• Power Supply: Nominal voltage options include 3 x 230 (400) V, 3 x 127 (230) V, and 3 x 63.5 (110) V with a tolerance of 80% to 115% Un. Consumption is less than 2 W and 10 V·A, with a frequency of 50 or 60 Hz.
• Voltage Measurement: Asymmetrical connection with reference voltage options similar to power supply. Voltage consumption is less than 2 W and 10 V·A.
• Current Measurement: Nominal reference current options are 1 (2) A, 1 (6) A, 2.5 (10) A, or 5 (10) A. Start-up current is less than 0.04 x Itr, and minimum current is less than 0.2 x Itr. Current consumption is less than 0.1 V·A.
• Accuracy Class: Active energy accuracy is EN 50470 (Class B) and IEC 62053-21 (Class 1). Reactive energy accuracy is IEC 62053-23 (Class 2).
• Memory: Non-volatile memory for data and serial flash for setup and events.
• Battery: Lithium type with a working life of over 20 years at 30 ºC.
• Clock: Gregorian calendar with a temperature compensated oscillator, accuracy of less than 0.5 s/day at 23 ºC.
• Environmental Influence: Operating temperature range is -40 to +70 ºC, storage range is -40 to +85 ºC, with a temperature coefficient of less than 15 ppm/K and humidity up to 95% max.
• Insulation: Insulating voltage is 4 kV at 50 Hz for 1 min, impulse voltage is 8 kV, and protection degree is II.
• Display: LCD type with up to 8 data digits, 8 mm size, and readable without voltage.

The CIRWATT B 410T is suitable for installation in low and medium voltage networks, ideal for high and medium consumption installations such as shopping malls, industries, and high consumption households. It complies with the European Directive MID (EN 50470) and relevant IEC standards.

• Communications: Optical interface with serial, two-directional communication, supporting protocols like REE based on IEC 870-5-102.
• Tampering Detection: Micro-switch type for detecting intrusions when there is no voltage.
• Construction Features: Asymmetrical connection with DIN standard dimensions and IP 51 protection degree.
• Load Curve: Supports two load curves with programmable integration time and a recording depth of 4000.
• Events: Can record up to 200 events with billing closures and programmable date and hour.
• Communications Expansion: Supports RS-232, RS-485, and Ethernet with various input/output configurations.

Various configurations are available with different communication types and measuring ranges, suitable for different voltage and current settings.