation of just 0.43 W, the PLC-RSC-24DC/21HC is built for efficiency and long-lasting reliability. The integrated yellow LED indicator provides visual feedback, while reverse polarity protection and a polarity protection diode safeguard the circuit from incorrect wiring. Measuring 14 mm in width, this Relay Module supports DIN rail mounting for easy installation and compact panel integration, making it a dependable choice for high-load switching applications.
The Phoenix Contact Relay Module PLC-RSC-24DC/21HC (2967620) is ideal for machine control, automation cabinets, and PLC output interfaces that demand precise and safe 24V DC switching. This Phoenix Contact Plug-in Miniature Relay provides reliable electrical isolation and fast operation, ensuring consistent performance in manufacturing, process control, and energy management systems. Engineers value its robust design, quick response time, and easy wiring through screw connections. The PLC-RSC-24DC/21HC enables smooth control operations in compact automation setups while maintaining long service life and high switching capacity. Whether used for load control or signal transfer, it supports efficient integration into modern industrial systems.
The Phoenix Contact PLC-RSC-24DC/21HC (2967620) combines durability, precision, and energy efficiency in one compact relay solution. Designed for heavy-duty automation environments, the plc-rsc-24dc-21hc-2967620 ensures consistent 24V DC performance and reliable operation under continuous loads. With its modular design and proven electrical safety, this model meets the expectations of automation engineers and control system integrators. The Phoenix Contact PLC-RSC-24DC/21HC remains a trusted choice for professionals seeking dependable, long-lasting performance in industrial relay applications.
