North America; Other Regions; Selecting The Main Contactor (Breaker); Cabinet-Installed Multidrives - ABB ACS880 Electrical Planning Manual

14 Electrical planning guidelines
• switch-disconnector, with or without fuses, in accordance with IEC 60947-3, utilization
category AC-23B or DC-23B
• disconnector that has an auxiliary contact that in all cases causes switching devices to
break the load circuit before the opening of the main contacts of the disconnector (EN
60947-3)
• a circuit-breaker suitable for isolation in accordance with IEC 60947-2.

North America

Installations must meet the requirements of UL (UL 508C) and/or CSA C22.2 No. 14 and
be compliant with NFPA 70 (NEC) and/or Canadian Electrical Code (CE) along with state
and local codes for your location and application. (NFPA 70 (NEC) = National Fire Protection
Association 70 (National Electric Code).

Other regions

The disconnecting device must conform to the applicable local safety regulations.

Selecting the main contactor (breaker)

￭

Cabinet-installed multidrives

Depending on the drive size, you can order it either with a main contactor (option +F250),
or a main breaker (option +F255).
￭

Multidrive modules

You can order a pre-selected main contactor (breaker) from ABB. See the appropriate drive
or supply module hardware manual.
Obey these guidelines when you select a customer-defined main contactor:
• Dimension the contactor according to the nominal voltage and current of the drive. Also
consider the environmental conditions such as ambient temperature.
• Select contactor with utilization category AC-1 (number of operations under load)
according to IEC 60947-4, Low-voltage switch gear and control gear.
• Consider the application life time requirements.