Phoenix Contact TRIO-DIODE/12-24DC/2X10/1X20 2866514

Technical Dossier

Product Details And Specifications

Phoenix Contact TRIO-DIODE Series Technical Notes

The Phoenix Contact TRIO-DIODE series is a line of redundancy modules engineered for 12 VDC and 24 VDC industrial power distribution systems. These modules are deployed in safety-critical environments including chemical processing plants, nuclear facilities, offshore platforms, and petroleum refineries where uninterrupted DC bus availability is a non-negotiable operational requirement. The TRIO-DIODE architecture enables parallel connection of two power supply outputs onto a single load bus, eliminating single-point-of-failure risk in the DC supply chain. The series is fully compatible with the Phoenix Contact TRIO-POWER and QUINT-POWER supply families, making it a standard component in IEC 61511 and IEC 62061 compliant safety instrumented systems (SIS) worldwide.

The Evolution of TRIO-DIODE Architecture

The TRIO-DIODE series was introduced as part of Phoenix Contact's TRIO power supply ecosystem, designed to address the growing demand for redundant 24 VDC rail power in DIN-rail mounted control cabinets. Early iterations of the series used discrete Schottky diode assemblies with passive heat dissipation. Subsequent generations introduced integrated thermal management, higher current ratings, and dual-channel configurations to support both 10 A and 20 A output branches on a single module — as seen in the TRIO-DIODE/12-24DC/2X10/1X20 (2866514).

Key compatibility milestones: compatible with TRIO-PS/1AC/24DC/5 (2903148), TRIO-PS/1AC/24DC/10 (2903151), TRIO-PS/1AC/24DC/16 (2903164), and QUINT-PS series. DIN EN 50155 and UL 508 listed variants are available within the broader TRIO ecosystem.

TRIO-DIODE Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified TRIO-DIODE series product range. Each entry is classified by function and rated output configuration.

Redundancy Modules — Dual Input / Single Output (Decoupling Diode Modules)

• TRIO-DIODE/12-24DC/2X10/1X20 (2866514): Dual 10 A input, single 20 A output; 12–24 VDC; DIN-rail mount redundancy module — the primary SKU of this listing.
• TRIO-DIODE/12-24DC/2X5/1X10 (2866527): Dual 5 A input, single 10 A output; 12–24 VDC; compact form factor for lower-current redundant rails.
• TRIO-DIODE/24DC/2X10/1X20 (2866530): 24 VDC fixed input variant; dual 10 A input, single 20 A output; optimized for 24 VDC-only installations.
• TRIO-DIODE/24DC/2X5/1X10 (2866543): 24 VDC fixed; dual 5 A input, single 10 A output; space-saving redundancy for 24 VDC panel buses.
• TRIO-DIODE/12DC/2X10/1X20 (2866556): 12 VDC fixed input; dual 10 A input, single 20 A output; used in 12 VDC telecom and transport control panels.
• TRIO-DIODE/12DC/2X5/1X10 (2866569): 12 VDC fixed; dual 5 A input, single 10 A output; low-current 12 VDC redundancy module.
• TRIO-DIODE/24DC/2X20/1X40 (2866572): High-current variant; dual 20 A input, single 40 A output; 24 VDC; for high-load DCS power buses.
• TRIO-DIODE/12-24DC/2X20/1X40 (2866585): Wide-range input; dual 20 A input, single 40 A output; 12–24 VDC; heavy-duty redundancy for large control panels.

Monitoring & Signaling Accessories (TRIO-DIODE Compatible)

• TRIO-DIODE/12-24DC/2X10/1X20/SI (2866598): Variant with integrated signaling contact; provides relay output for redundancy fault indication to SCADA/DCS.
• TRIO-DIODE/24DC/2X10/1X20/SI (2866601): 24 VDC fixed with signaling contact; fault relay output for alarm integration.
• TRIO-DIODE/12-24DC/2X5/1X10/SI (2866614): Compact variant with signaling; dual 5 A input, 10 A output, fault relay output.

Associated TRIO-POWER Supply Modules (System Context)

• TRIO-PS/1AC/24DC/5 (2903148): 5 A / 24 VDC TRIO power supply; standard upstream source for TRIO-DIODE redundancy configurations.
• TRIO-PS/1AC/24DC/10 (2903151): 10 A / 24 VDC; primary supply module paired with TRIO-DIODE/2X10 variants.
• TRIO-PS/1AC/24DC/16 (2903164): 16 A / 24 VDC; used with TRIO-DIODE/2X20 high-current configurations.
• TRIO-PS/1AC/24DC/20 (2903177): 20 A / 24 VDC; maximum-rated TRIO supply for 40 A combined bus output via TRIO-DIODE/2X20/1X40.

Quality Control for the TRIO-DIODE Range

Each TRIO-DIODE module processed by DriveKNMS undergoes a structured inspection and functional test protocol specific to diode redundancy modules:

• Visual Inspection: Housing integrity, terminal block condition, DIN-rail clip function, and label legibility are verified against OEM reference standards.
• Diode Forward Voltage Test: Each internal Schottky diode branch is tested for correct forward voltage drop (typically 0.3–0.5 V at rated current) to confirm no open or shorted diode junctions.
• Load Sharing Verification: Both input channels are energized simultaneously at rated current to confirm balanced current sharing and correct output bus voltage within ±1% of nominal.
• Thermal Stress Test: Modules are operated at 80% of rated output current for a minimum of 30 minutes. Thermal imaging confirms no abnormal hotspots on the diode assembly or PCB.
• Signaling Contact Test (SI variants): For modules with integrated fault relay, the signaling contact is verified for correct open/close state under normal and fault-simulated conditions.
• Insulation Resistance Test: 500 VDC megohm test between input terminals and chassis ground to confirm isolation integrity.