コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
Product Basic Positioning
Schneider A9L16482 is a Type 1+2 combined surge protection device (SPD) belonging to the Acti9 iPRD1 series, with the full model name Acti9 iPRD1 12.5r 3P+N 350V with remote signal transmission. It is used for primary and secondary overvoltage protection in low-voltage distribution systems, and can simultaneously protect against transient overvoltages caused by direct and indirect lightning strikes.
- コア技術パラメータ
| Parameter Category | 詳細仕様 |
| Product Model | A9L16482 (Acti9 iPRD1 12.5r) |
| Protection Class | Type 1+2 (Combination of Class I + Class II) |
| Pole Configuration | 3P+N (Three-phase + Neutral), 4-module width |
| 定格電圧 | 400Vと, Maximum Continuous Operating Voltage (Uc) 350Vと |
| Maximum Discharge Current | Imax=50kA (8/20s waveform), In=20kA (8/20s waveform) |
| Voltage Protection Level | Up=1.5kV, 1.5kV for L-N/L-L/N-PE |
| Protection Technology | MOV+GDT combined technology (Metal Oxide Varistor + Gas Discharge Tube) |
| Earthing System Compatibility | Suitable for TN-S and TT systems, not applicable to TN-C, IT, 直流システム |
| Mounting Method | DIN rail mounting, 寸法: 89mm(H)*72mm(W)*69mm(D) |
| Wiring Capacity | Rigid conductor 10-35mm虏, Flexible conductor 10-25mm虏 |
| 特別な機能 | Built-in overcurrent protection circuit breaker (self-protection), remote signal transmission (fault alarm) |
- Core Product Features
- Integrated Type 1+2 Protection: No need for additional Type 1 SPD configuration; a single device provides two-level protection, simplifying distribution design and installation.
- Self-protection Design: Built-in dedicated circuit breaker avoids line short-circuit risks caused by SPD faults, improving system safety.
- Remote Monitoring Function: Equipped with “replacement required” signal output, which can be connected to Building Automation System (BAS) or distribution monitoring system to realize real-time fault early warning.
- Modular Plug-in Design: Damaged pluggable protection modules can be replaced quickly, allowing maintenance without power outage and reducing system downtime.
- High-performance Protection: MOV+GDT combined technology provides low residual voltage (1.5kV) and high current-carrying capacity (50の) to ensure equipment safety.
- High Reliability: Complies with IEC 61643-11 standard, guaranteed by Schneider original quality, with a warranty period of 18-24 数ヶ月.
- 典型的なアプリケーションシナリオ
- Incoming Cabinet of Residential and Commercial Buildings: Especially recommended for the main incoming distribution cabinet in high-risk areas as the first-level + second-level surge protection for household access.
- Distribution System of Small and Medium-sized Factories: Provides basic surge protection for production lines and precision equipment to prevent key equipment damage caused by lightning strikes.
- Data Centers and Computer Rooms: Serves as surge protection for UPS front-end or rack-mounted distribution cabinets, protecting sensitive electronic equipment such as servers and network devices.
- Medical Facilities: Provides reliable overvoltage protection for medical equipment, meeting the electrical safety requirements of medical sites.
- New Energy Systems: Suitable for grid-connected cabinets of distributed photovoltaic and small wind power systems, protecting core equipment such as inverters.
- Installation and Selection Notes
- Installation Location: It is recommended to install at the incoming end of the distribution system, close to the main switch, to maximize the protection range.
- Cooperative Protection: Although it has a built-in circuit breaker, it is recommended to install a 16-25A miniature circuit breaker at the front end as backup protection to improve selectivity.
- Cable Requirements: The connecting cable should be as short as possible (≤50cm), using copper conductors with a cross-sectional area of not less than 16mm² to reduce line impedance.
- Earthing Requirements: The PE wire connection must be reliable, and the earthing resistance should comply with relevant specifications (≤4Ω) to ensure rapid discharge of surge current.
- Replacement Reminder: When the remote signal alarms or the panel indicator light turns red, the protection module should be replaced in a timely manner to restore the protection function.
- システムの互換性: Only applicable to 400V AC three-phase systems; the maximum continuous operating voltage of 350V ensures stable operation in environments with voltage fluctuations.
- Alternative and Complementary Models
Same-series Alternatives: A9L16282 (iPRD1 25r, Imax=100kA), A9L16382 (iPRD1 6.5r, Imax=25kA)
Version without Remote Signal: A9L16480 (iPRD1 12.5, no remote signal)
Upgraded Models: Acti9 iPRD2 series (higher current-carrying capacity, intelligent monitoring function)
Cross-brand Replacement Comparison Table for Schneider A9L16482 Surge Protection Device
Core parameters of Schneider A9L16482: Type 1+2 combined SPD, 3P+N, Imax=50kA(8/20μs), Iimp=12.5kA(10/350μs), Uc=350V, Up=1.5kV, with remote signal transmission, MOV+GDT protection technology, drawer-type module, 4-module width(72mm). The following are the corresponding replacement models of major mainstream brands and key matching points:
- Core Replacement Model Comparison Table
| Brand | Corresponding Model | Key Matching Parameters | Difference Description |
| シュナイダー (Same Series) | A9L16480 | 3P+N, T1+T2, 50の, 350V | A9L16480 without remote signal |
| A9L16282 | 3P+N, T1+T2, 100の, 350V | A9L16282 with higher current-carrying capacity | |
| A9L16634 | 3P+N, T1+T2, 50の, 350V | A9L16634 belongs to iPRF1 series with consistent functions | |
| ABB | OVR T1-T2 N 50-440s P QS TS | 3P+N, T1+T2, 50の, 350V | “TS” indicates with remote auxiliary contact |
| OVR T1-T2 3N 12.5-350s P QS TS | 3P+N, T1+T2, 50の, 350V | OVR series is compatible with System pro M compact | |
| シーメンス | 5SD7414-3 | 3P+N, T1+T2, 50の, 335V | RSC indicates with remote signal contact |
| 5SD74 T1/T2 12.5/50kA 335V 3P+N RSC | 3P+N, T1+T2, 50の, 335V | 5SD74 series adopts modular design with 4-module width | |
| チント | NU5-Ⅰ+Ⅱ-12.5/50 3P+N/F | 3P+N, T1+T2, 50の, 385V | Uc=385V (slightly higher than 350V) |
| NXU-Ⅰ+Ⅱ-12.5/50 3P+N/Y | 3P+N, T1+T2, 50の, 385V | /F and /Y indicate with remote signal | |
| NXU series of Kunlun series adopts plug-in design | |||
| Delixi | CDYU-I+II-12.5/50 3P+N/Y | 3P+N, T1+T2, 50の, 385V | /Y indicates with remote signal contact |
| DZ47sY-I+II 50kA 3P+N/Y | 3P+N, T1+T2, 50の, 385V | CDYU series is plug-in type, DZ47sY is rail-mounted type | |
| Phoenix Contact | VAL-MS-T1/T2 335/12.5/3+1-FM | 3P+N, T1+T2, 50の, 335V | FM indicates with remote indication contact |
| FLT-SEC-P-T1-2C-350/25-FM | 3P+N, T1+T2, 50の, 350V | VAL-MS series is dedicated for 5-wire systems (L1-L3,N,PE) | |
| Changshu Switch | CHK-I+II-50 3P+N/R | 3P+N, T1+T2, 50の, 385V | /R indicates with remote alarm contact |
| CHK series adopts drawer-type module design | |||
| Nader | NSPD T1+T2-50 3P+N/Y | 3P+N, T1+T2, 50の, 385V | /Y indicates with remote signal |
| Nader NSPD series has passed CQC certification |
- Detailed Description of Replacement Models of Various Brands
2.1 ABB Replacement Solution
Preferred Model: OVR T1-T2 3N 12.5-350s P QS TS
Protection Class: Type 1+2, meeting both Class I (10/350μs) and Class II (8/20μs) tests
Core Parameters: Imax=50kA, Iimp=12.5kA, Uc=350V, Up=1.5kV, fully matching A9L16482
インストール: 4-module width (72mm), DIN rail mounting, plug-in design for convenient maintenance
Remote Function: の “TS” configuration provides fault alarm contacts that can be connected to the building automation system
2.2 Siemens Replacement Solution
Preferred Model: 5SD7414-3 (5SD74 T1/T2 12.5/50kA 335V 3P+N RSC)
Technical Features: MOV+GDT combined protection, consistent with the technology of Schneider A9L16482
寸法: 4-module width (72mm), fully compatible with A9L16482 without modifying the cabinet layout
Remote Signal: The RSC version comes standard with remote signal contacts, which automatically close when a fault occurs and can drive indicator lights or alarm systems
注記: Uc=335V (slightly lower than 350V), suitable for standard 400V systems, not recommended for occasions with large voltage fluctuations
2.3 Chint Replacement Solution
Preferred Model: NU5-Ⅰ+Ⅱ-12.5/50 3P+N/F (NXU-Ⅰ+Ⅱ-12.5/50 3P+N/Y of Kunlun series)
Design Features: Integrated T1+T2 protection, no need for additional primary SPD configuration
Key Parameters: Imax=50kA, Iimp=12.5kA, Up=1.5kV, meeting the protection requirements of A9L16482
Difference: Uc=385V (slightly higher than 350V), with stronger adaptability, suitable for systems with large voltage fluctuations
Remote Function: The suffixes “/F” そして “/Y” indicate with remote fault alarm contacts, contact capacity: AC 250V/5A, DC 30V/1A
2.4 Phoenix Contact Replacement Solution
Preferred Model: VAL-MS-T1/T2 335/12.5/3+1-FM (Order No.: 2800183)
Technical Advantage: Hot-swappable design, modules can be replaced with power on when a fault occurs, reducing system downtime
Core Parameters: Imax=50kA, Iimp=12.5kA, Uc=335V, Up=1.5kV, consistent with A9L16482
Remote Function: The FM version comes standard with remote indication contacts, whose state changes when a fault occurs, contact type: NO/NC optional
Applicable System: 5-wire system (L1-L3, N, PE), with good compatibility with the TN-S/TT system of A9L16482
- Key Replacement Notes
| Item | Technical Points | Recommended Practice |
| Core Parameter Matching | Must ensure: | Prioritize models with Uc=350V |
| Protection Class: Type 1+2 (meeting both Class I + Class II tests) | Up≤1.5kV ensures consistent protection effect | |
| Current-carrying Capacity: Imax≥50kA, Iimp≥12.5kA | ||
| Uc: 350V or 385V (suitable for 400V systems) | ||
| Up: ≤1.5kV (protecting sensitive equipment) | ||
| Installation Dimension Compatibility | A9L16482 has a 4-module width (72mm) for DIN rail mounting | The width of the replacement model must be ≤72mm |
| For drawer-type models, confirm rail compatibility | ||
| Remote Signal Compatibility | Contact type (いいえ/いいえ) and capacity (AC 250V/5A) need to match the original system | Check the design of the remote alarm circuit |
| Install a signal conversion module if necessary | ||
| Protection Technology Matching | A9L16482 adopts MOV+GDT combined technology | Prioritize products with the same technical route |
| Pure MOV type requires additional backup protection | ||
| システムの互換性 | Only applicable to TN-S and TT systems, not applicable to TN-C, IT systems | Confirm the earthing system type before replacement |
| Adjust the SPD wiring method if necessary | ||
| Backup Protection Coordination | A9L16482 has a built-in dedicated circuit breaker | For models without built-in protection, backup protection must be installed at the front end |
| Some brands need additional 16-25A miniature circuit breakers | Ensure protection selectivity |
- Recommended Replacement Solutions
- Same-brand Replacement: Schneider A9L16480 (without remote signal) or A9L16634 (iPRF1 series), fully compatible without adjusting the installation space and control system
- International Brand Upgrade: ABB OVR T1-T2 3N 12.5-350s P QS TS or Siemens 5SD7414-3, with reliable quality and complete remote functions, suitable for important projects
- Cost-effective Domestic Alternative: Chint NU5-Ⅰ+Ⅱ-12.5/50 3P+N/F or Delixi CDYU-I+II-12.5/50 3P+N/Y, priced at about 60%-70% of international brands, with performance meeting requirements
- Technology Upgrade Solution: Phoenix Contact VAL-MS-T1/T2 335/12.5/3+1-FM, with plug-in design for more convenient maintenance and more complete remote monitoring functions, suitable for key scenarios such as data centers
- Quick Selection Suggestions
- General Projects: Choose domestic alternatives (Chint/Delixi) for the highest cost performance and satisfactory performance
- Important Projects: Choose products of the same series from ABB/Siemens/Schneider for higher reliability and complete remote functions
- Maintenance Convenience Priority: Choose plug-in design (such as Phoenix Contact VAL-MS series, ABB OVR series) for quick module replacement in case of faults and reduced downtime
