Dehn 952110

Dehn 952110 – Advanced Surge Protection for Single‑Phase TN/TT Systems

The Dehn 952110 is a high‑performance surge arrester designed to safeguard electrical installations against transient overvoltages. It belongs to the Type 2 family, which offers superior protection for single‑phase TN and TT networks. This device is engineered to handle peak currents up to 40 kA while maintaining low impedance during normal operation.

Key Technical Specifications

• Model: Dehn 952110 (DEHNguard M)
• Type: Surge arrester, Type 2 (C‑type)
• Connection: Two‑pole (2P) configuration suitable for 1 + NPE systems
• Voltage Rating: 275 V AC – compatible with standard single‑phase supply levels
• Maximum Surge Current: 40 kA – ensuring robust defense against lightning strikes and switching surges
• Impedance (Normal Operation): < 1.5 Ω – minimal impact on circuit performance
• Protection Class: IP20 – suitable for indoor installations with no protection against dust or water ingress
• Physical Dimensions: 2 TE (two terminal ends) – compact form factor that fits standard DIN‑rail enclosures
• Color Coding: Red – facilitates quick identification and compliance with visual marking standards

Design Features & Construction

The Dehn 952110 incorporates a robust ceramic core that provides excellent dielectric strength. Its internal structure is engineered to dissipate energy efficiently, reducing the risk of damage to downstream equipment. The device’s mounting system is compatible with DIN‑rail panels, allowing for straightforward installation in distribution boards and switchgear.

Application Areas

• Residential and commercial single‑phase power supplies
• Industrial control panels where TN or TT protection is required
• Data centers, telecommunications cabinets, and other critical infrastructure that demands reliable surge suppression
• Utility distribution boards for low‑voltage networks

Installation Guidelines

1. Verify Compatibility: Ensure the supply voltage matches the 275 V rating and that the network is single‑phase TN or TT.
2. Mounting: Secure the device onto a DIN‑rail panel using the provided mounting brackets. Align the terminals with the corresponding busbars.
3. Connection: Connect the two poles to the line and neutral conductors, observing correct polarity if applicable.
4. Inspection: After installation, inspect for proper seating of the device on the rail and confirm that no loose connections exist.

Maintenance & Testing

Periodic inspection is recommended to ensure the arrester remains free from physical damage or corrosion. Functional testing can be performed using a surge tester to verify that the device responds within specified parameters. Replace any unit that fails to meet performance criteria.

Compliance & Standards

• Designed in accordance with IEC 61643‑1 for Type 2 surge arresters.
• Meets German DIN standards for electrical safety and reliability.
• IP20 rating complies with IEC 60529, indicating protection against solid objects larger than 12 mm but no water ingress.

Why Choose Dehn 952110?

The combination of high surge current capability, low normal‑operation impedance, and compact DIN‑rail design makes the Dehn 952110 an ideal choice for safeguarding sensitive electrical installations. Its red coloration aids in quick visual identification during maintenance or troubleshooting, ensuring that protection is always visible and accessible.

Conclusion

The Dehn 952110 surge arrester delivers reliable, high‑level protection for single‑phase TN/TT networks. With its robust construction, stringent compliance with international standards, and user‑friendly installation features, it stands out as a premier solution for protecting critical electrical infrastructure from transient overvoltages.