Dold 3 Phase Monitoring Relay DPDT DIN Rail Mount 230V/400V AC 0.55-1.05UN IL9079.12/002 3AC230/400V 0.55-1.05UN 0.2-2S

The Dold IL9079.12/002 3AC230/400V 0.55-1.05UN 0.2-2S Monitoring Relay is an advanced undervoltage relay designed to detect short voltage interruptions and phase loss in three-phase electrical systems. Featuring a double-pole double-throw (DPDT) contact configuration and a DIN rail mounting system, this relay offers robust performance in industrial and automation electrical distribution applications.

Engineered for precision, the relay detects short interruptions as brief as 20 milliseconds, preventing undefined electrical states that could damage sensitive equipment. Users can adjust the fallback voltage setting between 0.55 and 1.05 times the nominal voltage and configure reactivation delays or blocking for customized operational control. The device also supports single-phase wiring and allows manual reset through an external circuit, increasing versatility in various setups.

Its compact design, with a 35 mm width and dimensions of 59 mm length and 90 mm height, allows space-efficient installations. The screw terminal type ensures secure and straightforward wiring. The green LED indicator provides a clear visual status of the relay's closed contact condition, enhancing operational monitoring.

Certified to IEC 255 and VDE 0435 Section 303 standards and compliant with CE and RoHS directives, this monitoring relay guarantees quality and safety. It operates reliably within a wide temperature range from -60°C to +60°C and is rated for switching voltages up to 250 V AC with a power consumption of 8 VA. Its IP20 and IP40 rated enclosure provides protection suitable for industrial environments.

Manufactured in Germany, the IL9079 series embodies durability and precision for critical electrical monitoring tasks in industrial, automation, and distribution system applications where voltage stability is essential.

Detects undervoltage and short interruptions in three-phase systems. Adjustable fallback voltage from 0.55 to 1.05 times nominal voltage. Configurable reactivation delay and reactivation block available. Manual reset possible with external circuit integration.

Compact DIN rail mount design with screw terminals. Green LED indicator for closed contact status visibility. Complies with IEC 255, VDE 0435, CE, and RoHS standards. Operates reliably in temperatures from -60°C to +60°C.

Switching voltage rated at 250 V AC with 8 VA power consumption. German-made quality with IP20 and IP40 protection ratings. Explore the range of Monitoring Relays available for industrial and electrical automation use on EnvMart for quality assurance and industrial-grade products.