Description

The ET-436-AT-R2-HB-TX-100GB-V STAHL is a high-performance, intrinsically safe Ethernet terminal module engineered by STAHL for use in hazardous industrial environments where explosion protection and reliable data transmission are paramount. Designed for integration within industrial communication networks in sectors such as oil and gas, chemical processing, and petrochemical plants, the ET-436-AT-R2-HB-TX-100GB-V STAHL provides secure, high-speed 100BASE-TX Ethernet connectivity while complying with stringent ATEX, IECEx, and other international safety standards for use in Zones 1 and 2 (gas) and Zones 21 and 22 (dust). As a member of STAHL’s advanced Ex-i Ethernet solutions series, this device enables the extension of standard Ethernet networks into classified areas without compromising safety or performance.

Featuring dual 100 Mbps twisted-pair ports with support for redundant ring topologies such as HSR (High-availability Seamless Redundancy) and MRP (Media Redundancy Protocol), the ET-436-AT-R2-HB-TX-100GB-V STAHL ensures network resilience and minimal downtime in mission-critical applications. Its ruggedized housing, corrosion-resistant materials, and IP66/IP67-rated enclosure make it suitable for harsh outdoor and indoor environments exposed to extreme temperatures, moisture, and chemical agents. The modular design supports hot-swapping and easy integration with existing control infrastructures, including DCS, SCADA, and PLC systems from major automation vendors. As a trusted solution for hazardous location networking, the ET-436-AT-R2-HB-TX-100GB-V STAHL delivers a critical bridge between safe-area control rooms and field-level instrumentation, enabling real-time monitoring, diagnostics, and remote configuration in explosive atmospheres.

ET-436-AT-R2-HB-TX-100GB-V STAHL

Technical Specifications

Product Model | ET-436-AT-R2-HB-TX-100GB-V STAHL
Manufacturer | STAHL
Product Type | Intrinsically Safe Ethernet Terminal Module
Data Rate | 100 Mbps (100BASE-TX)
Interface Type | 2 x RJ45 (Shielded)
Communication Protocol | Ethernet/IP, PROFINET, Modbus TCP, HART-IP
Topology Support | Linear, Star, Ring (MRP, HSR compatible)
Intrinsic Safety Rating | ATEX, IECEx, UL/CSA Class I Div 1/2
Protection Rating | IP66 / IP67
Operating Temperature | -40°C to +70°C
Power Supply | 20–30 VDC (Redundant Input Supported)
Installation Type | DIN Rail or Wall Mount
Conformity | IEC 60079-0, IEC 60079-11, IEC 60079-26, EN 61000

Main Features and Advantages

The ET-436-AT-R2-HB-TX-100GB-V STAHL stands out for its exceptional safety certification and robust performance in hazardous locations, offering a future-proof solution for industrial Ethernet deployment where fire or explosion risks are a constant concern. Its intrinsic safety (Ex-i) design eliminates the need for bulky explosion-proof enclosures, reducing installation footprint and simplifying cable routing while maintaining compliance with the highest safety standards. This makes the ET-436-AT-R2-HB-TX-100GB-V STAHL ideal for retrofitting legacy systems or building new networks in confined or space-limited areas.

Another key advantage is its support for network redundancy protocols, ensuring uninterrupted communication even during cable faults or device failures. The dual-port architecture enables daisy-chaining or ring formation, minimizing single points of failure across the network. The ET-436-AT-R2-HB-TX-100GB-V STAHL also features integrated diagnostic LEDs and remote monitoring capabilities via SNMP, allowing maintenance teams to quickly identify link status, traffic load, and fault conditions. Its wide operating temperature range and resistance to vibration and electromagnetic interference further enhance reliability in extreme industrial conditions. With minimal configuration required and compatibility with major industrial protocols, the ET-436-AT-R2-HB-TX-100GB-V STAHL reduces engineering time and integration complexity, offering a plug-and-play solution that accelerates project deployment while ensuring long-term operational stability.

Application Field

The ET-436-AT-R2-HB-TX-100GB-V STAHL is specifically engineered for deployment in high-risk industrial environments where flammable gases, vapors, or combustible dusts are present. It is widely used in offshore and onshore oil and gas production facilities, including drilling platforms, refineries, and LNG terminals, where reliable Ethernet connectivity is essential for process monitoring, safety shutdown systems, and asset management. In chemical and pharmaceutical manufacturing plants, the ET-436-AT-R2-HB-TX-100GB-V STAHL facilitates secure data exchange between control rooms and field devices such as flow meters, pressure transmitters, and control valves located in classified zones.

It also plays a critical role in pipeline monitoring systems, tank farms, and loading/unloading stations, where real-time data from remote sensors must be transmitted without risking ignition. The ET-436-AT-R2-HB-TX-100GB-V STAHL enables integration of wireless access points, video surveillance cameras, and remote I/O modules into the central control network, enhancing situational awareness and operational efficiency. In mining and bulk material handling operations, it supports communication in dust-prone areas, ensuring uninterrupted connectivity for conveyor control and environmental monitoring systems. By enabling safe, high-speed Ethernet links in hazardous areas, the ET-436-AT-R2-HB-TX-100GB-V STAHL helps industries meet safety regulations while advancing digital transformation and Industry 4.0 initiatives.

Related Products

ET-436-AT-R2-FX-100GB-V STAHL: Fiber optic version of the same series, ideal for long-distance, EMI-immune communication in extended hazardous area networks.
ET-436-AT-R1-HB-TX-100GB-V STAHL: Single-port variant for linear topologies or point-to-point connections, offering cost-effective deployment for simpler networks.
ET-436-AT-R2-HB-GT-1000GB-V STAHL: Gigabit Ethernet version for high-bandwidth applications requiring faster data transfer rates in hazardous locations.
STAHL Ex-i Ethernet Gateway Series: Broader family of intrinsically safe network devices, including serial-to-Ethernet converters and protocol gateways.
STAHL Ex-i Power Supply Modules: Complementary power solutions designed to supply isolated, intrinsically safe power to the ET-436-AT-R2-HB-TX-100GB-V STAHL and associated field devices.
STAHL FieldBox Enclosures: Compatible rugged enclosures for mounting and protecting the ET-436-AT-R2-HB-TX-100GB-V STAHL in exposed outdoor environments.
STAHL Network Management Software: Centralized configuration and monitoring tool for managing multiple ET-436-AT-R2-HB-TX-100GB-V STAHL units across large-scale installations.

ET-436-AT-R2-HB-TX-100GB-V STAHL

Installation and Maintenance

Pre-installation preparation: Before installing the ET-436-AT-R2-HB-TX-100GB-V STAHL, ensure that the site complies with all applicable hazardous area classifications and that all cabling meets intrinsic safety requirements, including the use of approved barriers, isolators, and shielded twisted-pair cables. Verify power supply voltage and grounding integrity, and confirm network topology design to support redundancy if required. Mount the device on a standard DIN rail or wall surface in a location accessible for inspection, ensuring adequate ventilation and protection from direct water ingress or mechanical impact. All connections must be made with the power disconnected to maintain intrinsic safety integrity.

Maintenance recommendations: The ET-436-AT-R2-HB-TX-100GB-V STAHL requires minimal maintenance due to its solid-state design and lack of moving parts. Regularly inspect the enclosure seals, connectors, and cabling for signs of corrosion, wear, or damage, especially in coastal or high-humidity environments. Utilize the built-in LED indicators to monitor link status, activity, and error conditions during routine checks. For optimal performance, clean the exterior with a damp cloth and non-abrasive cleaner, avoiding high-pressure water jets. Firmware updates and configuration backups should be performed periodically using the manufacturer’s network management tools to ensure compatibility and security. The robust design of the ET-436-AT-R2-HB-TX-100GB-V STAHL ensures long service life with proper installation and periodic visual inspections.