Weidmuller FS 4CO Relay Socket – 4 CO Contacts, 10 A, DIN Rail Mount
Weidmuller FS 4CO relay socket is a DIN-rail-mounted interface socket designed for D-SERIES DRM relays, featuring 4 changeover (CO) contacts for flexible signal switching. It addresses the common challenge of securely integrating multi-contact relays into compact industrial control panels while maintaining electrical safety and operational reliability. With a 10 A continuous current rating, screw terminal connections, and compatibility with TS 35 mounting rails, the FS 4CO provides a stable and space-efficient foundation for control, automation, and power distribution applications where consistent performance is required.
The FS 4CO relay socket is engineered for dependable use in industrial control cabinets, machinery systems, and automation panels. Its flat-profile design supports higher component density while preserving clear wiring access. Clearly arranged screw terminals simplify installation and help minimize wiring mistakes during assembly or maintenance. Designed to handle industrial voltage levels and wide operating temperature ranges, the socket enables quick relay replacement, reduces downtime, and supports long-term system scalability with reliable electrical and mechanical performance.
Why FS 4CO?
The FS 4CO is chosen when control systems demand both flexibility and confidence. Its four changeover contacts allow multiple switching paths within a single, compact relay socket, reducing the need for additional components. Designed for industrial panels where space, safety, and serviceability matter, it combines a robust current rating with clear, accessible terminals, making it a reliable foundation for control circuits that must operate consistently over long service lifetimes.
What problem does it solve?
Industrial control panels often struggle with limited space, complex wiring, and the risk of downtime during maintenance. The FS 4CO solves these challenges by providing a structured, high-current relay interface that simplifies wiring and accelerates relay replacement. Its stable DIN-rail mounting and well-defined contact layout reduce installation errors, improve safety, and ensure dependable signal and power switching in demanding automation environments.
Key Features & Specifications – Weidmuller FS 4CO: 7760056107
| Feature | Details | Benefit |
|---|---|---|
| Product Type | Relay socket for D-SERIES DRM relays | Provides a secure and standardized interface for relay integration |
| Contact Configuration | 4 CO (4 changeover contacts) | Enables flexible switching logic within a single compact socket |
| Rated Continuous Current | 10 A | Supports reliable switching of higher-load control circuits |
| Rated Switching Voltage | Up to 300 V AC | Suitable for a wide range of industrial control applications |
| Mounting Method | TS 35 DIN rail | Ensures fast installation and stable mounting in control panels |
| Connection Technology | Screw connection | Delivers strong, vibration-resistant wiring with clear termination |
| Wire Cross-Section Range | 0.5–2.5 mm² | Accommodates common industrial conductor sizes |
| Design Profile | Flat, space-efficient housing | Optimizes panel density and improves layout flexibility |
| Insulation & Safety | Defined creepage and clearance distances | Enhances electrical safety and long-term reliability |
| Protection Degree | IP10 | Protects against accidental contact during installation |
| Operating Temperature | -40 °C to +70 °C | Ensures dependable performance in harsh environments |
| Compliance & Approvals | UL, RoHS compliant | Meets international standards for global installations |
| Color & Material | Black industrial-grade housing | Improves durability and visual consistency in panels |
Download Weidmuller FS 4CO (7760056107) Datasheet
Commercial Information – Weidmuller FS 4CO: 7760056107
| Commercial Data | Details |
|---|---|
| EAN (GTIN) | 4032248855575 |
| Net Weight | 47.2 g |
The Applications
1. High-Density PLC Output Management in Compact Control Panels
In PLC-driven automation systems, engineers often face the challenge of managing many output signals within limited cabinet space. The FS 4CO relay socket is applied to expand PLC outputs while maintaining an orderly and compact layout. Its four changeover contacts allow a single relay position to control multiple switching paths, reducing the need for additional hardware. The flat DIN-rail design supports high component density, while screw terminals ensure stable connections over long operating periods. This approach simplifies panel design, improves serviceability, and allows future expansion without major cabinet redesign.
2. Safe Switching of Motors and Actuators in Industrial Machinery
Machinery used in packaging, material handling, and automated assembly frequently requires reliable switching between control signals and higher-load devices. The FS 4CO relay socket is installed in machine control panels to provide electrical separation and dependable load handling. Its current capacity supports demanding switching tasks, while the fixed socket wiring allows relays to be replaced without disturbing field connections. This design minimizes maintenance time and reduces the risk of wiring errors. As a result, machine downtime is shortened, and overall system reliability is improved in production-critical environments.
3. Signal Routing for Process Control and Utility Systems
Process automation systems rely on consistent signal handling for alarms, interlocks, and control sequences. The FS 4CO relay socket is used to organize these signals within a structured relay interface that remains stable during continuous operation. Its insulation characteristics and defined contact layout support reliable performance in electrically noisy environments. Multiple changeover contacts allow flexible logic design, enabling safe switching between normal operation, fault conditions, and backup states. This makes the socket suitable for applications such as water treatment, energy management, and industrial monitoring systems.
4. Modular Panel Design for OEM Control System Builders
OEM panel builders often develop standardized control modules that must adapt easily to different customer requirements. The FS 4CO relay socket supports modular design by offering a consistent relay interface that can be reused across multiple projects. Its compatibility with standard DIN rails and common conductor sizes streamlines panel assembly and quality checks. When control logic changes, relays can be exchanged or reassigned without rewiring the panel. This flexibility reduces engineering effort, shortens build time, and helps OEMs deliver scalable and cost-efficient control solutions.