Dold Monitoring Relay SPDT Contact Configuration DIN Rail Mount MK9052.11 AC50/60Hz 230V

Dold MK9052.11 AC50/60Hz 230V monitoring relay is a precision device designed for thermal overload protection of motors in diverse industrial applications. Its SPDT contact configuration and DIN rail mounting make it suitable for seamless integration into automated control panels.

The relay includes a specialized input designed for thermistor sensors such as PTC resistors to monitor motor temperature effectively. It also features a wire breakage detection circuit that enhances operational safety by detecting sensor circuit faults. The relay operates on a rest current principle with a 20 ms time delay, ensuring prompt and reliable response to overload conditions.

With a compact footprint (99 mm by 82 mm by 22.5 mm) and low power consumption of 1.8 VA, this device offers efficient performance without excessive energy use. The device is rated IP40 for protection against solid foreign objects in typical industrial settings, ensuring durability and long service life. Its operating temperature range up to 60°C makes it ideal for high ambient temperature environments.

The product conforms to various international standards including IEC/EN 60 715, EN 50 005, IEC/EN 60 947-5-1, and others ensuring quality and certified safety compliance. The LED indication provides immediate visual feedback of the relay's switching status, aiding in quick diagnostics and maintenance.

This monitoring relay is predominantly used in electrical, industrial automation, manufacturing, and HVAC systems to protect motors from thermal overloads caused by excessive current, poor cooling, or operational faults. Its robust construction and reliable sensor interface make it an essential component in advanced motor protection schemes.

Equipped with single input for thermistor or bi-metallic temperature sensors. Detected sensor wire breakage promptly safeguards motor operation. LED indicators for clear switching status display enhancing diagnostics. Compact DIN rail mount suitable for modular electrical control panels.

International standard certifications ensure compliance and safety. Designed to switch off motors on reaching preset temperature thresholds. Ideal for industrial and commercial motor protection applications. Explore EnvMart's comprehensive selection of Monitoring Relays and electrical automation solutions for superior reliability and operational safety in your projects.