Phoenix PLT-SEC-T3 Series: Industrial Surge Protection Modules - Selection Guide
Product Overview
The Phoenix PLT-SEC-T3 Series comprises industrial-grade surge protection modules (SPDs) designed to safeguard AC power circuits from transient voltage surges and lightning-induced disturbances. Focusing on T3 surge class (Type 3 SPD for point-of-use protection), these modules support North American grid voltages (120V AC/230V AC) with two functional variants: P (Standard Protection) and FM (FM Global Certified for hazardous areas). Featuring dual terminal compatibility (UT universal screw/PT plug-in), compact 35mm DIN rail mounting, and robust industrial design, they’re ideal for protecting control cabinets, PLCs, industrial controllers, and sensitive electronics in manufacturing, process automation, and commercial buildings.
Model Quick Reference Table
| Model No. | Product Name | Input Voltage | Variant | Terminal Type | Key Features | Application Scenarios |
|---|---|---|---|---|---|---|
| 2907923 | PLT-SEC-T3-230-P-UT/PT | 230V AC | P (Standard) | UT/PT dual-compatible | T3 class, dual terminal options | General 230V AC surge protection (flexible wiring) |
| 2905235 | PLT-SEC-T3-230-P | 230V AC | P (Standard) | Standard fixed | T3 class, cost-effective | Basic 230V AC surge protection for control cabinets |
| 2907919 | PLT-SEC-T3-230-FM-UT | 230V AC | FM (Hazardous Area) | UT screw | FM certified, secure wiring | Hazardous area (Div 2) 230V AC surge protection |
| 2907928 | PLT-SEC-T3-230-FM-PT | 230V AC | FM (Hazardous Area) | PT plug-in | FM certified, tool-free wiring | Hazardous area 230V AC protection (fast maintenance) |
| 2905229 | PLT-SEC-T3-230-FM | 230V AC | FM (Hazardous Area) | Standard fixed | FM certified, cost-effective | Hazardous area basic 230V AC surge protection |
| 2907922 | PLT-SEC-T3-120-P-UT/PT | 120V AC | P (Standard) | UT/PT dual-compatible | T3 class, dual terminal options | General 120V AC surge protection (flexible wiring) |
| 2905234 | PLT-SEC-T3-120-P | 120V AC | P (Standard) | Standard fixed | T3 class, cost-effective | Basic 120V AC surge protection for PLCs/sensors |
| 2907918 | PLT-SEC-T3-120-FM-UT | 120V AC | FM (Hazardous Area) | UT screw | FM certified, secure wiring | Hazardous area (Div 2) 120V AC surge protection |
| 2907927 | PLT-SEC-T3-120-FM-PT | 120V AC | FM (Hazardous Area) | PT plug-in | FM certified, tool-free wiring | Hazardous area 120V AC protection (fast maintenance) |
| 2905228 | PLT-SEC-T3-120-FM | 120V AC | FM (Hazardous Area) | Standard fixed | FM certified, cost-effective | Hazardous area basic 120V AC surge protection |
Core Technical Specifications (Universal)
| Parameter | Value | Notes |
|---|---|---|
| Input Voltage Range | 120V AC (100~140V); 230V AC (200~277V) | North American grid compatibility (±15% tolerance) |
| Surge Class | T3 (Type 3 SPD) | Point-of-use protection (installed near sensitive equipment) |
| Maximum Continuous Operating Voltage (Uc) | 120V AC: 150V; 230V AC: 277V | Complies with IEC 61643-12 standards |
| Surge Current Capacity (Iimp) | 2.5kA (8/20μs waveform) | Handles typical industrial transient surges |
| Protection Level (Up) | ≤1.5kV (120V AC); ≤2.5kV (230V AC) | Low clamping voltage to protect sensitive electronics |
| Response Time | ≤25ns | Fast surge suppression to minimize equipment damage |
| Terminal Types | UT: Screw (0.14~2.5mm²); PT: Plug-in (0.14~2.5mm²); Dual UT/PT | Flexible wiring for diverse installation needs |
| Operating Temperature | -40℃~85℃ | Wide temperature range for harsh industrial environments |
| Mounting Type | 35mm DIN rail (NS 35/7.5) | Compact design (17.5mm width) for space-saving cabinet layout |
| Protection Class | IP20 (cabinet mounting) | Dust-proof for industrial control cabinets |
| Certifications | CE, UL 1449 (3rd Edition), CSA; FM-suffix: FM Global (Class I/II/III, Div 2) | Global industrial and hazardous area compliance |
| Indicator | Visual status LED (green = normal; red = faulty) | Easy maintenance and fault detection |
Application Scenarios & Recommended Models
1. Hazardous Area 230V AC Surge Protection (Tool-Free Wiring)
- Requirement: FM-certified surge protection for 230V AC circuits in Zone 2 hazardous areas (fast maintenance)
- Recommended Model: 2907928 (PLT-SEC-T3-230-FM-PT)
- Key Reason: FM Global certification; PT plug-in terminal (tool-free installation); T3 class protection for point-of-use deployment
2. General 120V AC Surge Protection (Flexible Wiring)
- Requirement: Dual-terminal (UT/PT) surge protection for 120V AC PLCs and sensors
- Recommended Model: 2907922 (PLT-SEC-T3-120-P-UT/PT)
- Key Reason: UT/PT dual compatibility (adapts to existing wiring); T3 class protection; cost-effective standard variant
3. Hazardous Area 120V AC Protection (Secure Wiring)
- Requirement: FM-certified surge protection for 120V AC circuits in vibration-prone hazardous areas
- Recommended Model: 2907918 (PLT-SEC-T3-120-FM-UT)
- Key Reason: FM certification; UT screw terminal (vibration-resistant); -40℃~85℃ wide temperature range
4. Basic 230V AC Surge Protection (Cost-Effective)
- Requirement: Entry-level T3 class surge protection for 230V AC control cabinets
- Recommended Model: 2905235 (PLT-SEC-T3-230-P)
- Key Reason: Standard P-variant; cost-effective; visual LED indicator for fault monitoring
5. Industrial 230V AC Protection (Hazardous Area, Fixed Terminal)
- Requirement: FM-certified surge protection for 230V AC heavy-duty equipment in hazardous areas
- Recommended Model: 2905229 (PLT-SEC-T3-230-FM)
- Key Reason: FM Global certification; standard fixed terminal (robust for industrial use); 2.5kA surge current capacity
Core Advantages
- T3 Class Protection: Point-of-use surge suppression (Type 3 SPD) for near-equipment installation
- Hazardous Area Compliance: FM-suffix models certified for Class I/II/III, Div 2 environments
- Dual Voltage Support: 120V AC/230V AC compatibility with North American power grids
- Flexible Terminal Options: UT (screw), PT (plug-in), or dual UT/PT for diverse wiring needs
- Wide Temperature Range: -40℃~85℃ operation for harsh industrial conditions
- Fast Response Time: ≤25ns surge suppression minimizes damage to sensitive electronics
- Visual Status Indicator: LED (green/red) enables quick fault detection and maintenance
- Compact Design: 17.5mm width optimizes control cabinet space utilization
- Global Compliance: UL 1449, CE, CSA, and FM certifications for international deployment
Installation & Usage Notes
- Voltage Matching: Select 120V AC/230V AC models based on target circuit voltage (verify Uc rating)
- Hazardous Area Installation: FM-suffix models must comply with Class I/II/III, Div 2 wiring guidelines (proper grounding, approved cables)
- Terminal Selection: Use UT terminals for vibration environments; PT for fast maintenance; dual UT/PT for flexible adaptation
- Mounting Location: Install as close as possible to protected equipment (T3 class = point-of-use protection)
- Grounding: Ensure proper earthing (≤4Ω ground resistance) to maximize surge dissipation effectiveness
- Wiring Specifications: Use 0.14~2.5mm² conductors; tighten UT terminals to 0.5~0.8Nm for secure connections
- Indicator Monitoring: Regularly check LED status (green = normal; red = replace module after surge event)
- Replacement: Replace modules immediately if red LED is active (surge protection capability exhausted)
- Environmental Protection: Install in dry, dust-free control cabinets (IP20 protection); avoid direct moisture or corrosive substances
Phoenix PLT-SEC-T3 Series: Industrial Surge Protection Modules - Selection Guide
Created on：2025-11-26 11:35
