7mm Slim DIN-Rail TRSS-485 Surge Protector for High-Density Cabinets
Main Features
- IEC/EN Category: D1/C1/C2
- Mode of Protection: Longitudinal, Transverse (Line-Line, Line-Ground)
- Coarse & Fine Protection: Gas Discharge Tube (GDT) + TVS Diode
- Voltage: Multiple options available (5V, 12V, 24V, 150V)
- Frequency Range: 10-20MHz
- Surge Discharge Ratings: In: 5kA, Imax: 10kA
- Series Load Current: 0.3A
- Enclosure: DIN 43880 1TE, DIN Rail Mount
- Terminals: Screw Terminals
- Housing: Modular Design
- Compliance: IEC/EN 61643-21, IEC/EN 61643-22

The TRSS-485 (7mm) is a professional-grade Surge Protection Device specifically engineered for high-density industrial environments where cabinet space is extremely limited. Featuring an ultra-slim 7mm profile, this device provides uncompromising protection for RS485 communication lines, remote signaling, and access control intercom systems against lightning-induced surges. By utilizing a sophisticated serial connection design, this Surge Protection Device ensures high-speed data transmission with minimal signal attenuation, maintaining an exceptionally low insertion loss.
Advanced Signal Path Protection for Industrial Reliability Designed to meet stringent industrial requirements, this Surge Protection Device offers protection for a wide range of signal voltages including 12V, 24V, 48V, and 110V configurations. The unit is capable of handling significant discharge currents, effectively absorbing surge energy and introducing it into the earth through the grounding cable. Fully compliant with international standards IEC 61643-21 and EN 61643-21, this SPD is an essential component for safeguarding measurement and control systems in surge-intensive locations.
Applications
RS485, RS422, and RS232-20mA communication lines in automatic control systems.
Access control intercom systems, security systems, and fire protection alarms requiring dedicated Surge Protection Device support.
High-density integrated wiring environments where 7mm space-saving modular SPD designs are critical.
Remote signaling and measurement circuits for infrastructure monitoring across diverse industrial sectors.
Industrial control panels utilizing 35mm DIN rail mounting for audio, video, and digital signal ports.
| Model | TRSS-485 | |||
| Material/width | Aluminum, PA66/ 7mm, 14mm, 18mm | |||
| Nominal volatge (Un) | 5 V | 12 V | 24 V | 100 |
| Maximum operating voltage (Uc) | 8 V | 15 V | 30 V | 110 |
| Frequency | 30 MHz | |||
| Insertion loss | ≤ 0,5 dB | |||
| Standing wave | 1,2 | |||
| Nominal discharge current (8/20μs) (In) | 5 kA | |||
| Maximum discharge current (8/20μs) (Imax) | 10 kA | |||
| Voltage protection level (Up) | <20 V | < 40 V | < 60 V | <150 V |
| Mounting | DIN rail 35mm | |||
| Degree of protection | IP20 | |||
| Range of operating temperatures (min/max) | -40℃/70℃ | |||
| Humidity range | 5%-95% | |||
| According to standard | EN 61643-21:2012, IEC 61643-21:2011 | |||


Rotate the 3D model to inspect the surge protective device from different angles. For detailed technical specifications, electrical ratings and installation information, please refer to the other tabs.
Related Products
| Uocstc | 1000v, 1250v |
|---|---|
| Ucpv | 1200v, 1500 |
| Iimp | 5kA, 7kA |
| Z0 | 50 Ohm |
|---|---|
| IL | ≤0.3dB |
| Freq. | DC-2.5GHz |
| VSWR | <1.2 |
| Uocstc | 110v, 24v, 48v, 75v |
|---|---|
| Ucpv | 180v, 36v, 65v, 80v |

