R. STAHL / R. Stahl AG Explosion-Protected Electrical Equipment and Automation
Technical specifications and equipment selection of German-engineered explosion-protected electrical equipment, IS1+ remote I/O systems, safety barriers, and luminaires by R. STAHL / R. Stahl AG.
IS1+ Remote I/O System for Hazardous Zones 1 and 2
The explosion-protected IS1+ system by R. STAHL / R. Stahl AG provides high-performance distributed I/O in Zones 1 and 2. Upgraded CPUs and power modules manage up to 16 I/O modules per node (128 analog or 256 discrete signals) with connectivity via PROFIBUS DP, PROFINET S2, and 100BASE-TX-IS.
- Zone 1 and Zone 2 intrinsically safe design
- Up to 16 I/O modules per individual node
- PROFIBUS DP, PROFINET S2 and OPC UA buses
- Up to 128 analog or 256 discrete channels
ISpac Safety Barriers and Relay Modules 9174 / 9177
ISpac galvanic isolators and slim 12 mm relay modules 9174 and 9177 from R. STAHL / R. Stahl AG provide dependable hazardous area isolation. Electronic modules 9174/12-15-01 switch AC loads up to 5 A wear-free, while electromechanical 9177 relays feature gold-plated contacts rated up to 2 A.
- Slim 12 mm housing saving cabinet space
- Electronic wear-free switching up to 5 A
- Gold-plated contacts for mA signals
- Ex i and Ex e protection with SIL ratings
EXLUX Linear and Emergency LED Luminaires 6002 / 6209
Linear and emergency luminaires EXLUX 6002, 6402, and 6209 by R. STAHL / R. Stahl AG provide safe illumination across hazardous Zones 1, 2, 21, and 22. The robust glass-fiber reinforced polyester housing features a central locking mechanism and built-in backup battery options for 1.5 or 3 hours.
- High-efficiency LEDs exceeding 100,000 hrs
- Integrated battery backup for 1.5 to 3 hrs
- Rugged GRP enclosure with IP66 protection
- All-pole disconnection upon unlock
Explosion-Protected Enclosures and Terminal Boxes 8151 / 8146
Terminal boxes and control cabinets 8151 and 8146 from R. STAHL / R. Stahl AG utilize AISI 316L stainless steel and glass-fiber polyester. Flameproof Ex d enclosures 8264 and 8265 shield motor starters, circuit breakers, and switches in harsh marine environments with IP66 ingress protection.
- Corrosion-resistant AISI 316L steel build
- Flameproof Ex d series 8264 and 8265 shells
- IP66 industrial ingress protection rating
- Custom terminal and switchgear layout
Ethernet-APL Field Switches for Hazardous Locations
Ethernet-APL field switches from R. STAHL / R. Stahl AG combine industrial switch networking and intrinsic safety barriers for installation in Zones 1 and 2. Operating at 10 Mbit/s across single twisted pairs up to 1000 m, they deliver simultaneous power to field instruments per 2-WISE standards.
- Zone 1 and Zone 2 direct installation
- 10 Mbit/s bandwidth over 1000 m line
- Single twisted pair 2-WISE safety scheme
- Direct IP connectivity to field sensors
Grounding Monitoring and Static Control Systems Series 8485
Grounding monitoring devices Series 8485 by R. STAHL / R. Stahl AG provide active and continuous verification during loading of flammable liquids and bulk materials. The unit measures clamp resistance and automatically interlocks pumping processes if electrical grounding contact is disrupted.
- Active continuous earth loop monitoring
- Automatic interlock for filling pumps
- Intrinsically safe heavy-duty clamps
- Protection against electrostatic discharge
Design Features of Flameproof Ex d Enclosures Series 8264 and 8265
German manufacturer R. STAHL / R. Stahl AG develops heavy-duty flameproof Ex d enclosures series 8264 and 8265 for electrical switchgear, motor control starters, variable frequency drives, and programmable automation units in Zone 1 and Zone 2 hazardous locations.
The enclosures are manufactured from copper-free marine alloy or welded AISI 316L stainless steel. Precision-machined joint gaps cool internal ignition gases below external atmosphere ignition temperatures during internal deflagration.
Modular construction permits direct coupling of multiple flameproof enclosures with increased safety Ex e terminal chambers into comprehensive low-voltage control assemblies.
IS1+ Remote I/O Architecture for Hazardous Process Automation
The IS1+ distributed remote I/O system from R. STAHL / R. Stahl AG provides high-density signal acquisition and actuator control directly in Zone 1 and Zone 2 hazardous areas without bulky explosion-proof housings.
Upgraded CPU modules 9442 and switch-mode power supplies 9444 accommodate up to 16 I/O modules on a single DIN mounting rail. A single remote station handles up to 128 analog channels with full HART transparency or 256 discrete signals from NAMUR proximity sensors and solenoid valves.
Data exchange with host control systems operates through redundant PROFINET, PROFIBUS DP, Modbus TCP, and EtherNet/IP media supporting ring topologies.
Solid-State LED Technology and Battery Systems in EXLUX Luminaires
The EXLUX family of linear luminaires 6002, 6402, and emergency models 6209 by R. STAHL / R. Stahl AG delivers high-efficiency illumination across petrochemical refineries, offshore platforms, and pharmaceutical cleanrooms.
The enclosure is molded from glass-fiber reinforced polyester resistant to ultraviolet exposure, saline mist, and corrosive chemical vapors. The impact-resistant polycarbonate diffuser distributes wide photometric curves without glare.
Emergency units feature built-in nickel-cadmium or lithium battery packs that provide emergency lighting for 90 or 180 minutes during primary power grid interruptions.
Intrinsically Safe ISpac Isolators and Slim Relay Modules 9174 / 9177
The ISpac galvanic isolator series and compact 12 mm relay modules 9174 and 9177 by R. STAHL / R. Stahl AG supply signal conditioning and intrinsically safe interface routing in electrical control cabinets.
Modules snap directly onto DIN rails with pac-Bus backplanes that route supply voltage and common fault signals without point-to-point wiring. Electronic solid-state relays 9174 switch AC loads up to 5 A without contact degradation or sparking.
Electromechanical units 9177 utilize gold-plated contacts that prevent surface oxidation and ensure reliable signal continuity in safety instrumented systems rated SIL 2 and SIL 3.
Digital Ethernet-APL Field Switches and 2-WISE Network Topology
Ethernet-APL field switches from R. STAHL / R. Stahl AG drive process digitalization by merging high-speed data transmission and 2-WISE intrinsic safety power over single twisted-pair cabling per IEEE 802.3cg.
Operating at full-duplex 10 Mbit/s bandwidth over distances up to 1000 meters, each switch delivers power directly to field transmitters while maintaining intrinsically safe electrical limits.
This single Ethernet infrastructure enables continuous IP communication from control rooms down to field transmitters without protocol conversion units or proprietary fieldbus barriers.
Active Electrostatic Earth Loop Monitoring Systems Series 8485
Grounding monitoring devices Series 8485 by R. STAHL / R. Stahl AG prevent electrostatic ignition hazards during transfer and loading of volatile hydrocarbons, flammable solvents, and fine combustible powders.
The instrument injects an intrinsically safe high-frequency measuring signal to verify electrical continuity between heavy-duty clamp jaws and storage tank shells. The intelligent evaluation circuit verifies proper vessel impedance and prevents deceptive circuit completion on structural steelwork.
If earth contact resistance exceeds calibrated thresholds, internal interlock relays immediately interrupt transfer pump circuits.
R. STAHL / R. Stahl AG and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of R. STAHL / R. Stahl AG and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
