Phoenix Contact MACX MCR-EX-SL-RPSSI-I Signal Isolator
Overview
Phoenix Contact MACX MCR-EX-SL-RPSSI-I (Order No. 2865340) is a DIN-rail Ex i repeater power supply from the MACX MCR product family, designed to interface intrinsically safe 0/4–20 mA field transmitters located in Zone 0, 1, or 2 hazardous areas with standard control-system inputs in the safe area. The unit both powers the connected transmitter and repeats its measured signal through a fully isolated output channel, making it a standard component in analog measurement loops feeding a PLC, DCS, or SCADA system on Ex-classified plants.
As the official trusted supplier and regional supplier for Phoenix Contact, Seven Star LLC proudly supplies the MACX MCR-EX-SL-RPSSI-I and the wider MACX MCR isolator range to end users, EPC contractors, and system integrators throughout the Sultanate of Oman and the GCC. Every unit is supplied with manufacturer ATEX/IECEx documentation and local technical support, giving instrumentation teams in Muscat, Sohar, and Salalah a dependable source for certified Ex i isolators, with lead time confirmed at quotation.
Operating Principle
The MACX MCR-EX-SL-RPSSI-I limits the voltage and current it can deliver to the field-side loop to values that cannot generate an ignition-capable spark or hot surface in the specified gas group, so the transmitter circuit itself qualifies as intrinsically safe regardless of the conditions on the safe-area side. Internally the unit provides three-way electrical isolation between the intrinsically safe field circuit, the repeated output signal, and the auxiliary supply, so a fault on the safe-area side—including an accidental short circuit or overvoltage—cannot be transmitted back into the hazardous-area wiring.
Because the Phoenix Contact MACX MCR-EX-SL-RPSSI-I is transparent to bidirectional HART communication, a handheld communicator or host-based asset-management system in the control room can poll, configure, and diagnose the connected field transmitter exactly as if wired directly, without losing any digital diagnostic data across the isolator. The practical consequence for a plant is a measurement loop that delivers certified intrinsic safety together with full HART-based predictive-maintenance visibility, satisfying both the electrical safety case and the reliability program in one device.
Engineering Design of the Phoenix Contact MACX MCR-EX-SL-RPSSI-I
The MACX MCR-EX-SL-RPSSI-I is built into a slim 12.5 mm wide DIN-rail housing that clips directly onto standard 35 mm rail inside a marshalling cabinet, allowing dense packing of isolator channels where panel space is constrained. Pluggable screw terminal blocks separate the field-side wiring from the system-side and power connections, so a faulty module can be swapped out during a shutdown without disturbing the surrounding field cabling.
On the Phoenix Contact MACX MCR-EX-SL-RPSSI-I, the unit accepts a measuring-transducer supply voltage above 16 V and is itself designed for mounting in Zone 2 areas under protection type ec per EN 60079-7, giving flexibility for cabinets located closer to the classified process area rather than only in a fully safe control room. On the Phoenix Contact MACX MCR-EX-SL-RPSSI-I, a front-panel status LED provides immediate visual confirmation of power and channel health, which speeds up troubleshooting during commissioning and routine loop checks on regional process plants.
Key Features
The Phoenix Contact MACX MCR-EX-SL-RPSSI-I combines certified intrinsic safety with compact, maintenance-friendly panel design. The Phoenix Contact MACX MCR-EX-SL-RPSSI-I’s key features include:
- Ex i field circuit rated for Zones 0, 1, and 2 under ATEX (BVS 08 ATEX E 054X) and IECEx (BVS 08.0016X) approval.
- Transparent bidirectional HART signal transmission for full field-transmitter diagnostics.
- Three-way galvanic isolation between the field circuit, output signal, and auxiliary supply.
- SIL 2 rated per IEC 61508 for use in safety instrumented functions.
- Compact 12.5 mm DIN-rail housing permitted for direct mounting in Zone 2 areas.
- Active or passive 0/4–20 mA output signal supporting up to 1000 Ω load.
- UL Listed and cUL Listed alongside ATEX/IECEx for multi-standard international projects.
- Pluggable terminal blocks for rapid module replacement without field rewiring.
Industrial Applications
The MACX MCR-EX-SL-RPSSI-I is specified wherever a 4–20 mA pressure, level, flow, or temperature transmitter installed in a classified hazardous area must report to a control system housed in a safe area. Typical applications include tank farm and vessel level and pressure transmitters, wellhead and pipeline instrumentation, compressor and pump process signals, and SIL-rated safety instrumented loops where documented isolation and repeatable failure modes are required by the plant’s functional safety case. The Phoenix Contact MACX MCR-EX-SL-RPSSI-I’s transparent HART pass-through also supports asset-management programs that need live transmitter diagnostics from the control room without additional wiring.
In Oman and the GCC, Seven Star LLC supplies the MACX MCR-EX-SL-RPSSI-I to upstream and downstream oil and gas operators, refineries, and petrochemical complexes across Oman and the wider GCC, including projects in the Sohar and Salalah free zones and Duqm’s expanding industrial base. Instrumentation teams standardizing marshalling-cabinet designs around a single isolator platform, or replacing obsolete units during a control-system migration, rely on our documentation support and confirmed lead times to keep commissioning schedules on track.
Technical Specifications
The table below summarizes the principal ratings for the Phoenix Contact MACX MCR-EX-SL-RPSSI-I Ex i repeater power supply.
| Parameter | Specification |
|---|---|
| Model | MACX MCR-EX-SL-RPSSI-I (Order No. 2865340) |
| Function | Ex i repeater power supply / signal isolator |
| Input Signal | 0/4–20 mA, supplied or active, intrinsically safe |
| Output Signal | 0/4–20 mA, active up to 1000 Ω load, or passive |
| Supply Voltage | Measuring transducer supply >16 V, DIN-rail connector powered |
| Isolation | 3-way galvanic isolation, field / output / power |
| Housing Width | 12.5 mm, standard 35 mm DIN rail mounting |
| Hazardous Area Approval | ATEX BVS 08 ATEX E 054X; IECEx BVS 08.0016X, Zones 0/1/2 |
| Functional Safety | SIL 2 per IEC 61508 |
| Additional Certification | UL Listed (E330267), cUL Listed, TUEV Austria FS |
| Zone 2 Mounting | Permitted per EN 60079-7, protection type ec |
Request a Quote for Phoenix Contact MACX MCR-EX-SL-RPSSI-I
For the Phoenix Contact MACX MCR-EX-SL-RPSSI-I, instrumentation and EPC teams across Oman and the GCC can request a formal quotation for the Phoenix Contact MACX MCR-EX-SL-RPSSI-I Ex i signal isolator directly from Seven Star LLC’s instrumentation division. In Oman and the GCC, we supply on request with lead time confirmed at quotation, provide the full ATEX/IECEx technical datasheet on request, and support marshalling-cabinet specification, replacement, and SIL documentation for both new-build and brownfield hazardous-area projects. Contact our team today to confirm lead time, pricing, and certification paperwork for your next shutdown or turnaround.
Browse the full Phoenix Contact range or see more Isolator & Barrier products supplied by Seven Star LLC in Oman and the GCC.
- datasheet MACX MCR-EX-SL-RPSSI-I Datasheet Download
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Phoenix Contact items are ordered by a seven-digit order number together with the type designation, both printed on the side of the module. Send both, plus the quantity. If the number is unreadable, send the type text and a photo. For power supplies, state input voltage, output current and whether the unit runs in parallel or with a redundancy module. For buyers in the GCC replacing an older unit, we check the manufacturer's documentation for the listed successor type.Browse Phoenix Contact products by category: Isolator & Barrier, Power Modules, Automation Accessories.
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