BAYLAN BTK.40 Digital Three-Phase Energy Meter, Indirect 5A CT, MID Certified, RS485 Modbus RTU, DIN Rail 32025

The BAYLAN BTK.40 stands out as a MID-certified three-phase energy meter designed for indirect connection via current transformers, making it ideal for commercial and industrial submetering where high currents demand accurate measurement. Unlike direct-connected meters, its 5A CT input ensures safe and precise monitoring of large loads.

Highlights

• MID certified for billing accuracy (Class 1 active energy)
• Indirect connection via 5A current transformers (configurable ratio up to 9999/5A)
• RS485 Modbus RTU interface for seamless integration into energy management systems
• Bi-directional measurement of active and reactive energy (import/export)
• Compact DIN rail mounting (4 modules) with backlit LCD display

In daily use

The BTK.40 provides real-time visibility into all key electrical parameters: voltage, current, power, power factor, and frequency. Its two configurable S0 pulse outputs allow easy connection to external monitoring or billing systems. The backlit LCD ensures readability even in low-light electrical cabinets, while the IP51 front protection guards against dust and moisture ingress.

Full specifications

• Meter type: Digital three-phase energy meter
• Connection: Indirect via current transformer (CT), 5A secondary
• Nominal voltage: 3x230/400 V AC
• Frequency: 50/60 Hz
• Accuracy: Class 1 (active energy)
• Communication: RS485 (Modbus RTU)
• Measured parameters: Active/reactive energy (import/export), voltage, current, power, power factor, frequency
• Pulse outputs: 2x S0 (configurable)
• Mounting: DIN rail, 4 modules
• Operating temperature: -25°C to +55°C
• Protection class: IP51 (front)
• Wiring: 3-phase 4-wire or 3-phase 3-wire

Final note

The BAYLAN BTK.40 combines MID-certified accuracy with flexible RS485 communication, making it a reliable choice for professional energy monitoring and submetering applications.