$ 79.58
Reliable 110 V DC relay for railway control systems. Phoenix Contact PLC-RPT-110UC/21-21AU/RW ensures safe isolation, vibration resistance, and long service life.
The Phoenix Contact PLC-RPT-110UC/21-21AU/RW is a compact relay module designed for railway and transport automation, ensuring stable signal control even in harsh environmental conditions. It operates with a nominal voltage of 110 V DC and features two gold-plated changeover contacts for reliable, low-resistance switching. With certification for railway standards and resistance to vibration, shock, and temperature extremes ranging from –40 °C to +70 °C, it offers long-term dependability. The unit’s DIN rail mount and safe isolation between coil and contact sides make it a trusted choice for railway vehicle control and automation panels.
Built with wide-range electronics and optimized for fluctuating voltage inputs from 0.7 × UN to 1.25 × UN, the PLC-RPT-110UC/21-21AU/RW ensures consistent operation under unstable power conditions. The Push-in connection simplifies wiring, reducing assembly time and improving safety. Its multi-layer gold contact technology maintains clean signal transfer, even under minimal load conditions, while robust insulation enhances reliability. Commonly used in train door systems, lighting control, and safety signaling, this relay module supports continuous operation in demanding rail environments. The result is a longer service life, minimized maintenance downtime, and improved operational reliability across transportation networks.
Why Phoenix Contact PLC-RPT-110UC/21-21AU/RW?
The Phoenix Contact PLC-RPT-110UC/21-21AU/RW stands out for its railway-grade durability and precision engineering. Designed to perform flawlessly under extreme vibration, temperature, and voltage variation, it ensures dependable switching in critical control systems. Its gold-plated contacts and wide-range electronics make it ideal for long-term stability where reliability and safety are non-negotiable.
What Problem Does It Solve?
This relay module tackles the challenges of unreliable signal control in harsh transport environments. By providing stable isolation, shock resistance, and voltage tolerance, it eliminates failures caused by fluctuating power or mechanical stress. The result is uninterrupted control of train doors, lighting, and onboard systems—keeping operations smooth, safe, and maintenance costs low.
| Feature | Details | Benefit |
|---|---|---|
| Product Type | Relay Module – PLC-INTERFACE Series | Compact, modular design ideal for control panels and railway systems |
| Application | Designed for railway and transportation automation | Ensures stable operation under vibration, shock, and wide temperature ranges |
| Nominal Input Voltage (UN) | 110 V DC | Optimized for standard railway voltage systems |
| Input Voltage Range | 77 V DC to 137.5 V DC (0.7 × UN to 1.25 × UN) | Reliable performance under fluctuating voltage conditions |
| Contacts | 2 changeover contacts (SPDT), AgNi hard gold-plated | Long switching life and superior conductivity |
| Contact Rating | Up to 6 A continuous current, 250 V AC/DC | Handles both control and signal-level loads effectively |
| Coil Type | Polarized monostable with surge protection | Reduces power loss and prevents coil damage |
| Response Time | 5 ms typical | Fast switching response for precise control |
| Release Time | 11 ms typical | Smooth operation in high-speed control systems |
| Protective Circuit | Integrated RCZ filter and freewheeling diode | Suppresses voltage spikes, extending relay lifespan |
| Operating Temperature Range | –40 °C to +70 °C (short-term up to +85 °C) | Reliable in extreme railway or industrial environments |
| Insulation Voltage | 250 V AC, test voltage up to 5 kVrms | Provides safe electrical isolation between coil and contacts |
| Mechanical Service Life | Approx. 30 million cycles | Long operational lifetime, reducing replacement frequency |
| Connection Method | Push-in spring connection | Tool-free wiring and quick installation |
| Mounting Type | DIN rail mounting (EN 60715) | Easy integration into standard control enclosures |
| Housing Material & Color | UL94 V0, Gray (RAL 7042) | Flame-retardant for safety compliance |
| Protection Class | IP20 (Base), RT III (Relay) | Suitable for protected electrical cabinets |
| Certifications | EN 50155, EN 61373, EN 50121, CE, UKCA, DNV GL | Meets international railway and marine standards |
Download Phoenix Contact PLC-RPT-110UC/21-21AU/RW (2900351) Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4046356510097 |
| Tariff Number | 85364900 |
| Weight (per piece) | 64.17 g |
| Country of Origin | Germany (DE) |
In modern passenger trains, the door and locking mechanisms demand reliable signal transmission despite vibration and voltage fluctuation. The PLC-RPT-110UC/21-21AU/RW module ensures consistent relay switching with its gold-plated contacts that resist oxidation. Its wide input voltage range and built-in surge suppression protect the control system from electrical instability during braking or acceleration. The compact DIN-rail mounting allows space-saving installation inside vehicle panels, keeping safety-critical door operations smooth and dependable.
Railway lighting and HVAC systems operate under varying temperatures and electrical noise. This relay module stabilizes switching for lighting, heaters, and fans, preventing flicker or system resets caused by transient spikes. The RCZ filter and protective circuit reduce electromagnetic interference, while its –40 °C to +70 °C operating range guarantees stable function in cold tunnels or hot weather. It provides transport operators with uninterrupted comfort control and lower maintenance downtime.
In railway engines and control cabins, reliable signal isolation is crucial for alarms and safety interlocks. The PLC-RPT-110UC/21-21AU/RW acts as a precise link between control electronics and high-voltage circuits, offering safe separation through its reinforced insulation. Its gold-coated contacts maintain strong conductivity under humidity and mechanical stress. As a result, operators gain consistent fault detection and warning transmission, enhancing system safety and operational integrity in mission-critical applications.
Rail crossing automation requires quick and accurate signal response for barriers and warning lights. This module’s fast switching time—around 5 milliseconds—ensures timely relay activation for gate control logic. Its wide voltage tolerance prevents false triggers due to transient surges or long cable runs. With shock and vibration resistance per railway standards, the PLC-RPT-110UC/21-21AU/RW supports continuous, fail-safe operation in outdoor installations exposed to constant motion and harsh conditions.
| Category | Model / Name | Part Number | Benefit |
|---|---|---|---|
| Single Relay Replacement | REL-MR-60DC/21-21AU | 2961286 | Serves as a compatible replacement relay for maintenance or spare parts |
| Separating Plate | PLC-ATP BK | 2966841 | Provides visual and electrical separation between relay modules for safety |
| Power Terminal Block | PLC-ESK GY | 2966508 | Simplifies power input and distribution to multiple relay modules |
| Continuous Plug-in Bridge (Red) | FBST 500-PLC RD | 2966786 | Enables quick bridging of potentials across multiple terminals |
| Continuous Plug-in Bridge (Blue) | FBST 500-PLC BU | 2966692 | Provides organized wiring with color-coded identification |
| Single Plug-in Bridge (Gray) | FBST 6-PLC GY | 2966825 | Ideal for linking adjacent relay modules efficiently |
| DIN Rail (Standard Steel) | NS 35/7.5 PERF 2000MM | 0801733 | Standard mounting option for secure installation in control cabinets |
| DIN Rail (Aluminum) | NS 35/7.5 AL UNPERF 2000MM | 0801704 | Lightweight and corrosion-resistant for mobile or outdoor setups |
| DIN Rail End Cap | NS 35/7.5 CAP | 1206560 | Protects rail edges and improves installation safety |
| Terminal Marker (Blank) | ZB 6:UNBEDRUCKT | 1051003 | Allows user labeling for easy terminal identification |
| Terminal Marker (Custom) | ZB 6 CUS | 0824992 | Enables professional and clear circuit identification |
| Screwdriver / Tool | SZF 1-0,6X3,5 | 1204517 | Suitable for installation, tightening, and field maintenance tasks |
For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
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Technical Support – Contact us for professional after-sales technical assistance.
