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شنايدر إلكتريك 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.
Core Technical Parameters
| Parameter Item | قيمة | Remarks |
| Model | 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 (Metal Oxide Varistor) | Common-mode protection (L-PE) |
| Rated Operating Voltage Ue | 230/400فولت تيار متردد 50/60 هرتز | Suitable for three-phase three-wire systems |
| Maximum Continuous Operating Voltage Uc | 350الخامس (L-PE) | Common-mode protection voltage level |
| Nominal Discharge Current In | 35ال (8/20μs) | Surge current withstanding capacity |
| Maximum Discharge Current Imax | 65ال (8/20μs) | Peak surge current shunting capacity |
| Voltage Protection Level Up | ＜1.5kV (L-PE) | Limits overvoltage to a safe range |
| Response Time | ≤25ns | Rapid suppression of transient overvoltage |
| عدد القطب | 3ص | Three-phase three-wire system (no neutral wire protection) |
| Earthing System | TN-C | Suitable for three-phase three-wire earthing system |
| طريقة التركيب | DIN Rail (35مم) | Standard distribution cabinet installation |
| أبعاد (H×W×D) | 85mm×54mm×64mm | Compact design, saves cabinet space |
| سعة الأسلاك | 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 |
| تشديد عزم الدوران | 3.5نانومتر | Terminal connection specification, prevents loosening |
| درجة الحماية | Front panel IP40, Terminals IP20 | Dustproof and moistureproof, safe protection |
| درجة حرارة التشغيل | −25°C to +60°C | Adapts to temperature fluctuations in industrial environments |
| Warranty Period | 18 شهور | Product quality and performance guarantee |
الميزات الوظيفية
- Pluggable Design: Modular structure supports online hot-swapping of protection modules without power outage, improving maintenance efficiency and power supply continuity.
- إشارة الحالة: 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.
Installation and Maintenance Points
- Installation Specifications
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.
- Maintenance Recommendations
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
السيناريوهات القابلة للتطبيق: 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 (3ف + ن), 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 Series (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 Series
| Parameter Item | 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 |
| Pole Configuration | 3ص (Three-phase three-wire) | 3ف + ن (Three-phase four-wire) | 3ف + ن (Three-phase four-wire) | 4ص (Full protection for three-phase four-wire) |
| Remote Signalling Function | None | None | Available (Remote status monitoring) | Available (Remote status monitoring) |
| Protector Type | Type II (اللجنة الانتخابية المستقلة 61643-11) | Type II (اللجنة الانتخابية المستقلة 61643-11) | Type II (اللجنة الانتخابية المستقلة 61643-11) | Type II (اللجنة الانتخابية المستقلة 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 | 230/400فولت تيار متردد 50/60 هرتز | 230/400فولت تيار متردد 50/60 هرتز | 230/400فولت تيار متردد 50/60 هرتز | 230/400فولت تيار متردد 50/60 هرتز |
| Maximum Continuous Operating Voltage Uc | 350الخامس (L-PE) | 350الخامس (L-PE/L-N) | 350الخامس (L-PE/L-N) | 350الخامس (L-PE/L-N) |
| Nominal Discharge Current In | 35ال (8/20μs) | 35ال (8/20μs) | 35ال (8/20μs) | 35ال (8/20μs) |
| Maximum Discharge Current Imax | 65ال (8/20μs) | 65ال (8/20μs) | 65ال (8/20μs) | 65ال (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) | ||
| Response Time | ≤25ns | ≤25ns | ≤25ns | ≤25ns |
| Earthing System Compatibility | TN-C | TN-C/TN-S | TN-S/TT | TN-S/TT |
| طريقة التركيب | DIN Rail (35مم) | DIN Rail (35مم) | DIN Rail (35مم) | DIN Rail (35مم) |
| أبعاد (H×W×D) | 85mm×54mm×64mm | 85mm×86mm×64mm | 85mm×86mm×64mm | 85mm×86mm×64mm |
| سعة الأسلاك | 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 | ||
| تشديد عزم الدوران | 3.5نانومتر | 3.5نانومتر | 3.5نانومتر | 3.5نانومتر |
| درجة الحماية | Front panel IP40 | Front panel IP40 | Front panel IP40 | Front panel IP40 |
| Terminals IP20 | Terminals IP20 | Terminals IP20 | Terminals IP20 | |
| Operating Temperature Range | −25°C to +60°C | −25°C to +60°C | −25°C to +60°C | −25°C to +60°C |
| Warranty Period | 18 شهور | 18 شهور | 18 شهور | 18 شهور |
| 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 | Recommended Model | Applicable Scenario | Key Considerations |
| System Type | 3ص (A9L065300) | Three-phase three-wire (TN-C) system | No neutral wire protection required, suitable for old industrial power distribution systems |
| 3ف + ن (A9L065600/401) | Three-phase four-wire (TN-C/TN-S) system | L-N differential-mode protection required, balancing equipment and line safety | |
| 4ص (A9L065402) | Three-phase four-wire (TN-S/TT) system | 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 | |
| مستوى المخاطر | iPRU 65 Series | High-risk areas (lightning strike areas, industrial zones) | Imax=65kA, withstanding strong surge impact |
| iPRU 40 Series | Medium-risk areas (commercial districts, office buildings) | Imax=40kA, regular surge protection | |
| iPRU 20 Series | Low-risk areas (residential buildings, light-load equipment) | Imax=20kA, economical protection solution |
ثالثا. Replacement Models and Compatibility Instructions
- Intra-series Replacement
A9L065300 (3ص) can be replaced with A9L065401 (3P+N with remote signalling) to adapt to system upgrade to TN-S type.
A9L065600 (3ف + ن) 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 Series (such as A9L65601), and the iPRD Series is more focused on IT system adaptation.
For higher protection level (Imax=80kA), the iPF K 80 Series (such as A9L15586) can be considered.
- 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.
- إشارة الحالة: 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.
