Feeder lengths account for the bulk of a busbar run. Distribution lengths are like feeder lengths but with tap off slots.

Tap off slots allow tap off units to be plugged into the busbar run. The tap off slot outlet and cover are made from a durable, high strength, Class B, 130°C insulation material.

The tap off slot cover is designed to prevent access to the contacts behind the cover and prevent the entry of dirt, dust or moisture.

With a standard tap off unit or cover fi tted the Ingress Protection (IP) level is at IP55 but higher levels, up to IP67, can be achieved upon request.

Unit of Measure


N/A Feeder Length

Housing Type

N/A Small


N/A Indoor


N/A Aluminium


N/A MPB3 Series

Mounting Type

N/A Flatwise/Edgewise



Insulation Class

N/A Class B, 130°C

Industry Standards

N/A IEC61439-1 and IEC61439-6

Certification Marks

N/A IP52. IP54 & IP55

Conductor Material

N/A Aluminium

Number of Poles

N/A 5

Busbar Rating

N/A 400 A


N/A 50/60 Hz

Rated Operational Voltage

N/A 690 V

Rated Insulation Voltage

N/A 1000 V

Short Circuit Rating [1 sec]

N/A 22 kA rms

Short Circuit Peak Value

N/A 46.2 kA

Short Circuit Rating - ICC

N/A 100 kA

Phase Conductor - Cross Sectional Area

N/A 256 mm²

Isolated Earth Conductor - 100% Earth Cross Sectional Area

N/A 256 mm²

Resistance at 20°C

N/A 0.104 mΩ/m

Resistance at 80°C

N/A 0.129 mΩ/m

Reactance at 50Hz

N/A 0.098 mΩ/m

Impedance at 80°C

N/A 0.162 mΩ/m

Total Length

N/A 600 to 3000 mm

Busbar Width

N/A 165 mm

Busbar Height

N/A 61 mm

Length [Min]

N/A 600 mm

Length [Max]

N/A 3000 mm


N/A 32 mm