DEHN DSA 230 LA Type 2 Surge Protective Device 230V Grey 924370

The DEHN DSA 230 LA is a single-pole Type 2 surge protective device engineered for 230 V AC systems. Unlike multi-pole arresters, it offers a compact, DIN-rail-mounted solution for protecting single-phase circuits against transient overvoltages. With a nominal discharge current of 20 kA and a maximum of 40 kA, it responds in under 25 nanoseconds, limiting residual voltage to less than 1.2 kV. The integrated thermal disconnector and optical status indicator provide clear operational feedback, while the grey thermoplastic housing ensures durability in industrial environments.

Highlights

• Type 2 / Class II surge protection for 230 V AC single-pole applications
• High discharge capacity: I_n 20 kA, I_max 40 kA (8/20 µs)
• Fast response time < 25 ns and low voltage protection level < 1.2 kV
• Integrated thermal disconnector with optical green/red status indication
• Mounts on 35 mm DIN rail (EN 60715), IP20 protection

In daily use

Install the DSA 230 LA in distribution boards to safeguard sensitive equipment from surge damage. Its compact one-module width saves space, and the clear status window allows quick visual checks. Suitable for ambient temperatures from -40 °C to +80 °C, it performs reliably in harsh conditions. Connection cross-sections up to 25 mm² (solid) or 16 mm² (stranded) accommodate standard wiring.

Full specifications

• Nominal voltage: 230 V AC (50/60 Hz)
• Max. continuous operating voltage: 275 V AC
• Nominal discharge current (8/20 µs): 20 kA
• Max. discharge current (8/20 µs): 40 kA
• Voltage protection level: < 1.2 kV
• Response time: < 25 ns
• Number of poles: 1
• Mounting: 35 mm DIN rail (EN 60715)
• Housing material: Thermoplastic, flame-retardant
• Colour: Grey (RAL 7035)
• Operating temperature: -40 °C to +80 °C
• Degree of protection: IP20
• Connection cross-section solid: 1.5 - 25 mm²
• Connection cross-section stranded: 1.5 - 16 mm²
• Status indication: Optical (green/red)
• Thermal disconnector: Integrated

Final note

The DEHN DSA 230 LA combines proven surge protection technology with straightforward installation, making it a reliable choice for protecting single-phase circuits.