Orno WE-525 DIN-Rail Energy Meter – 100A, RS485 Modbus-RTU & MID Class B

The Orno WE-525 measures active power and records electrical energy consumption directly in a single-phase circuit, displaying readings in kWh on its backlit LCD (5+2 digits). It supports remote register reading across a wired RS485 network using the Modbus-RTU protocol, suitable for sub-metering and energy monitoring installations.

An internal lithium battery keeps the real-time clock accurate to 0.5 sec/day. The meter fits in a single 18mm-wide module and mounts on a standard 35mm DIN-rail.

Key Features

• Single-phase active energy meter, 230V~ 50Hz
• 5A base current, 100A maximum current, 0.25A minimum
• 1000 imp/kWh pulse frequency, Class B accuracy
• RS485 Modbus-RTU communication for remote register reading
• Backlit LCD with 5+2 digits for kWh display

Product Benefits

• MID-certified (2014/32/EU) for billing-grade energy measurement
• Compact single-module 18mm width fits tight panel spaces
• Modbus-RTU integrates the meter into building management systems
• Lithium-backed real-time clock keeps time during power outages
• Direct connection up to 100A removes the need for external CTs

Technical Specifications

• Type: Single-phase
• Nominal Voltage: 230V~ 50Hz
• Base Current (Ib): 5A
• Maximum Current (Imax): 100A
• Minimum Current: 0.25A
• Pulse Frequency: 1000 imp/kWh
• Accuracy Class: B
• Display: Backlit LCD, 5+2 digits
• Communication: RS485, Modbus-RTU
• IP Rating: IP51
• Modules: 1
• Dimensions (HxWxD): 90x18x60mm
• Mounting: DIN-rail TH-35mm
• Standards: EN50470-1:2006, EN50470-3:2006, MID 2014/32/EU
• Multi-tariff: No
• Pulse Output: No

Why You'll Love It

• Slim 18mm module frees up panel space for other devices
• Modbus-RTU exposes live readings to PLCs, gateways, and dashboards
• MID Class B certification supports use for tenant or sub-tenant billing
• Package includes 1x Orno WE-525 Single-Phase Energy Meter 100A and English manual