60947-2 Max Zs Charts
The maximum Zs tables and charts for BS EN 60947-2 MCCB’s varies between manufactures and specific to the MCCB part number, then again depending on the settings of the actual MCCB device. Due to the many variables there isn’t a quick Zs calculation for 60947-2 MCCB (moulded case circuit breaker) or ACB (air circuit breaker) protection devices.
In order to obtain the correct Zs value for ACB’s and MCCB’s you need to refer to the manufacturers data table for the specific device part number and specific device settings.
We are aware on how time consuming it can be trying to locate the Zs value for a BS EN 60947-2 MCCB or ACb, therefore we designed and developed the Max Zs Values App which includes all common protective devices such as MCB’s, Fuses and RCBO’s along with a selection of manufacture specific MCCB’s, the Max Zs Values app is available on iPhone, iPad and Android