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Schneider Electric A9L065300 (iPRU 65-3P) is a Type II pluggable Surge Protection Device (SPD), specially designed for three-phase three-wire power distribution systems. With a maximum discharge current of 65kA and a continuous operating voltage of 350V, it is suitable for surge protection in industrial and commercial power distribution systems.
Parámetros técnicos básicos
| Elemento de parámetro | Valor | Observaciones |
| Modelo | A9L065300 (iPRU 65-3P) | 3-pole version without remote signalling |
| Protector Type | Type II (IEC 61643-11/GB 18802.1) | Secondary surge protection for power distribution systems |
| Protection Technology | MOV (Varistor de óxido metálico) | Common-mode protection (L-PE) |
| Rated Operating Voltage Ue | 230/400V AC 50/60Hz | Suitable for three-phase three-wire systems |
| Maximum Continuous Operating Voltage Uc | 350V (L-PE) | Common-mode protection voltage level |
| Nominal Discharge Current In | 35el (8/20μs) | Surge current withstanding capacity |
| Maximum Discharge Current Imax | 65el (8/20μs) | Peak surge current shunting capacity |
| Voltage Protection Level Up | ＜1.5kV (L-PE) | Limits overvoltage to a safe range |
| Tiempo de respuesta | ≤25ns | Rapid suppression of transient overvoltage |
| Pole Count | 3PAG | Three-phase three-wire system (no neutral wire protection) |
| Earthing System | TN-C | Suitable for three-phase three-wire earthing system |
| Método de montaje | DIN Rail (35milímetros) | Standard distribution cabinet installation |
| Dimensiones (Alto×Ancho×Profundidad) | 85mm×54mm×64mm | Compact design, saves cabinet space |
| Capacidad de cableado | Solid wire 2.5–35mm², Flexible wire 2.5–25mm² | Tunnel-type terminals, support top and bottom wiring |
| Recommended Cable | L wire 4mm², PE wire 6mm² | Ensures conductivity and heat dissipation performance |
| Tightening Torque | 3.5Nm | Terminal connection specification, prevents loosening |
| Protection Degree | Front panel IP40, Terminals IP20 | Dustproof and moistureproof, safe protection |
| Temperatura de funcionamiento | −25°C to +60°C | Adapts to temperature fluctuations in industrial environments |
| Período de garantía | 18 meses | Product quality and performance guarantee |
Functional Features
- Pluggable Design: Modular structure supports online hot-swapping of protection modules without power outage, improving maintenance efficiency and power supply continuity.
- Indicación de estado: Mechanical window (white/red) intuitively displays working status – white indicates normal operation, red indicates module replacement is required, facilitating inspection and fault early warning.
- Safety and Reliability: Complies with RoHS/REACH environmental standards, adopts lead-free technology, suitable for TN-C earthing system, ensuring the safety of personnel and equipment.
- Strong Adaptability: Compatible with standard DIN rail installation, compact size fits most distribution cabinets, supports top and bottom wiring with flexible connection.
Puntos de instalación y mantenimiento
- Especificaciones de instalación
Install on the incoming side of the distribution cabinet, and connect a 10–16A circuit breaker or fuse in series at the front end to avoid short-circuit fault spread.
Strictly follow the corresponding wiring of L1, L2 and L3, ensure reliable PE wire connection, with earthing resistance ≤4Ω.
Minimize cable length (≤50cm) to reduce the impact of line impedance on protection performance.
- Recomendaciones de mantenimiento
Regularly check the mechanical indication window; replace the module immediately if it turns red.
Retest the earthing resistance and terminal tightness annually to ensure protection effectiveness.
Shorten the inspection cycle to once a quarter in surge-prone areas (such as lightning strike areas).
Selection and Application Scenarios
Escenarios aplicables: Industrial production lines, commercial building power distribution, front-end of UPS in data centers, three-phase motor control circuits and other occasions requiring secondary surge protection.
Selection Tips
For three-phase four-wire systems (3P+N), it is recommended to select A9L065600 (iPRU 65-3P+N).
For remote signalling function (remote status monitoring), A9L065401 (iPRU 65r-4P) is optional, suitable for TN-S systems.
With high surge withstanding capacity, fast response and convenient maintenance, A9L065300 (iPRU 65-3P) has become an optimal solution for secondary surge protection in three-phase three-wire power distribution systems. It is widely used in industrial and commercial scenarios, effectively protecting electrical equipment from transient overvoltage damage.
The following is the parameter comparison, selection differences and replacement suggestions of core models of Schneider Electric iPRU 65 Serie (Type II pluggable SPD), facilitating quick matching of surge protection needs for three-phase power distribution systems.
- Parameter Comparison Table of Core Models in iPRU 65 Serie
| Elemento de parámetro | A9L065300 | A9L065600 | A9L065401 | A9L065402 |
| (iPRU 65-3P) | (iPRU 65-3P+N) | (iPRU 65r-3P+N) | (iPRU 65r-4P) | |
| Full Model Name | iPRU 65-3P | iPRU 65-3P+N | iPRU 65r-3P+N | iPRU 65r-4P |
| Configuración de polos | 3PAG (Three-phase three-wire) | 3P+N (Three-phase four-wire) | 3P+N (Three-phase four-wire) | 4PAG (Full protection for three-phase four-wire) |
| Remote Signalling Function | None | None | Available (Remote status monitoring) | Available (Remote status monitoring) |
| Protector Type | Type II (CEI 61643-11) | Type II (CEI 61643-11) | Type II (CEI 61643-11) | Type II (CEI 61643-11) |
| Protection Technology | MOV (L-PE common-mode) | MOV (L-PE common-mode + L-N differential-mode) | MOV (L-PE common-mode + L-N differential-mode) | MOV (L-PE common-mode + L-N differential-mode) |
| Rated Operating Voltage Ue | 230/400V AC 50/60Hz | 230/400V AC 50/60Hz | 230/400V AC 50/60Hz | 230/400V AC 50/60Hz |
| Maximum Continuous Operating Voltage Uc | 350V (L-PE) | 350V (L-PE/L-N) | 350V (L-PE/L-N) | 350V (L-PE/L-N) |
| Nominal Discharge Current In | 35el (8/20μs) | 35el (8/20μs) | 35el (8/20μs) | 35el (8/20μs) |
| Maximum Discharge Current Imax | 65el (8/20μs) | 65el (8/20μs) | 65el (8/20μs) | 65el (8/20μs) |
| Voltage Protection Level Up | ＜1.5kV (L-PE) | ＜1.5kV (L-PE) | ＜1.5kV (L-PE) | ＜1.5kV (L-PE) |
| ＜2.0kV (L-N) | ＜2.0kV (L-N) | ＜2.0kV (L-N) | ||
| Tiempo de respuesta | ≤25ns | ≤25ns | ≤25ns | ≤25ns |
| Earthing System Compatibility | TN-C | TN-C/TN-S | TN-S/TT | TN-S/TT |
| Método de montaje | DIN Rail (35milímetros) | DIN Rail (35milímetros) | DIN Rail (35milímetros) | DIN Rail (35milímetros) |
| Dimensiones (Alto×Ancho×Profundidad) | 85mm×54mm×64mm | 85mm×86mm×64mm | 85mm×86mm×64mm | 85mm×86mm×64mm |
| Capacidad de cableado | Solid wire 2.5–35mm² | Solid wire 2.5–35mm² | Solid wire 2.5–35mm² | Solid wire 2.5–35mm² |
| Flexible wire 2.5–25mm² | Flexible wire 2.5–25mm² | Flexible wire 2.5–25mm² | Flexible wire 2.5–25mm² | |
| Recommended Cable Specification | L wire 4mm² | L wire 4mm² | L wire 4mm² | L wire 4mm² |
| PE wire 6mm² | N wire 4mm² | N wire 4mm² | N wire 4mm² | |
| PE wire 6mm² | PE wire 6mm² | PE wire 6mm² | ||
| Tightening Torque | 3.5Nm | 3.5Nm | 3.5Nm | 3.5Nm |
| Protection Degree | Front panel IP40 | Front panel IP40 | Front panel IP40 | Front panel IP40 |
| Terminals IP20 | Terminals IP20 | Terminals IP20 | Terminals IP20 | |
| Rango de temperatura de funcionamiento | −25°C to +60°C | −25°C to +60°C | −25°C to +60°C | −25°C to +60°C |
| Período de garantía | 18 meses | 18 meses | 18 meses | 18 meses |
| Core Features | Three-phase three-wire | Three-phase four-wire | Three-phase four-wire | Full protection for three-phase four-wire |
| No remote signalling | No remote signalling | With remote signalling | With remote signalling |
- Selection Differences and Application Scenario Guide
| Selection Dimension | Modelo recomendado | Applicable Scenario | Key Considerations |
| System Type | 3PAG (A9L065300) | Three-phase three-wire (TN-C) sistema | No neutral wire protection required, suitable for old industrial power distribution systems |
| 3P+N (A9L065600/401) | Three-phase four-wire (TN-C/TN-S) sistema | L-N differential-mode protection required, balancing equipment and line safety | |
| 4PAG (A9L065402) | Three-phase four-wire (TN-S/TT) sistema | Full protection for all L1-L2-L3-N-PE circuits required | |
| Monitoring Requirement | No remote signalling (A9L065300/600) | Basic protection scenarios with regular manual inspection | Cost priority, suitable for small commercial buildings |
| With remote signalling (r-type, A9L065401/402) | Critical load and unattended scenarios | Need remote monitoring of SPD status and linkage with alarm systems | |
| Nivel de riesgo | iPRU 65 Serie | High-risk areas (lightning strike areas, industrial zones) | Imax=65kA, withstanding strong surge impact |
| iPRU 40 Serie | Medium-risk areas (commercial districts, edificios de oficinas) | Imax=40kA, regular surge protection | |
| iPRU 20 Serie | Low-risk areas (residential buildings, light-load equipment) | Imax=20kA, economical protection solution |
III. Replacement Models and Compatibility Instructions
- Intra-series Replacement
A9L065300 (3PAG) can be replaced with A9L065401 (3P+N with remote signalling) to adapt to system upgrade to TN-S type.
A9L065600 (3P+N) can be replaced with A9L065402 (4P with remote signalling) to improve protection comprehensiveness.
- Cross-series Replacement
The iPRU 65 Series is functionally compatible with the iPRD 65 Serie (such as A9L65601), and the iPRD Series is more focused on IT system adaptation.
For higher protection level (Imax=80kA), the iPF K 80 Serie (such as A9L15586) puede ser considerado.
- Installation Compatibility
All iPRU Series products are installed on standard 35mm DIN rails, and no cabinet structure modification is required during replacement.
The remote signalling (r-type) models need to reserve a DC 24V power interface for status signal transmission.
- Supplementary Installation and Maintenance Points
- Front-end Protection: All models need to be connected with a 10–16A circuit breaker or fuse in series to prevent short-circuit caused by SPD faults.
- Cable Requirements: The length of connecting cables should be ≤50cm to reduce the impact of line impedance on protection performance.
- Indicación de estado: White window means normal operation; red window means module failure and needs replacement.
- Remote Signalling Function: The r-type models provide normally open/normally closed contacts, which can be connected to PLC or monitoring systems to achieve remote early warning.
The iPRU 65 Series meets the surge protection needs of different three-phase power distribution systems through modular pluggable design and graded protection configuration. During selection, priority should be given to matching the system type (3P/3P+N/4P) and monitoring requirements (with or without remote signalling), and selecting the appropriate discharge current specification according to the risk level to ensure the safe operation of electrical equipment.
