Electric meter ORNO OR-WE-503 — electronic power meter, 230 V, 5 A, 50 Hz, white

ORNO OR-WE-503 is a single-phase electricity meter designed to measure active energy in 230 V electrical installations with a maximum current of 80 A. The meter provides clear consumption readings on an LCD display and includes a pulse output for remote counting or integration with data loggers and building management systems. Its compact DIN-rail compatible housing and standard connection terminals make it suitable for residential and light commercial installations where accurate energy measurement and simple data export are required.

Advantages

The ORNO OR-WE-503 combines direct single-phase measurement with a clear LCD readout, enabling easy verification of real-time and cumulative consumption. The built-in pulse output allows connection to external monitoring equipment or centralized metering systems without modifying the primary measurement circuit. Low standby power consumption and a robust mounting arrangement ensure long-term stability and reliable operation under normal domestic and light commercial loads.

Suitable for

• Residential apartment and house energy monitoring
• Small commercial premises and office metering
• Integration with data loggers and building management systems via pulse output
• Energy auditing and consumption verification for single-phase circuits

Key specifications

• Supply voltage: 230 V AC single-phase
• Maximum current: 80 A (direct connection)
• Measurement type: active energy (kWh)
• Display: LCD for cumulative consumption and numerical readout
• Output: pulse output for remote counting and integration
• Mounting: DIN-rail compatible housing with screw terminals
• Operating environment: designed for residential and light commercial electrical systems

How to use

Install the meter on a suitable DIN rail inside the distribution board and connect the line and neutral conductors to the designated terminals according to the wiring diagram supplied with the device. Ensure the meter is securely fixed and that all connections are tightened to the recommended torque. Read the cumulative kWh value from the LCD display. To use the pulse output, connect the pulse counting input of an external logger or building management system to the meter's pulse terminal and configure the external device to recognise the pulse rate specified by the meter documentation.

Usage recommendations

Use the ORNO OR-WE-503 within its rated voltage and current limits and follow local electrical codes during installation. For accurate long-term measurements, verify connection integrity periodically and protect the meter from moisture and excessive dust. When integrating with data loggers or BMS, check pulse polarity and pulse constant in the documentation to ensure correct energy accounting.