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Phoenix RIF-1-RPT-LDP-24DC/2X21 Relay Module
The Phoenix RIF-1-RPT-LDP-24DC/2X21 Relay Module (Part No: 2903334 ) 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/2X21 |
Phoenix RIF-1-RPT-LDP-24DC/2X21 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 | 8 A (see diagram) |
| Maximum inrush current | 25 A (20 ms, N/O contacts) |
| Min. switching current | 10 mA (5 V) |
| Interrupting rating (ohmic load) max. | 192 W (at 24 V DC) |
| Switching capacity | - |
| 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/2X21 (Part No: 2903334) is a robust Phoenix Contact 2 changeover Relay designed for universal automation and control applications. Operating at a nominal input voltage of 24 V DC, it supports an input range from 19.2 V DC to 33.6 V DC, ensuring consistent relay switching even under fluctuating electrical conditions. This Relay Module offers a mechanical service life of approximately 3×10⁷ cycles, providing high endurance and stable performance across long operational periods.
The RIF-1-RPT-LDP-24DC/2X21 integrates a freewheeling diode for circuit protection and features two changeover contacts made from durable AgNi material for optimal conductivity. It handles up to 8 A continuous current and a maximum switching voltage of 250 V AC/DC. The module’s push-in connection method simplifies wiring while maintaining vibration resistance, making installation faster and safer. Designed with safe isolation between input and output, it meets IEC 60947-5-1 standards for global compliance. Engineers and Phoenix Contact distributors prefer this model for its dependable design, efficient operation, and compact 16 mm width that fits easily on standard DIN rails.
This Phoenix Contact 2 changeover Relay ensures dependable performance in production lines, control cabinets, and electrical distribution panels, reducing downtime and maintenance frequency. The RIF-1-RPT-LDP-24DC/2X21 (2903334) combines electrical efficiency with strong mechanical durability, making it a trusted solution among automation specialists and industrial buyers seeking reliable relay switching modules.
Engineers searching for RIF-1-RPT-LDP-24DC-2X21-2903334, RIF-1-RPT-LDP-24DC/2X21, or 2903334 Phoenix Contact prefer this Relay Module for its accuracy and endurance. Known for its compact design, safe isolation, and low power dissipation of 0.43 W, it delivers consistent output and long-term reliability in high-demand automation setups. Many Phoenix Contact suppliers recommend this model for replacement or system upgrades due to its proven compatibility and robust engineering. The Phoenix 2903334 Relay Module continues to serve as a reliable relay switching solution across industries, maintaining high trust among engineers for both new and retrofit control projects.
