Why Phoenix Contact PLC-RPT-24UC/21-21/RW?
Choose the Phoenix Contact PLC-RPT-24UC/21-21/RW for unmatched reliability in critical control systems. Its rugged design thrives in vibration-heavy railway and industrial settings, while the wide voltage range ensures stable operation under fluctuating conditions. With long mechanical life and quick Push-in connections, it’s built for seamless integration and dependable performance wherever precision and durability matter most.
What Problem Does It Solve?
This relay module eliminates signal instability and voltage drop issues common in mobile and high-vibration environments. By ensuring safe isolation between circuits and consistent relay switching, it protects control systems from electrical interference and premature wear. The result: smoother automation, fewer failures, and extended equipment uptime even in the harshest operational conditions.
Key Features & Specifications – Phoenix Contact PLC-RPT-24UC/21-21/RW: 2900346
| Feature | Details | Benefit |
|---|---|---|
| Product Type | PLC-INTERFACE Relay Module | Compact interface for reliable signal switching in automation systems. |
| Application | Railway and Industrial Control Systems | Built to perform in environments exposed to vibration and electrical noise. |
| Input Voltage | 24 V DC (range 16.8–30 V DC, 0.7–1.25 × UN) | Provides consistent operation even under unstable power conditions. |
| Contact Type | 2 Changeover Contacts (SPDT) | Supports flexible switching and signal routing options. |
| Contact Material | Silver Nickel (AgNi) | Enhances conductivity and extends contact life under load. |
| Switching Capacity | 250 V AC/DC, 6 A Continuous | Suitable for high-demand applications requiring stable relay performance. |
| Mechanical Life | Approx. 30 million cycles | Offers exceptional longevity and reduced maintenance downtime. |
| Operating Temperature | -40°C to +70°C (up to +85°C short-term) | Ideal for extreme environments, including outdoor and mobile systems. |
| Connection Type | Push-in connection terminals | Simplifies wiring and speeds up installation. |
| Insulation Voltage | 250 V AC (5 kVrms test) | Provides strong isolation between coil and contact sides for safety. |
| Mounting Type | DIN rail mounting (any position) | Enables fast installation and compact panel design. |
| Protection Rating | IP20 (base), RT III (relay) | Ensures safe operation in control cabinets. |
| Certifications | EN 50155, EN 61373, EN 50121, CE, UKCA | Meets global railway and industrial safety standards. |
Download Phoenix Contact PLC-RPT-24UC/21-21/RW 2900346 Datasheet
Commercial Information – Phoenix Contact PLC-RPT-24UC/21-21/RW: 2900346
| Commercial Data | Details |
|---|---|
| GTIN Number | 4046356507509 |
| Customs / Tariff Number | 85364190 |
| Weight (per piece) | 62.82 g (including packaging) |
| Country of Origin | Germany (DE) |
The Applications of Phoenix Contact PLC-RPT-24UC/21-21/RW
1. Railway Signal and Safety Control
In railway signaling systems, every relay plays a critical role in ensuring safe route selection and train detection. The PLC-RPT-24UC/21-21/RW operates reliably under heavy vibration and fluctuating voltages found in train yards and tracks. Its wide voltage tolerance and certified insulation allow stable communication between control panels and signal lights. Maintenance teams benefit from the quick Push-in connection and compact DIN-rail design, which reduce downtime during service intervals and improve overall system reliability.
2. Train Door and Onboard Automation
Modern trains rely on electronic relay modules to control automatic doors, cabin lighting, and HVAC systems. This relay module handles frequent switching cycles without wear thanks to its durable contacts and 30-million-cycle lifespan. The unit’s ability to perform under extreme temperatures and shock conditions ensures consistent operation throughout long train journeys. Its built-in LED indicator provides immediate visual feedback for technicians, streamlining troubleshooting during routine inspections.
3. Industrial Conveyor and Process Equipment
In manufacturing or packaging environments, relay modules like the PLC-RPT-24UC/21-21/RW are used to isolate low-voltage PLC outputs from motors and solenoids. The high current capacity and silver-nickel contacts guarantee clean switching of loads, preventing signal interference or relay sticking. Push-in terminals simplify quick installation during equipment upgrades. Its rugged housing and wide ambient temperature range allow reliable use in dusty or high-vibration factory floors.
4. Renewable Energy and Power Control Panels
In solar and wind power systems, the relay module provides secure control between sensors, inverters, and protection devices. It withstands fluctuating DC voltages from battery storage or inverter feedback, maintaining stable relay performance. The robust insulation prevents cross-voltage issues while ensuring safe isolation between circuits. With its long service life and minimal maintenance needs, it supports remote energy installations where reliability is crucial and on-site servicing is limited.
Related Products & Accessories – Phoenix Contact PLC-RPT-24UC/21-21/RW
| Category | Model Name | Part Number | Description | Purpose / Benefit |
|---|---|---|---|---|
| Plug-in Bridge (Continuous) | FBST 500-PLC RD | 2966786 | Continuous plug-in bridge, red color, 500 mm length, 32 A capacity | Simplifies power distribution and potential bridging across relay modules. |
| Plug-in Bridge (Continuous) | FBST 500-PLC BU | 2966692 | Continuous plug-in bridge, blue color, 500 mm length, 32 A capacity | Enables quick wiring connections for grouped relay terminals with color coding. |
| Plug-in Bridge (Single) | FBST 6-PLC RD | 2966236 | Single plug-in bridge, 2 positions, red, 6 A capacity | Ideal for connecting two adjacent terminals for compact wiring layouts. |
| Plug-in Bridge (Single) | FBST 6-PLC BU | 2966812 | Single plug-in bridge, 2 positions, blue, 6 A capacity | Provides short interconnections and simplifies grouped potential wiring. |
| Plug-in Bridge (Single) | FBST 6-PLC GY | 2966825 | Single plug-in bridge, 2 positions, gray, 6 A capacity | Adds flexible cross-connection between terminals for signal grouping. |
| Separating Plate | PLC-ATP BK | 2966841 | 2 mm black isolating plate for PLC terminal strips | Ensures electrical separation between modules with different voltage levels. |
| Power Terminal Block | PLC-ESK GY | 2966508 | Power terminal block for up to four potentials | Distributes control or power potentials safely across multiple relay bases. |
| Single Relay (Spare Unit) | REL-MR-12DC/21-21 | 2961257 | Plug-in miniature power relay, 12 V DC coil, 2 changeover contacts | Serves as a compatible spare or replacement relay for PLC-RPT base. |
| DIN Rail (Perforated) | NS 35/7.5 PERF 2000MM | 0801733 | 2 m steel DIN rail, perforated, galvanized finish | Provides sturdy mounting support for relay modules and terminals. |
| DIN Rail (Unperforated) | NS 35/7.5 UNPERF 2000MM | 0801681 | 2 m steel DIN rail, unperforated, silver finish | Suitable for control panels requiring a clean, uniform rail installation. |
| Marker Strip (Unlabeled) | ZB 10:UNBEDRUCKT | 1053001 | White unmarked zack marker strip, 10 positions | Allows custom labeling for easy relay and terminal identification. |
| Marker Strip (Custom Labeled) | ZB 10 CUS | 0824941 | Pre-labeled zack marker strip, customizable text | Supports personalized marking for organized control cabinet layouts. |
| Screwdriver (Tool) | SZF 1-0,6X3,5 | 1204517 | Precision screwdriver, 0.6 x 3.5 x 100 mm, ergonomic grip | Designed for tightening or adjusting relay terminal screws easily. |
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