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QUINT-DIODE/40 (2938963) is a 24VDC diode redundancy module manufactured by Contacto Fénix. It is designed for parallel redundancy of two 20A power supplies or capacity expansion for a single 40A circuit. This model is discontinued. The official replacement is QUINT4-DIODE/12-24DC/2X20/1X40 (2907719). It features reverse polarity protection, caída de voltaje baja (0.5V) and efficiency over 97%, ideal for critical systems such as industrial automation and process control.
- Explicación del código del modelo
| Segmento de modelo | Descripción |
| QUINT | Product line identifier for Phoenix QUINT POWER power supplies |
| DIODE | Diode-type redundancy module (passive redundancy, no active current sharing) |
| 40 | Maximum output current: 40A (supports 2×20A redundant input) |
| Número de pedido. | 2938963 (Unique factory part number) |
| Reemplazo de actualización | QUINT4-DIODE/12-24DC/2X20/1X40 (Nro. de orden: 2907719) |
- Especificaciones técnicas básicas
| Categoría | Presupuesto |
| Características eléctricas | |
| Voltaje de entrada | 24VCC (Rango: 0~30VDC) |
| Rated Input Current | 2×20A (Redundancy Mode) / 1×40A (Capacity Expansion Mode) |
| máx.. Corriente de salida | 40A (a 40°C, with 6mm² cable) |
| Voltage Drop | 0.5V (Input to Output) |
| Eficiencia | >97% |
| Reverse Polarity Protection | Sí (<60V) |
| Transient Surge Protection | Transil Diode |
| Características mecánicas | |
| Tipo de montaje | Montaje en carril DIN (NS 35, compatible con EN 60715) |
| Dimensiones (Ancho × Alto × Fondo) | 62mm × 84mm × 102mm |
| Material de la carcasa | Metal (AlMg enclosure, GD-ZnAlCu cooling unit) |
| Peso | 600gramo (without packaging), 683gramo (con embalaje) |
| Environmental Characteristics | |
| Temperatura de funcionamiento | -25°C ~ 70°C (Derating required above 60°C) |
| Temperatura de almacenamiento | -40°C ~ 85°C |
| Protección de ingreso | IP20 (For installation inside enclosed control cabinets only) |
| Clase de protección | Class II (Double insulation) |
| Certificaciones & Fiabilidad | |
| MTBF (@40°C) | 28,571,428 horas (aprox. 3260 años) |
| Marine Certifications | DNV GL (EMC A), ABS |
| Certificación UL | UL/C-UL Listed (UL 508, UL 1604 Clase I, División 2) |
| ATEX Certification | II 3G Ex nA IIC T4 Gc |
| Código HS | 85049090 |
- Marca cruzada & Old/New Model Replacement List
3.1 Original Manufacturer Replacements
| Modelo antiguo | Estado | Modelo de reemplazo | Número de pedido. | Major Improvements |
| QUINT-DIODE/40 | Interrumpido | QUINT4-DIODE/12-24DC/2X20/1X40 | 2907719 | Extended operating temperature: -40°C~60°C; 12-24VDC wide voltage range; optimized heat dissipation |
| QUINT-DIODO/12-24DC/2X20/1X40 | Activo | QUINT4-DIODE/12-24DC/2X20/1X40 | 2907719 | In-series upgrade with enhanced performance |
| QUINT-DIODE/48DC/2X20/1X40 | Activo | QUINT4-DIODE/48DC/2X20/1X40 | 2907720 | Upgrade for 48VDC version |
3.2 Cross-Brand Compatible Replacements
| Marca | Modelo | Corriente nominal | Rango de voltaje | Características |
| Weidmüller | UR 24DC/2×20/1×40 | 40A | 24VCC | Diode redundancy, Montaje en carril DIN |
| WAGO | 289-602 | 40A | 24VCC | Diseño compacto, bajo consumo de energía |
| Würth | WE-DD-40 | 40A | 24VCC | Alta confiabilidad, industrial certifications |
| R. STAHL | Serie 8579 | 40A | 24VCC | Explosion-proof certified for hazardous areas |
- Full Product Line List
4.1 QUINT-DIODE Series (Classic Models)
| Modelo | Número de pedido. | Clasificación de voltaje | Clasificación actual | Características |
| QUINT-DIODE/40 | 2938963 | 24VCC | 2×20A / 1×40A | Modelo básico, interrumpido |
| QUINT-DIODO/12-24DC/2X20/1X40 | 2320157 | 12-24VCC | 2×20A / 1×40A | Amplio rango de voltaje, commonly used |
| QUINT-DIODE/48DC/2X20/1X40 | 2320160 | 48VCC | 2×20A / 1×40A | Dedicated for 48VDC systems |
| QUINT-DIODE/48DC/40 | 2866585 | 48VCC | 40A | Protective coating, adecuado para entornos hostiles |
4.2 QUINT4-DIODE Series (Upgraded Models)
| Modelo | Número de pedido. | Clasificación de voltaje | Clasificación actual | Características |
| QUINT4-DIODE/12-24DC/2X20/1X40 | 2907719 | 12-24VCC | 2×20A / 1×40A | Diseño de temperatura amplia: -40°C~60°C |
| QUINT4-DIODE/48DC/2X20/1X40 | 2907720 | 48VCC | 2×20A / 1×40A | Upgrade for 48VDC systems |
4.3 QUINT-ORING Series (Active Redundancy with ACB Current Sharing)
| Modelo | Número de pedido. | Clasificación de voltaje | Clasificación actual | Características |
| QUINT-ORING/24DC/2X20/1X40 | 2320186 | 24VCC | 2×20A / 1×40A | Active current sharing, extended power supply service life |
| QUINT4-S-ORING/12-24DC/1X40 | 2907752 | 12-24VCC | 40A | Intelligent monitoring, compatible with QUINT4 power supplies |
- Entornos de aplicación & Casos de la industria
5.1 Aplicable & Non-Recommended Scenarios
| Escenarios aplicables | Non-Recommended Scenarios |
| Industrial automation control systems (SOCIEDAD ANÓNIMA, DCS) | Long-term high-load systems requiring active current sharing (ORING series recommended) |
| Process control equipment (Petroquímico, Tratamiento de agua) | Unstable power supplies with voltage fluctuation over ±25% |
| Infraestructura (Communication base stations, Centros de datos) | Áreas peligrosas explosivas (Select EX-certified models) |
| Marina & offshore engineering (Marine certifications available) | Instalación exterior sin protección (IP20 rating only) |
| Equipo medico (Compliant with SELV/PELV requirements) | Ambient temperature above 70°C (Derate load or use high-temperature models) |
5.2 Casos de aplicación típicos
- Automobile Production Lines
Solicitud: Two QUINT-PS/1AC/24DC/20 power supplies connected in parallel with QUINT-DIODE/40 for redundancy.
Valor: Ensure continuous operation of welding robots and PLC systems, and reduce production downtime losses.
- Petrochemical Process Control
Solicitud: Redundant power configuration for Safety Instrumented Systems (SIS).
Valor: Cumple con IEC 61508, provides SIL 2 safety level and prevents safety accidents caused by power failure.
- Smart Grid Monitoring Systems
Solicitud: Dual power redundancy for Remote Terminal Units (RTU).
Valor: Maintain communication and data acquisition under extreme weather conditions to guarantee stable grid operation.
- Solución de problemas & Maintenance Manual
6.1 Fallos comunes, Causas & Soluciones
| Fenómeno de falla | Posibles causas | Soluciones |
| Abnormally low output voltage | 1. Excessive forward voltage drop of internal diodes | 1. Verify input voltage within 0~30VDC |
| 2. Insufficient input voltage | 2. Check and retighten terminals | |
| 3. Loose terminal connections | 3. Test internal diodes with multimeter diode mode | |
| Severe overheating | 1. Overloaded current | 1. Ensure load current does not exceed 40A (derate per cable specification) |
| 2. Mala disipación del calor | 2. Reserve sufficient clearance for heat dissipation (50mm top & abajo) | |
| 3. Temperatura ambiente excesivamente alta | 3. Lower ambient temperature or add ventilation | |
| Failed parallel operation of power supplies | 1. Reverse wiring polarity | 1. Recheck wiring polarity |
| 2. Excessive voltage difference between two inputs | 2. Keep voltage difference between two power supplies within 1V | |
| 3. Open-circuit internal diode | 3. Replace the faulty module | |
| Malfunction of reverse current protection | 1. Damaged reverse polarity protection diode | 1. Limit input voltage below 30VDC |
| 2. Input voltage over 60V | 2. Replace internal protection diode | |
| 3. Install external surge suppressor |
6.2 On-site Quick Diagnosis Procedure
- Inspección visual
Check housing for burn marks, deformation or discoloration.
Inspect terminals for looseness, oxidation and corrosion.
Remove dust accumulated on heat sinks which impairs heat dissipation.
- Electrical Testing
Measure input voltage to confirm it is within 0~30VDC.
Measure output voltage (normally input voltage minus 0.5V).
Test diode forward/reverse resistance: normal state is forward conduction and reverse cut-off.
- Function Verification
Disconnect one power supply and confirm the other works normally.
Restore dual power input and check uniform load distribution.
Measure temperature rise: shall not exceed ambient temperature +30°C.
- Directrices de selección & Reglas de referencia rápida
- Three Key Selection Factors: Clase de voltaje (24/48VCC), Current demand (≤40A), Redundancy mode (2×20A or 1×40A)
- Replacement Rule: QUINT-DIODE/40 is replaced by QUINT4-DIODE/12-24DC/2X20/1X40 (2907719), fully backward compatible.
- Current Derating Rules:
6cable mm²: 39A @ 40°C, 32A @ 60°C
10cable mm²: 54A @ 40°C, 43A @ 60°C
16cable mm²: 60A @ 40°C, 48A @ 60°C
- Requisitos de instalación: Horizontal or vertical DIN rail mounting; reserve 50mm clearance top and bottom for heat dissipation, 5mm clearance on left and right sides.
