Industrial / Electrical
User Manual for R. Stahl SolConeX 125A Explosion-Proof Outlet, Series 8581/31
Quick guide for the R. Stahl SolConeX 125A explosion-proof outlet (Series 8581/31). Includes installation steps, safety requirements for hazardous areas, maintenance procedures, and technical specifications.
Table of contents
Quick guide from the manual
The R. Stahl SolConeX 8581/31 is an explosion-proof outlet designed for use in hazardous areas (Zones 1, 2, 21, and 22). It is intended for connecting portable and fixed electrical equipment. Installation, maintenance, and repair must be performed by qualified personnel familiar with explosion protection standards (e.g., IEC/EN 60079-14, 17, 19).
Safety and Residual Risks
Operating in hazardous environments carries inherent risks. Always ensure the device is undamaged and operated within specified technical limits. Do not modify the device. Before any work, ensure the device is de-energized. Use only damp cloths for cleaning to prevent static accumulation; do not use high-pressure water jets.
Installation and Assembly
The device is suitable for indoor and outdoor use. For outdoor installations, a protective roof or wall is recommended. The hinge cover must face downwards, and the cable entry must face upwards. Secure the unit to a flat surface using three bolts and washers. The mounting holes are slotted for adjustment.
Auxiliary Contacts
The standard version includes one auxiliary contact (1 NC + 1 NO). Up to two 8080/1 auxiliary contacts can be installed. If using Ex i circuits, specific Ex i covers and insulating sleeves are required to maintain the necessary 50 mm clearance between intrinsically safe and non-intrinsically safe circuits.
Operation
Only use R. Stahl 8581/12 plugs. The switch can be locked in the 0 or I position using a padlock (max. diameter 8 mm). Ensure the plug is fully tightened to maintain the IP protection rating.
Maintenance and Repair
Regular inspections should check for housing damage, seal integrity, secure connections, and cleanliness. After any short circuit in the main circuit, the entire socket flange must be replaced as the switch contacts are sealed. Repairs must only be performed by R. Stahl.
Technical Data
- Rated Voltage: Max 690 V AC / 220 V DC
- Rated Current: 125 A
- Protection Rating: IP66
- Operating Temperature: -45 to +60 °C
- Cable Entry: 1 x M63 x 1.5
- Tightening Torque (Housing Screws): 4.5 Nm
Manufacturer information
R. STAHL AG
Practical help
Common problems
Device overheating or static accumulation
Ensure operation is within specified technical limits and clean only with a damp cloth.
Short circuit in main circuit
The entire socket flange must be replaced as contacts are sealed and cannot be inspected.
Oxidation of contact parts
Store in a dry, well-ventilated area and inspect contacts before use.
Before use
- Check that the device is undamaged.
- Verify that all cable glands and plugs are securely tightened.
- Ensure all conductors are properly clamped.
- Check that the supply voltage matches the device rating.
- Ensure unused cable entries are sealed with certified plugs.
Specs in practice
- Ex db eb IIC
- Explosion protection rating for hazardous gas and dust environments.
Images and diagrams
- The device must be mounted with the hinge cover facing down and the cable entry facing up.
- Mounting holes are slotted to allow for vertical and horizontal adjustment.
- Auxiliary contacts are installed by removing the cover and snapping the contact block into the slot.
Model compatibility
- Only compatible with R. Stahl 8581/12 plugs.
- Ex i circuits require specific protective covers and insulating sleeves.
- Use only original R. Stahl spare parts.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.