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Dehn DG M TNS ACI 275 FM Type 2/Class II Surge Arrester Modular ACI, Maximum Voltage 275V, DIN Rail Mount
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Dehn |
| Height | 90mm |
| Length | 72mm |
| Model | DG M TNS ACI 275 FM |
| Depth | 73mm |
| Packaging | 1 pieces |
| Mount Type | DIN Rail |
| Series | DG M TNS ACI |
| Maximum Operating Temperature | 80°C |
| Minimum Operating Temperature | -40°C |
| Suppressor Type | Type 2/Class Ii |
| Maximum Voltage | 275V |
| Standards/Approvals | EN 61643-11 / IEC 61643-11 |
Key Features
- Designed for protecting electrical installations from transient overvoltage.
- Features advanced circuit interruption (ACI) technology for superior protection and safety.
- No external backup fuse required due to integrated ACI switch/spark gap combination.
- DIN rail mounting enables fast and secure installation in distribution panels.
- Rated maximum voltage of 275V AC with TOV withstand up to 440V AC.
- Small connection cross-sections are sufficient for practical wiring (6 mm²).
- Zero leakage current due to galvanic isolation by ACI switch unit.
- Complies with EN 61643-11 and IEC 61643-11 international safety standards.
Product Description
The Dehn DG M TNS ACI 275 FM surge arrester is a fully modular, Type 2/Class II device engineered for protection of power installations against transient surge voltages and overvoltages. Built with industry-leading Advanced Circuit Interruption (ACI) technology, this surge suppressor is specifically optimized for TN-S system operation within commercial, industrial, or critical infrastructure settings.
The ACI technology integrates a switch and spark gap combination within the protection module, eliminating the need for external backup fuses. This facilitates straightforward panel integration and enhances reliability even during high transient events. The modular robust design ensures compatibility with DIN rail mounting, simplifying installation and maintenance in distribution boards and switchgear cabinets.
Rated for a maximum voltage of 275V AC, the DG M TNS ACI 275 FM withstands temporary overvoltages (TOV) up to 440V AC, providing confidence in demanding electrical networks. The internal galvanic isolation via the ACI switch unit results in zero leakage current, supporting high system reliability and no nuisance tripping of 32 A gG fuses.
Installation is made easier and safer with the device’s ability to accept small connection cross-sections - only 6 mm² wires are required. The Dehn surge arrester belongs to the Red/Line product family, ensuring coordinated protection with upstream and downstream arresters for layered network defense.
Conformance to EN 61643-11 and IEC 61643-11 standards guarantees global compliance. The product’s wide temperature range (-40°C to 80°C) enables consistent performance in environments from harsh industrial facilities to temperature-variable commercial installations.
Applications include power distribution networks, machinery protection, critical infrastructure, and commercial facility safety, where reliable surge suppression is essential. The modular construction, maintenance-friendly design, and advanced safety features make the DG M TNS ACI 275 FM an ideal choice for electrical professionals.
Browse more Dehn surge protection products in the EnvMart Electronics & Electricals category for comprehensive power safety solutions.
Explore more products in our Surge Protection Devices category.
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Frequently Asked Questions
The maximum voltage rating of this surge arrester is 275V AC.
It complies with EN 61643-11 and IEC 61643-11 international safety standards.
The operating temperature range is from -40°C to 80°C.
This model is designed for DIN rail mounting, facilitating easy installation in distribution panels.
It is a Type 2/Class II surge arrester, designed to protect against transient surge voltages and overvoltages.
The dimensions are 90mm in height, 72mm in length, and 73mm in depth.
It requires small connection cross-sections, specifically 6 mm² wires for practical wiring.
No, it does not require an external backup fuse due to the integrated ACI switch/spark gap combination.
It is suitable for power distribution networks, machinery protection, critical infrastructure, and commercial facility safety.
The Advanced Circuit Interruption (ACI) technology enhances protection and reliability by integrating a switch and spark gap within the module.
The country of origin for this surge arrester is Germany.
This product is packaged as 1 piece per unit.
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