$ 81.88
High-reliability 110 V DC relay module for railway control systems. Vibration-resistant, EN 50155 certified, and built for extreme environments.
The Phoenix Contact PLC-RPT-110UC/21-21/RW is a rugged relay module engineered for railway and transportation control systems. It combines a plug-in miniature relay with a push-in terminal block, offering reliable operation within a broad input range of 77–137.5 V DC. Built for safety and endurance, it provides secure isolation between coil and contact sides and performs flawlessly under extreme temperatures from –40 °C to +70 °C. Certified to EN 50155 standards, this compact module is ideal for rolling stock, ensuring dependable switching performance in vibration-prone environments.
Designed for long-term reliability in critical applications, the PLC-RPT-110UC/21-21/RW delivers exceptional electrical performance with its dual changeover contacts capable of handling up to 250 V AC/DC. The Push-in connection system simplifies wiring and reduces setup time, while integrated wide-range electronics, RCZ filtering, and surge protection ensure consistent performance even under fluctuating supply conditions. Its DIN-rail design allows easy integration into control panels, making it a preferred choice for signal relay, automation control, and onboard electrical systems where high durability and safe isolation are essential.
Why Phoenix Contact PLC-RPT-110UC/21-21/RW?
The Phoenix Contact PLC-RPT-110UC/21-21/RW stands out for its railway-grade endurance, wide voltage range, and compact design. It ensures consistent operation even in harsh vibration and temperature conditions, offering plug-and-play reliability with minimal maintenance. Its Push-in connection technology and EN 50155 certification make it a trusted solution for engineers who demand safety, precision, and long-term stability in control applications.
What problem does it solve?
This relay module addresses the challenge of maintaining signal reliability and electrical isolation in demanding transport and industrial environments. It eliminates instability caused by fluctuating voltages, shock, or vibration—issues common in railway systems. By combining robust insulation, surge protection, and flexible mounting, it ensures uninterrupted control communication, reducing downtime and improving system safety and efficiency.
| Feature | Details | Benefit |
|---|---|---|
| Product Type | Relay Module (PLC-INTERFACE Series) | Compact, reliable signal switching in control and automation systems |
| Application | Designed for railway and transportation control systems | Ensures stable operation under high vibration and shock environments |
| Nominal Input Voltage (UN) | 110 V DC | Compatible with standard railway voltage systems |
| Input Voltage Range | 77 V DC – 137.5 V DC (0.7 – 1.25 × UN) | Operates reliably under fluctuating supply conditions |
| Contact Type | 2 changeover contacts (AgNi material) | Provides flexible control switching and long contact life |
| Maximum Switching Voltage | 250 V AC/DC | Suitable for both AC and DC load applications |
| Continuous Current Rating | 6 A | Supports moderate power control circuits safely |
| Operating Temperature Range | −40 °C to +70 °C (short-term up to 85 °C) | Reliable performance in extreme temperature conditions |
| Protective Circuit | Built-in RCZ filter, surge protection, and freewheeling diode | Extends module life and protects against voltage spikes |
| Electrical Isolation | 5 kV RMS (coil/contact), 2.5 kV RMS (contact/contact) | Prevents interference and ensures electrical safety |
| Connection Method | Push-in connection terminal | Tool-free wiring for quick and secure installation |
| Mounting Type | DIN rail mount (EN 60715 standard) | Simplifies integration into control cabinets |
| Compliance & Standards | EN 50155, EN 61373, EN 50121 | Certified for railway and industrial use worldwide |
| Housing Material / Color | V0-rated thermoplastic, Gray (RAL 7042) | Flame-retardant material enhances durability and safety |
| Dimensions (W × H × D) | 14 × 80 × 94 mm | Space-saving design for compact panels |
Download Phoenix Contact PLC-RPT-110UC/21-21/RW (2900348) Datasheet
| Item | Details |
|---|---|
| GTIN Number | 4046356507523 |
| Traffic Number | C461 |
| Weight (per piece) | 64.8 g |
| Country of Origin | Germany (DE) |
In railway interlocking setups, reliable relays are essential for managing routes, switches, and signal lamps. The PLC-RPT-110UC/21-21/RW provides secure isolation between control and field circuits, ensuring that voltage fluctuations or surges do not damage signal logic. Its shock and vibration resistance maintains dependable operation even when installed on rolling stock or near heavy rail equipment. The wide 77–137.5 V DC range guarantees consistent signal control despite unstable traction power or environmental conditions.
Track circuit systems depend on accurate current sensing to detect train presence on the rails. This relay module ensures electrical separation and stable signal transfer between the detection circuit and signaling equipment. With its dual changeover contacts and fast switching capability, it supports redundant safety systems while maintaining high reliability. The Push-in connection terminals simplify field wiring and minimize maintenance, ideal for outdoor enclosures exposed to vibration, humidity, and electrical noise.
Automatic crossings rely on relay interfaces to link logic controllers with warning lights, barriers, and alarms. The PLC-RPT-110UC/21-21/RW ensures smooth and secure switching between control signals and mechanical actuators. Its surge protection circuitry and RCZ filtering safeguard against transient voltages caused by long cable runs or lightning exposure. The wide temperature tolerance enables reliable operation in both cold and hot climates, minimizing system downtime and ensuring commuter safety.
Modern trains use centralized control for lighting, ventilation, and air-conditioning. The PLC-RPT-110UC/21-21/RW acts as a robust interface relay, handling onboard auxiliary circuits while maintaining control-side isolation. Its compact DIN-rail design fits into limited cabinet spaces, while high insulation strength protects electronics from voltage disturbances. This results in stable operation of comfort systems and power distribution across different cars, helping reduce failures and maintenance costs in long-haul rail operations.
| Category | Model Name | Part Number | Benefit |
|---|---|---|---|
| Separating Plate | PLC-ATP BK | 2966841 | Provides safe electrical separation and visual grouping of voltage zones |
| Power Terminal Block | PLC-ESK GY | 2966508 | Simplifies power feed wiring and ensures organized distribution |
| Single Plug-in Bridge (Red) | FBST 6-PLC RD | 2966236 | Enables quick bridging between adjacent relays for signal sharing |
| Single Plug-in Bridge (Blue) | FBST 6-PLC BU | 2966812 | Allows color-coded signal or phase identification in wiring layouts |
| Continuous Plug-in Bridge (Red) | FBST 500-PLC RD | 2966786 | Provides continuous potential distribution for multiple modules |
| Continuous Plug-in Bridge (Gray) | FBST 500-PLC GY | 2966838 | Ensures clean and uniform electrical connections across relay modules |
| Zack Marker Strip (Unmarked) | ZB 10:UNBEDRUCKT | 1053001 | Customizable labeling for easy circuit identification |
| Custom Printed Marker Strip | ZB 10 CUS | 0824941 | Offers clear and professional identification for wiring layouts |
| DIN Rail (Perforated) | NS 35/7.5 PERF 2000MM | 0801733 | Standard mounting base for PLC-INTERFACE and relay modules |
| DIN Rail (Unperforated) | NS 35/7.5 UNPERF 2000MM | 0801681 | Provides additional mechanical stability in industrial cabinets |
| Screwdriver Tool | SZF 1-0.6X3.5 | 1204517 | Ensures safe handling and precise wiring during installation |
| Replacement Relay | REL-MR-60DC/21-21 | 2961273 | Compatible spare relay ensuring continuous system uptime |
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.
