Dold Undervoltage Monitoring Relay, 3 Phase and 1 Phase, 0 to 500 V Monitor Range IL5880.12 AC50-400Hz 220-240V 5-100kOHM

The Dold IL5880.12 AC50-400Hz 220-240V 5-100kOHM is a high-performance undervoltage monitoring relay designed for 3-phase and single-phase AC and DC electrical networks. It offers reliable insulation monitoring across a 0 to 500 V display range and supports network frequencies of 50 to 400 Hz, making it adaptable to diverse industrial power systems.

This relay features a double-pole double-throw (DPDT) contact configuration which enables effective switching capacity with contact currents rated at 4A and switching voltage up to 230V AC. The device is supplied with a wide DC voltage range of 110 to 240 V, allowing flexible installation in various industrial power grid conditions.

Compact in size, the relay measures 90mm in height, 61mm in length, and 35mm in width, and mounts seamlessly on DIN rails enhancing ease of assembly and integration in control panels. It includes useful features such as LED indicators for operational readiness and insulation error detection, programmable memory and hysteresis functionality, as well as delete and test buttons for maintenance convenience.

The adjustable alarm value ranging from 5 to 100 kΩ ensures precise monitoring tailored to specific industrial requirements. The galvanic isolation between measuring circuit, auxiliary voltage, and output contacts enhances system safety by preventing unwanted interference and electrical noise.

With operating temperature tolerances from -20°C to 60°C and an ingress protection rating of IP20 and IP40, the relay is suitable for harsh industrial environments. It complies with globally recognized standards such as IEC/EN 61 557-8, IEC/EN 61 373, DIN VDE 0100-551, and others, reflecting its quality and safety assurances.

This monitoring relay is ideally suited for use in electrical automation, industrial machinery, power distribution networks, and other commercial applications requiring accurate insulation resistance monitoring of unearthed AC and DC networks. Its robust construction and features support operational reliability and preventive maintenance in electrical systems.

Provides accurate insulation resistance monitoring from 0 to 500 V voltage range. Features a DPDT contact configuration for versatile switching applications. Designed for DIN rail installation with dimensions 90mm (H) x 61mm (L) x 35mm (W).

Equipped with LED indicators for operating status and insulation fault diagnostics. Adjustable alarm threshold from 5 to 100 kΩ. Supports AC network frequencies from 50 to 400 Hz. Galvanic isolation of measuring circuit, auxiliary voltage, and output contacts.

Operating temperature: -20°C to 60°C with IP20 and IP40 ratings. Complies with multiple international standards including IEC, VDE, and DIN. Suitable for industrial automation and electrical network safety monitoring. Explore more reliable Monitoring Relays and electrical components on EnvMart for your industrial automation and control needs.