Before procurement teams confirm RIF-1-RPT-LDP-24DC-2X21AU, they typically review SMPS Phoenix, Phoenix 2966207 and Phoenixcontact Phoenix Contact Industrial Ethernet Switches to double-check performance ratings, stock availability, and supplier credibility carefully.
Phoenix RIF-1-RPT-LDP-24DC/2X21AU Relay Module
The Phoenix RIF-1-RPT-LDP-24DC/2X21AU Relay Module (Part No: 2903330 ) offers a 24 V DC nominal input voltage UN, 19.2 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 | RIF-1-RPT-LDP-24DC/2X21AU |
Phoenix RIF-1-RPT-LDP-24DC/2X21AU Relay Module – Technical Specifications
| Specification | Value |
|---|---|
| Product type | Relay Module |
| Product family | RIFLINE complete |
| Application | Universal |
| Mechanical service life | approx. 3x 107 cycles |
| Insulation | Safe isolation between input and output |
| Overvoltage category | III |
| Pollution degree | 2 |
| Maximum power dissipation for nominal condition | 0.43 W |
| Test voltage (Winding/contact) | 4 kVrms (50 Hz, 1 min., winding/contact) |
| Test voltage (Changeover contact/changeover contact) | 2.5 kVrms (50 Hz, 1 min., changeover contact/changeover contact) |
| Rated surge voltage | 6 kV (Input/output) |
| Nominal input voltage UN | 24 V DC |
| Input voltage range | 19.2 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 | Freewheeling diode |
| Operating voltage display | Yellow LED |
| Contact switching type | 2 changeover contacts |
| Type of switch contact | Single contact |
| Contact material | AgNi |
| Maximum switching voltage | 250 V AC/DC |
| Limiting continuous current | 50 mA |
| Maximum inrush current | 25 A (20 ms, N/O contacts) |
| Min. switching current | 10 mA (At 5 V) |
| Interrupting rating (ohmic load) max. | 192 W (at 24 V DC) |
| Switching capacity | 2 A (at 24 V, DC13) |
| Connection method | Push-in connection |
| Stripping length | 8 mm |
| Conductor cross section rigid | 0.14 mm² ... 1.5 mm² |
| Conductor cross section flexible | 0.14 mm² ... 1.5 mm² |
| Conductor cross section AWG | 26 ... 16 (solid) |
| Tightening torque | - |
| Width | 16 mm |
| Height | 96 mm |
| depth | 75 mm |
| Color | gray (RAL 7042) |
| Flammability rating according to UL 94 | V2 (Housing) |
| Degree of protection (Relay) | RT III (Relay) |
| Degree of protection (Relay base) | IP20 (Relay base) |
| Ambient temperature (operation) | -40 °C ... 70 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Temperature | - |
| Humidity | - |
| Vibration | - |
| EMC | - |
| Enclosure | - |
| Low Voltage Directive | - |
| Electromagnetic compatibility | - |
| 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 RIF-1-RPT-LDP-24DC/2X21AU (Part No: 2903330) Relay Module belongs to the advanced RIFLINE complete product family designed for universal automation applications. This Phoenix Multi-layer Contact Relay operates at a nominal input voltage of 24 V DC and supports a wide input voltage range from 19.2 V DC to 33.6 V DC, allowing stable performance under variable industrial conditions. Its mechanical service life of approximately 3×10⁷ cycles guarantees exceptional durability. Equipped with two changeover contacts and AgNi contact material, the module ensures efficient current flow and extended contact reliability. The integrated freewheeling diode safeguards circuits from voltage spikes, while the yellow LED display offers clear operational indication. Supporting push-in connection and DIN rail mounting, the module simplifies installation and enhances wiring safety. Compact dimensions (16 mm width, 96 mm height, and 75 mm depth) make it ideal for space-constrained control panels while maintaining optimal electrical insulation and protection performance.
The Phoenix Contact Relay Module RIF-1-RPT-LDP-24DC/2X21AU (2903330) is widely used in PLC interfaces, automation control systems, and process machinery where reliable signal switching and electrical isolation are essential. This Phoenix Multi-layer Contact Relay is ideal for switching DC and AC loads, handling control voltages, and maintaining safe isolation between circuits. Its robust construction and IP20 protection rating make it suitable for industrial environments requiring continuous, vibration-resistant operation. Maintenance engineers and electrical designers trust the RIF-1-RPT-LDP-24DC/2X21AU for applications involving output control, load switching, and system safety interlocks, thanks to its high endurance and low power dissipation of 0.43 W. Its reinforced insulation and precision design ensure stable performance in high-reliability applications such as factory automation and power distribution systems.
The Phoenix Contact RIF-1-RPT-LDP-24DC/2X21AU (2903330) offers superior design, reliable performance, and long-term operational stability in industrial automation. Built for precision, the RIF-1-RPT-LDP-24DC/2X21AU delivers accurate switching and consistent reliability in 24 V DC applications. The rif-1-rpt-ldp-24dc-2x21au-2903330 model ensures strong protection, quick response, and extended service life. Trusted by engineers across sectors, the Phoenix Contact RIF-1-RPT-LDP-24DC/2X21AU continues to perform efficiently in electrical control and automation systems.







