Phoenix Contact TTC-6P Series: Surge Protection Modules - Selection Guide
Product Overview
The TTC-6P Series are compact surge protection modules designed for industrial measurement and control systems. Featuring a narrow 6mm width, they provide diverse signal protection solutions for power and signal lines of automation equipment, PLC systems, sensors, and actuators. These modules safeguard against voltage surges and transient interference, ensuring stable operation of industrial control systems.
Model Quick Reference Table (By Interface Type)
1. Single 2-Wire Interface (1X2 Series)
| Model No. |
Voltage Rating |
Protection Type |
Connection Type |
Max Current |
Application Scenarios |
| 2906809 |
24DC |
UT |
Standard |
600mA |
General sensor/actuator protection |
| 2906815 |
24DC |
PT |
Standard |
600mA |
Signal line overvoltage protection |
| 2908192 |
12DC |
UT |
Standard |
600mA |
Low-voltage equipment protection |
| 2908195 |
48DC |
PT |
Standard |
600mA |
Industrial communication module protection |
| 2907840 |
24DC |
I-P |
Standard |
600mA |
With integrated status indication |
| 2906738 |
24DC |
UT |
M-Type |
600mA |
Male connector for sensors |
| 2906750 |
24DC |
PT |
M-Type |
600mA |
Male connector for actuators |
| 2906781 |
24DC |
UT |
F-M Type |
600mA |
Female+Male hybrid connection |
| 1065318 |
24DC |
PT |
F-Type |
600mA |
Female connector for controllers |
| 1065312 |
24DC |
UT |
EX-Type |
600mA |
Explosion-proof environment applications |
2. 2-Wire High-Current Interface (2-HC Series)
| Model No. |
Voltage Rating |
Protection Type |
Connection Type |
Max Current |
Application Scenarios |
| 2906811 |
24DC |
UT |
Standard |
6A |
High-load protection (solenoid valves, contactors) |
| 2906817 |
24DC |
PT |
Standard |
6A |
High-power signal circuit protection |
| 2906743 |
24DC |
UT |
M-Type |
6A |
Male connector for high-current equipment |
| 2906755 |
24DC |
PT |
M-Type |
6A |
Male connector for high-power actuators |
3. Dual 2-Wire Interface (2X2 Series)
| Model No. |
Voltage Rating |
Protection Type |
Connection Type |
Max Current |
Application Scenarios |
| 1334595 |
24DC |
PT |
Standard |
600mA×2 |
Dual signal channel protection |
Core Technical Specifications (Universal)
| Parameter |
Value |
Notes |
| Module Width |
6.2mm |
Saves control cabinet space |
| Rated Voltage |
12/24/48DC, 230AC (model-dependent) |
Matches model specifications |
| Maximum Continuous Operating Voltage |
30V DC / 21V AC |
Ensures long-term stable operation |
| Response Time |
≤1ns (line-line), ≤100ns (line-ground) |
Fast protection against surge damage |
| Nominal Discharge Current |
5kA (line-ground), 0.5-5kA (line-line) |
Surge absorption capacity |
| Protection Class |
IP20 |
Dust-proof, suitable for cabinet mounting |
| Operating Temperature |
-40°C~85°C |
Adapts to harsh industrial environments |
| Mounting Type |
35mm DIN rail (NS 35/7.5) |
Standard industrial installation |
| Connection Type |
Push-in (some models) / Screw terminals |
Tool-free wiring (some models) |
| Conductor Range |
Flexible: 0.2-2.5mm²; Rigid: 0.2-4mm² |
AWG 24-12 |
Application Scenarios & Recommended Models
1. General Sensor/Actuator Protection
- Requirement: Protect 24V DC standard sensors, proximity switches, and small relays
- Recommended Model: 2906809 (TTC-6P-1X2-24DC-UT-I)
- Key Reason: UT type provides dual overvoltage+overcurrent protection; compact design fits dense cabinet layouts
2. High-Current Equipment Protection
- Requirement: Safeguard 24V DC high-power devices (solenoid valves, contactors)
- Recommended Model: 2906811 (TTC-6P-2-HC-24DC-UT-I)
- Key Reason: 6A high-current tolerance; UT protection covers both surge and overcurrent risks
3. Explosion-Proof Environment Applications
- Requirement: Surge protection for devices in hazardous areas
- Recommended Model: 1065312 (TTC-6P-1X2-EX-24DC-UT-I)
- Key Reason: EX-type explosion-proof certification; suitable for Zone 1/2 hazardous locations
4. Low/High-Voltage Device Protection
- Requirement: Protect 12V DC low-voltage sensors or 48V DC communication modules
- Recommended Models: 2908192 (12DC/UT), 2908195 (48DC/PT)
- Key Reason: Voltage-matched design; targeted protection for different voltage-grade equipment
5. Dual Signal Channel Protection
- Requirement: Protect two independent 24V DC signal lines simultaneously
- Recommended Model: 1334595 (TTC-6P-2X2-24-PT-I)
- Key Reason: Dual 2-wire configuration; saves space compared to two single-channel modules
Core Advantages
- Compact Design: 6.2mm narrow width maximizes dense control cabinet utilization
- Dual Protection Options: UT (overvoltage+overcurrent) and PT (overvoltage) fit diverse needs
- Wide Voltage Compatibility: Covers 12V/24V/48V DC, adapting to most industrial equipment
- Fast Response: ≤1ns line-line response time blocks surges before equipment damage
- Flexible Connections: Male/female/EX/HC variants match different installation scenarios
- Industrial-Grade Durability: -40°C~85°C operating temperature resists harsh environments
- Easy Installation: DIN rail mounting and push-in/screw terminals simplify deployment
Installation & Usage Notes
- Voltage Matching: Select models with voltage ratings matching the protected circuit (e.g., 24DC for 24V DC sensors)
- Connection Type Selection: Choose male/female connectors based on device interface (M for sensors, F for controllers)
- Wiring Specifications: Use 0.2-4mm² conductors; keep connection lines ≤0.5m to maintain protection performance
- Mounting Position: Install as close to the protected device as possible for optimal surge suppression
- Explosion-Proof Installation: EX-type models must comply with ATEX/IECEx guidelines; use approved cables
- Maintenance Checks: Regularly inspect module status (if equipped); replace damaged modules promptly
- Polarity Attention: DC models require correct polarity; reverse polarity may damage the module
