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Dehn Surge Arrester 255V Maximum Voltage Rating 50 kA Maximum Surge Current DIN Rail Mount DSH TT 255 FM
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Dehn |
| Height | 90mm |
| Length | 72mm |
| Model | DSH TT 255 FM |
| Depth | 68mm |
| Packaging | 1 pieces |
| Mount Type | DIN Rail |
| Series | DSH TT |
| Maximum Operating Temperature | 80°C |
| Minimum Operating Temperature | -40°C |
| Suppressor Type | Surge Arrester |
| Maximum Voltage | 255V |
| Standards/Approvals | EN 61643-11 / IEC 61643-11, KEMA, VDE |
| Maximum Surge Current | 50kA |
Key Features
- Optimized for combined lightning current and surge protection for 230/400 V nominal voltage systems.
- Compact design using spark gap technology allowing space-saving mounting on DIN rails.
- Features floating signalling contact for monitoring.
- High discharge capacity of up to 50 kA (10/350 μs) for efficient surge suppression.
- Green/red indicator flag for operating state and fault detection in inspection window.
- High follow current extinguishing capacity of Ifi = 25 kArms enhances safety.
- Wide operating temperature range from -40°C to 80°C ensuring reliable performance.
- Complies with EN 61643-11 and IEC 61643-11 standards, with KEMA and VDE approvals.
Product Description
Dehn DSH TT 255 FM Surge Arrester is a state-of-the-art combined lightning and surge protection device designed for use in TT and TN-S electrical systems operating at a nominal voltage of 230/400 V with 3+1 configuration. It incorporates advanced spark-gap technology that enables a compact and space-efficient design, fitting within a single module or pole, suitable for DIN rail mounting.
This surge arrester effectively protects terminal equipment and enables compact lightning equipotential bonding. It provides a high discharge capacity of up to 50 kA (10/350 μs), ensuring robust defense against lightning strikes and surges. Monitoring is facilitated via a floating signalling contact and a visible green/red indicator flag that shows operating and fault conditions clearly in the inspection window.
The device also boasts a high follow current extinguishing capacity (Ifi = 25 kArms), which enhances the safety and reliability of the electrical system by quickly quenching follow currents. It is engineered to operate reliably within a wide temperature range of -40°C up to 80°C, making it suitable for diverse industrial and commercial environments.
Certified to EN 61643-11 and IEC 61643-11 with additional KEMA and VDE approvals, the DSH TT 255 FM meets rigorous international standards for surge protection devices. Manufactured in Germany, it reflects high quality and durable construction standards.
This product is widely applicable in industrial installations, manufacturing plants, electrical distribution systems, and commercial premises requiring dependable surge protection compliant with international norms.
Optimized combined lightning current and surge protection for TT and TN-S systems. Compact spark-gap technology with DIN rail mounting. Floating signalling contact and fault indicator for easy monitoring. 50 kA discharge capacity (10/350 μs) for effective surge suppression.
High follow current extinguishing capacity of Ifi = 25 kArms. Operating temperature range from -40°C to 80°C. Compliant with EN 61643-11 / IEC 61643-11 standards, KEMA and VDE certified. Manufactured in Germany. For further quality Surge Protection Components, browse the Electronics & Electricals category on EnvMart.
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Frequently Asked Questions
The maximum voltage rating of this surge arrester is 255V.
It can handle a maximum surge current of 50 kA (10/350 μs).
The dimensions are 90mm in height, 72mm in length, and 68mm in depth.
This model is designed for DIN rail mounting.
It operates reliably within a temperature range of -40°C to 80°C.
It complies with EN 61643-11 and IEC 61643-11 standards, and has KEMA and VDE approvals.
Yes, it features a floating signalling contact and a visible green/red indicator flag for monitoring operating and fault conditions.
The follow current extinguishing capacity is Ifi = 25 kArms.
It is widely applicable in industrial installations, manufacturing plants, electrical distribution systems, and commercial premises requiring surge protection.
It incorporates advanced spark-gap technology for effective surge suppression.
It is packaged as 1 piece per unit.
It is manufactured in Germany.
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