Dold Monitoring Relay 3 Phase SPDT DIN Rail 110V AC 230V AC 24V DC BH9097.38/001 3AC400V AC40A

Dold BH9097.38/001 3AC400V AC40A Monitoring Relay is a high-performance 3-phase load monitor designed for motor control applications in industrial electrical drive systems. It supports supply voltages of 110V AC, 230V AC, and 24V DC and is mounted on a DIN rail for easy integration.

This relay allows for precise monitoring of actual power consumption, enabling early detection of motor load variations and potential failures. It is configurable via DIP switches for negative load and overload monitoring modes, with calibrated absolute values using rotary switches for preliminary warning levels P1 and P2. The test/reset buttons facilitate straightforward start-up, while two LEDs clearly indicate relay switch status.

Designed for motors up to 22 kW at 3 AC 400 V without requiring an auxiliary voltage, this relay can handle loads up to 40 A without the need for an external current transformer. Its compact dimensions of 45mm width, 84mm height, and 121mm length allow space-efficient installation.

The device is built robustly, offering protection ratings of IP20 and IP40, and uses screw terminals for secure electrical connections. It operates reliably within a temperature range from +55°C up to 55°C maximum.

Compliance with international standards such as IEC/EN 61000-4-2, EN 50005, DIN 46228, and IEC 60255 series ensures high quality and regulatory adherence. The relay is made in Germany, reflecting its manufacturing excellence.

Monitors power consumption of industrial electrical motors for protective control. Configurable overload and negative load monitoring with calibrated settings. Test and reset functions simplify commissioning and maintenance.

Clear LED indicators show relay switch states for operational clarity. Robust design with IP20 and IP40 ingress protection ratings. Supports motors up to 22 kW at 3 AC 400 V without auxiliary power. Accommodates load current up to 40 A without external current transformer.

Compact DIN rail mount design for easy installation. Meets multiple international IEC, EN, and DIN certification standards.

This Monitoring Relay is essential for industrial, manufacturing, and automation environments where reliable motor load monitoring improves safety and prevents costly machinery failures. EnvMart customers can explore a wide range of monitoring and control devices for industrial applications in this category.