It seems I don't have access to the page you're viewing, but I found some information online about the KL3403 Bus Terminal. Here's a brief description in points:

• Type: 3-phase power measurement terminal.

• Inputs: Measures 3 currents and 3 voltages.

• Voltage Range: Up to 500 V AC.

• Current Range: Up to 1 A (via measuring transformers).

• Resolution: 16-bit (internal 21-bit).

• Features: Calculates effective power, energy consumption, apparent power, and phase shift angle.

• Measurement Method: True RMS with 64,000 samples per second.

• Update Time: 50 ms per measured value.

• Special Features: Includes energy meter and network analysis options.

• Housing: Compact terminal housing with signal LEDs.

• Approvals: CE, UL certified.