Cast Resin Powerbar


IP68 rated busbar for use outdoors and in hostile environments.

E+I Engineering’s Cast Resin Powerbar (CRB) is a 1000 Volt, maintenance free busbar system for use in outdoor, hazardous or life safety applications. The conductor is totally encapsulated in a fire retardant, self-extinguishing and homogenous polymer concrete.

Cast Resin Powerbar ranges from 800A to 6300A and is available in multiple configurations including neutral, double neutral and earth


Explosive atmosphere (ATEX) approved to IEC 60079

High resistance to fire (IEC 60331-1/ ISO834)

Ingress protection rating IP68

Available in ratings up to 6300A

Available with a choice of copper/ aluminium conductor

Chemical resistance


Maintenance free design reduces lifetime costs associated with the project.

Cast Resin Powerbar can be connected directly to High Powerbar through a specialised jointing system to form a complete power distribution system.

Bespoke shapes can be created to conform to the layout of any specific building i.e. to conform to an uneven wall, placement of pipes etc.

The low impedance design of CRPB with a minimum distance between each conductor reduces resistance to the current passing through which results in a low voltage drop.

The fire-retardant self-extinguishing resin casing has a certified fire rating of F180, which means it can supply continuous current under fire conditions for 3 hours.


Busbar system ampacity

800A – 6300A

Busbar system short circuit rating (1s)

25 – 100 kA

Rated operational voltage

1000 V

Ingress protection



Cast Resin Powerbar