In industrial automation and electrical control systems, even the smallest components play a vital role in overall reliability. Relay sockets are one such critical element. They act as the connection point between control logic and the relay, directly affecting safety, performance, and ease of maintenance.
The ERS-15 Series Relay Sockets from Essen Deinki are designed to deliver long-lasting performance, strong electrical stability, and safe operation in demanding industrial environments.
Overview of the ERS-15 Series
The ERS-15 Series is a range of finger-safe relay sockets suitable for both 2-pole and 4-pole relays. These sockets provide a secure relay mounting solution while protecting operators during installation and servicing.
Available Variants
- ERS 15/2M – 2-Pole Relay Socket
- ERS 15/4M – 4-Pole Relay Socket
A customized version of the ERS 15/4M is also available, with selected terminals removed to support special wiring requirements. This allows better panel layout flexibility without changing the standard footprint.
High-Quality Materials & Thermal Performance
For long-term use, material quality is essential. The ERS-15 Series is manufactured using UL94V-0 flame-retardant thermoplastic, which helps reduce fire risk inside control panels.
Temperature Resistance
These relay sockets are built to operate reliably across a wide temperature range:
- –45°C to +120°C
This makes them suitable for harsh environments such as outdoor panels, heavy machinery, and high-temperature industrial areas.
Electrical Specifications
The ERS-15 Series meets international standards and offers stable electrical performance:
| Feature | Specification |
| Standards | EN 60947-5-1, IEC 947-5-1 |
| Rated Current | 10A |
| Rated Voltage | 300V AC |
| Dielectric Strength | >2.5 kV (1 minute) |
| Insulation Resistance | ≥ 1000 MΩ |
| Contact Resistance | ≤ 10 mΩ |
These specifications ensure consistent operation and reduced risk of electrical failure over time.
Easy Installation & Enhanced Safety
Flexible Mounting Options
ERS-15 relay sockets can be installed using:
- DIN Rail Mounting (EN 50022)
- Surface Mounting with M3 screws
Secure Terminal Design
- Combi screw terminals (M3)
- Supports wire size up to 2 × 2.5 sq. mm
- Recommended tightening torque: 8 Nm
The IP20 finger-safe protection helps prevent accidental contact with live parts, improving operator safety during maintenance.
Optional LED Modules & Accessories
To improve system monitoring and maintenance, the ERS-15 Series supports plug-in modules and accessories.
LED Indicator & Protection Modules
- LED indication for quick status checking
- Polarity reversal protection
- Available for DC and AC voltage ranges
Custom modules can also be developed on request.
Useful Accessories
- Hold Down Spring (RCE) – Prevents relay loosening due to vibration
- Hold Down Spring with Ejector (HDE) – Easy relay removal during servicing
- Marking Plate (MPI) – Clear circuit identification for maintenance and audits
Compact Design for Control Panels
The ERS-15 Series offers a compact and space-saving design, ideal for high-density panels.
Key Dimensions:
- Height: 46.5 mm
- Base Length: 75 mm
- Width: 27 mm
- Terminal Pitch: 5 mm
Its slim profile allows multiple sockets to be mounted neatly on a single DIN rail.
Why Choose ERS-15 Series Relay Sockets?
International Compliance
Certified to global standards, ensuring consistent and safe operation.
Built for Harsh Conditions
Flame-retardant housing and wide temperature tolerance support long service life.
Easy Maintenance
Finger-safe design, clear marking, and ejector accessories reduce downtime.
Conclusion
The ERS-15 Series Relay Sockets offer an ideal combination of safety, durability, and installation flexibility. Whether used in new control panels or system upgrades, they provide reliable performance and reduced maintenance effort.
With quality engineering and thoughtful design, Essen Deinki continues to deliver relay socket solutions that meet modern industrial demands. For applications requiring dependable, finger-safe, and standards-compliant relay connections, the ERS-15 Series is a smart and reliable choice.