SIEMENS Busbar System 8US1923-3AA01 3-Pole 250 A 1250 mm

Rated for 250 A continuous current and 690 V AC, this 3-pole busbar system handles demanding power distribution with a short-time withstand of 15 kA for 1 second. The 1250 mm length and 185 mm system center distance integrate directly into Siemens SIVACON 8US assemblies.

Overview

The SIEMENS 8US1923-3AA01 is a 3-pole busbar system designed for low-voltage power distribution in industrial and commercial switchgear. It uses electrolytic copper conductors with tin plating for reliable, low-resistance connections. The system operates at 50/60 Hz and supports rated operational voltage up to 690 V AC.

What stands out

• High current capacity: 250 A rated current with 30 kA peak withstand
• Robust insulation: 1000 V rated insulation voltage and 8 kV impulse withstand
• Wide temperature range: -25 °C to +55 °C operating, -40 °C to +70 °C storage
• Humidity tolerance: 95% relative humidity at 55 °C
• Compliance with IEC 61439-1/-2 for low-voltage switchgear assemblies

Technical details

• Product type: Busbar system
• Number of poles: 3
• Rated current (In): 250 A
• Length: 1250 mm
• System center distance: 185 mm
• Rated operational voltage (Ue): 690 V AC
• Rated insulation voltage (Ui): 1000 V
• Rated impulse withstand voltage (Uimp): 8 kV
• Rated frequency: 50/60 Hz
• Rated short-time withstand current (Icw): 15 kA (1 s)
• Rated peak withstand current (Ipk): 30 kA
• Busbar material: Electrolytic copper (E-Cu), tin-plated
• Operating temperature: -25 °C to +55 °C
• Storage temperature: -40 °C to +70 °C
• Relative humidity: 95% at 55 °C
• Compatibility: Siemens SIVACON 8US system

Our verdict

A reliable, high-current busbar solution for SIVACON 8US switchgear, built to withstand harsh electrical and environmental conditions.