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Schneider ACTI-9 IPRF1-12.5R-3P+N-A9L16634 Surge Protective Device (SPD)
- Model Code Definition
Full Model Breakdown: ACTI-9-IPRF1-12.5R-3P+N-A9L16634
| Code Segment | Definition | Detailed Description |
| ACTI-9 | Product Series | Code for Schneider Electric ACTI-9 modular low-voltage distribution series |
| IPRF1 | Product Type | Plug-in Type T1+T2 combined SPD with voltage-limiting structure |
| 12.5R | Core Parameter | 12.5: Maximum impulse current Imax=12.5kA; R: Equipped with remote indication contact |
| 3P+N | Pole Configuration | 3-phase + neutral pole protection, applicable to 230/400V three-phase four-wire power system |
| A9L16634 | Order Code | Unique official Schneider part number for procurement and inventory management |
Full Product Description: Acti9 iPRF1 12.5r 3P+N 350V Plug-in T1+T2 Surge Protector with Remote Indication
iPRF1: Pluggable design for easy maintenance & replacement without power cut-off
T1+T2: Comply with both Class I (10/350μs) and Class II (8/20μs) surge protection criteria
350V: Maximum continuous operating voltage Uc, matched for standard 230/400V AC power grid
Remote indication: Fault dry contact output for BMS/monitoring system integration
- Core Technical Specifications
Basic Electrical Parameters
| Item | Value | Unit | Remarks |
| Product Type | T1+T2 combined SPD | – | Voltage-limiting design against direct & induced lightning surge |
| Pole | 3P+N | – | Full protection for three-phase four-wire including neutral line |
| Max Continuous Operating Voltage (Uc) | 350 | V AC | Suitable for 50/60Hz 230/400V low voltage grid |
| Rated System Voltage (Un) | 230/400 | V AC | Standard LV distribution nominal voltage |
| Max Impulse Current Imax (10/350μs) | 12.5 | kA | Class I rating for direct lightning diversion |
| Nominal Discharge Current In (8/20μs) | 50 | kA | Class II rating for induced overvoltage suppression |
| Voltage Protection Level (Up) | ≤1.5 | kV | Clamp surge voltage to safeguard equipment insulation |
| Response Time | ≤25 | ns | Fast response to discharge transient surge energy |
| Short-circuit withstand capacity | 10 | kA | Coordinate with upstream backup protection device |
Mechanical & Environmental Parameters
| Item | Value | Unit | Remarks |
| Mounting | DIN rail mounting | – | Standard 35mm DIN rail complying with EN 50022 |
| Overall Width | 72 | mm | Occupies 4 modular pitches (18mm per module) |
| Housing Material | Thermoplastic | – | UL94 V0 flame retardant per IEC 60695-11-10 |
| Ingress Protection | IP20 | – | Finger-touch safe, for indoor cabinet installation only |
| Operating Temperature | -40 ~ +80 | °C | Wide ambient temperature for harsh working condition |
| Remote Signal | Dry contact (NO/NC) | – | Contact status change upon SPD failure for remote monitoring |
| Termination | Screw terminals | – | Accept 1.5~35mm² copper conductor for reliable wiring |
III. Full IPRF1 Series Model List
| Model | Pole | Max Impulse Current | Remote Indication | Order Code | Applicable System |
| iPRF1 12.5r 1P+N | 1P+N | 12.5kA | Yes | A9L16632 | Single-phase 230V system |
| iPRF1 12.5r 3P | 3P | 12.5kA | Yes | A9L16633 | Three-phase three-wire system |
| iPRF1 12.5r 3P+N | 3P+N | 12.5kA | Yes | A9L16634 | Three-phase four-wire 230/400V system |
| iPRF1 12.5 1P+N | 1P+N | 12.5kA | No | A9L612501 | Single-phase without remote monitoring |
| iPRF1 12.5 3P+N | 3P+N | 12.5kA | No | A9L612601 | Three-phase four-wire without remote monitoring |
- Cross & Legacy Replacement Options
- Same Series Alternatives
| Original Model | Replacement Model | Difference Description | Application Adjustment |
| iPRF1 12.5r 3P+N(A9L16634) | iPRF1 12.5 3P+N(A9L612601) | Remote indication removed | Small distribution without remote monitoring |
| iPRF1 12.5r 3P+N(A9L16634) | iPRD1 12.5r 3P+N(A9L16482) | Upgraded to iPRD1 series with enhanced reliability | Commercial buildings requiring superior surge protection |
| iPRF1 12.5r 3P+N(A9L16634) | iPRF1 Master 35r 3P+N | Imax upgraded to 35kA | Lightning-prone zones & critical industrial facilities |
- Cross-Brand Equivalents
| Schneider Part | ABB Equivalent | Siemens Equivalent | Phoenix Contact Equivalent |
| iPRF1 12.5r 3P+N(A9L16634) | OVR T1+2 3N-40-350 | 5SD7440-8 | VAL-MS 350/3+1-FM |
| Protection Class | T1+T2 | T1+T2 | T1+T2 |
| Max Impulse Current | 12.5kA | 12.5kA | 12.5kA |
| Up | ≤1.5kV | ≤1.5kV | ≤1.5kV |
| Remote Contact | Yes | Yes | Yes |
- Recommended Upgrade Models
| Old Model | Upgrade Model | Upgrade Advantages | Application Scope |
| iPRF1 12.5r 3P+N(A9L16634) | iPRD1 25r 3P+N(A9L16483) | Imax raised to 25kA for Class I/II building protection | Large commercial complex & manufacturing plant |
| iPRF1 12.5r 3P+N(A9L16634) | iPRF1 Master 35r 3P+N | Imax=35kA with superior surge withstand | Lightning intensive area, data center, hospital & key infrastructures |
- Application Environment & Project Cases
Recommended Applications ✅
Commercial Buildings: Grade III/IV construction such as office towers, shopping malls, hotels against indirect lightning & switching overvoltage
Industrial Plants: Medium/small factory production line control cabinet, protection for PLC, inverter and precision automation equipment
Public Facilities: Schools, hospitals, libraries to secure stable power supply for public equipment
Small & Medium Data Room: Protect server & network devices from mains transient surge
Residential Premises: High-rise & villa community to safeguard home appliances & smart home control system
Non-Recommended Applications ❌
Grade I/II key construction (airport, railway hub, large-scale IDC): Requires iPRD1 series with ≥25kA Imax
Open-air exposed installation: IP20 not suitable for outdoor use without extra waterproof enclosure
Grid voltage exceeding 350V AC: Over Uc rating leads to premature SPD breakdown
Installation without qualified earthing: Required earth resistance ≤10Ω for effective surge dissipation
Practical Application Cases
- Grade A Office Building: iPRF1 12.5r 3P+N(A9L16634) fitted in floor distribution panels for main power protection. Post-installation before thunderstorm season, IT equipment failure rate dropped by 85%, eliminating office shutdown & data loss caused by lightning strike. Remote contact links with building automation system for instant fault alert and 60% maintenance efficiency improvement.
- Auto Component Factory: SPD installed for robot & PLC control power supply. Original frequent unexpected production shutdown from grid fluctuation incurred monthly loss around CNY50,000; after SPD commissioning, downtime reduced by 90% with annual cost saving approx. CNY500,000. ≤25ns quick response prevents servo drive damage from voltage spike and improves machining precision.
- High-End Smart Residential Compound: SPD equipped at main distribution room and household panel to protect smart lighting, security & home control devices. Remote signal connects property monitoring platform for 24/7 real-time status check, timely faulty module replacement, improving community power safety & resident satisfaction.
- Common Faults & Troubleshooting
| Fault Symptom | Root Cause | Remedial Action | Preventive Measures |
| Remote alarm triggered | SPD module burnout or internal thermal disconnection | 1. Replace plug-in module after power off | Annual pre-thunderstorm routine inspection; replace SPD after 5 effective surge operations |
| 2. Inspect upstream breaker tripping status | |||
| 3. Test earth continuity | |||
| Module fails to clip onto DIN rail | Improper DIN rail or broken module latch | 1. Verify DIN rail compliance | Handle module gently during installation, avoid brute force |
| 2. Confirm correct insertion direction | |||
| 3. Replace damaged SPD unit | |||
| Terminal overheating | Undersized wire or loose screw | 1. Replace cable within 1.5~35mm² range | Periodic thermal check on high-current wiring terminals |
| 2. Retighten screw with 2.5Nm torque | |||
| Plug-in module stuck | Lock unreleased or over-clamped | 1. Press top release latch | Do not over-press module during mounting |
| 2. Wiggle slightly for extraction | |||
| Upstream MCCB trips | Excessive surge current or short-circuited SPD | 1. Check SPD integrity | Select matched backup fuse/circuit breaker; regular earthing resistance test |
| 2. Verify matching rating of upstream protection | |||
| 3. Confirm earth resistance ≤10Ω |
VII. Selection Guidelines & Quick Reference Rules
Quick Selection Mnemonic
12.5kA T1+T2 grade, 3P+N for three-phase grid,
350V rated with remote monitoring ready,
Plug-in structure easy to service, IP20 for indoor cabinet,
Ideal for commercial & factory, Grade III/IV lightning safeguard.
Quick Rules
- IPRF1 coding: suffix 12.5r =12.5kA + remote contact; plain 12.5 = no remote indication
- Pole selection: 1P+N for single phase, 3P for 3P3W, 3P+N for standard 3P4W 400V grid
- Order code mapping: A9L16632(1P+N) / A9L16633(3P) / A9L16634(3P+N)
- Grade matching: iPRF1 12.5r for III/IV buildings; iPRD1 25r for I/II critical constructions
- Installation requirement: Must be paired with upstream backup protection, earthing resistance ≤10Ω
