Comb busbar, 4P, 63A 3 modules BIS4-3PN-12 404954

Application and construction of the comb busbar

The BIS4-3PN-12 comb busbar is a horizontal supply busbar designed for quick and safe connection of modular devices in electrical distribution boards. The four-pole construction (4P) enables simultaneous supply of three phases and the neutral conductor, making it an ideal solution for three-phase installations.

The construction with a width of 3 modules allows for installation of a maximum of 3 modular devices, providing a compact installation in standard distribution cabinets. The busbar with a length of 213 mm corresponds to one row of modules, and the spacing between connection points is 17.8 mm, which guarantees optimal distribution of elements.

The cross-section of 10 mm² provides an adequate conducting surface for currents up to 63A, while maintaining compact dimensions. The busbar is factory-insulated and available in gray color, which facilitates identification in the installation.

Electrical parameters and safety

The device operates at a maximum rated voltage Ue = 400V, which allows for application in typical industrial and commercial installations. The rated continuous current Iu = 63A guarantees adequate load capacity for most distribution applications.

Installation safety is ensured by short-circuit parameters: conditional short-circuit current Iq = 0.63 kA and withstand short-time current Icw = 1.2 kA. These values determine the busbar's resistance to the effects of possible short circuits in the circuit.

The impulse voltage of 2 kV indicates high resistance to atmospheric and switching overvoltages. The busbar is designed for connecting devices equipped with a neutral conductor (N), but does not have auxiliary contacts.

Installation and operating conditions

Busbar installation is extremely simple thanks to the ability to cut it to any required length - the user can adjust the length to the specific number of devices being mounted. This flexibility eliminates the need for additional spacer elements or manual shortening of the standard length.

The device can operate at temperatures from -20°C to +50°C, which allows installation both in heated indoor spaces and in unheated distribution panels. Storage temperature ranges from -40°C to +70°C, providing wide logistical possibilities.

The structural height is 27.7 mm, which allows mounting even in shallow distribution enclosures.