Phoenix TTC-6P Series: Industrial Surge Protection Devices - Selection Guide
Overview
Phoenix TTC-6P series are modular surge protection devices designed for industrial automation systems, providing reliable protection for measurement and control signals. With 6-pin connection design, they safeguard against voltage surges while maintaining signal integrity. These devices feature compact dimensions (6.2mm width), DIN rail mounting, and are available in various configurations for different voltage levels and hazardous environments.
Model & Core Parameter Table
| Model No. | Product Name | Output Voltage | Status Indicator | Special Features | Application |
|---|---|---|---|---|---|
| 2906825 | TTC-6P-2X1-M-EX-24DC-UT-I | 24V DC | No (UT) | Intrinsically Safe (EX) | Hazardous areas |
| 2906741 | TTC-6P-2X1-M-24DC-UT-I | 24V DC | No (UT) | Standard | General industrial |
| 2906753 | TTC-6P-2X1-M-24DC-PT-I | 24V DC | Yes (PT) | With disconnect knife | Digital I/O protection |
| 2906794 | TTC-6P-2X1-F-M-24DC-PT-I | 24V DC | Yes (PT) | Female connector | Signal transmission |
| 2908209 | TTC-6P-2X1-F-48DC-PT-I | 48V DC | Yes (PT) | Female connector | High-voltage signals |
| 1065320 | TTC-6P-2X1-F-24DC-PT-I | 24V DC | Yes (PT) | Female connector | General industrial |
| 2907832 | TTC-6P-2X1-EX-24DC-I-P | 24V DC | Yes | Intrinsically Safe | Hazardous areas |
| 2908203 | TTC-6P-2X1-48DC-UT-I | 48V DC | No (UT) | High-voltage | Industrial automation |
| 2908204 | TTC-6P-2X1-48DC-PT-I | 48V DC | Yes (PT) | High-voltage | Industrial automation |
| 2906810 | TTC-6P-2X1-24DC-UT-I | 24V DC | No (UT) | Standard | General industrial |
| 2906816 | TTC-6P-2X1-24DC-PT-I | 24V DC | Yes (PT) | Standard | Digital I/O protection |
| 2907843 | TTC-6P-2X1-24DC-I-P | 24V DC | Yes | Plug-only | Replacement parts |
| 2908202 | TTC-6P-2X1-12DC-PT-I | 12V DC | Yes (PT) | Low-voltage | Sensor protection |
Simplified Model Code Interpretation
- TTC-6P: 6-pin surge protection device (TERMITRAB complete series)
- 2X1: Protection for 2 signal wires with common reference potential
- M/F: Male/Female connector type (M=pin, F=socket)
- EX: Intrinsically safe for hazardous areas (EX zones)
- 24DC/48DC/12DC: Rated voltage (24V/48V/12V DC)
- UT/PT: Status indicator (UT=without, PT=with)
- I-P: Plug-only version (without base)
Core Specifications (Unified for Series)
| Spec Item | Details |
|---|---|
| Protection Function | Line-Line & Line-Signal Ground/Shield protection |
| Max. Continuous Voltage | 30V DC (for 24V models), 50V DC (for 48V models) |
| Nominal Discharge Current | 5kA (8/20μs) |
| Voltage Protection Level | ≤140V (C1 rating) |
| Response Time | <1ns |
| Mounting | 35mm DIN rail (width: 6.2mm) |
| Dimensions | H105.8mm × W6.2mm × D100mm |
| Housing | Flame-retardant PBT (UL94 V-0) |
| Protection Class | IP20 (against solid objects ≥12mm) |
| Certifications | CE, UL, CSA, IECEx, ATEX (EX models) |
| Safety Level | Up to SIL 3 (safety-related applications) |
Intuitive Selection Table (At-a-Glance)
| Application Scenario | Recommended Model Features | Key Models | Why This Choice |
|---|---|---|---|
| Hazardous Areas (EX zones) | EX + UT/PT | 2906825 (24V), 2907832 (24V) | Intrinsic safety certification, prevents ignition in explosive atmospheres |
| Digital I/O Protection | 24V + PT | 2906753, 2906816 | Status indication and disconnect knife for troubleshooting |
| High-Voltage Signals | 48V + PT/UT | 2908203, 2908204 | 48V compatibility for industrial automation systems |
| General Industrial Use | 24V + UT/PT | 2906741, 2906810 | Cost-effective protection for standard applications |
| Sensor Protection | 12V + PT | 2908202 | Low-voltage compatibility for sensitive sensors |
| Replacement Parts | I-P version | 2907843 | Only need the plug part for maintenance |
Key Advantages
- Space-Saving Design: Ultra-narrow 6.2mm width saves cabinet space
- Modular Construction: Separate plug and base elements simplify maintenance
- Comprehensive Protection: Guards against surges while maintaining signal integrity
- Hazardous Area Compliance: EX models meet ATEX/IECEx standards for explosive environments
- Status Monitoring: PT models provide visual indication of protection status
- Wide Voltage Range: Available for 12V/24V/48V DC systems, matching most industrial applications
Important Notes for Selection
- Voltage Compatibility: Always match the device voltage with your system voltage
- Environment Consideration: Use EX models in hazardous areas (classified as Zone 0/1/2)
- Status Indication: Choose PT versions for applications requiring fault monitoring
- Connector Type: Select M (male) for plug-to-device connections, F (female) for cable-to-device
Application Examples
Example 1: Hazardous Area Digital Output Protection
System Requirement: Protect 24V DC digital output signals in an explosive environmentRecommended Solution: 2906825 (TTC-6P-2X1-M-EX-24DC-UT-I)Why: EX certification ensures safe operation in hazardous areas, 2X1 protection for 2 signal wires
Example 2: General Industrial Digital I/O Monitoring
System Requirement: Protect and monitor 24V DC digital I/O in a control cabinetRecommended Solution: 2906816 (TTC-6P-2X1-24DC-PT-I)Why: PT version provides visual status indication for easy troubleshooting
Example 3: High-Voltage Industrial Automation
System Requirement: Protect 48V DC control signals in a factory automation systemRecommended Solution: 2908204 (TTC-6P-2X1-48DC-PT-I)Why: 48V compatibility for industrial automation, PT for status monitoring
Summary
Phoenix TTC-6P series surge protection devices offer reliable, space-efficient protection for industrial measurement and control signals. By understanding the model code structure and matching to your application requirements (voltage, environment, monitoring needs), you can select the optimal device for your system.
Phoenix TTC-6P Series: Industrial Surge Protection Devices - Selection Guide
