Moulded Case Circuit Breaker (MCCB) Zs Values

This page provides links to MCCB (60947-2) manufacturer specification for the Zs values relating to MCCBs:

    Moulded Case Circuit Breaker (MCCB) Zs Values- The maximum Zs tables and charts for BS EN 60947-2 MCCB’s varies between manufactures, device and device setting, there isn’t a quick Zs calculation for 60947-2 protection devices. This page aims to provide links to the manufacturers data table so that you can determine the Zs values from the manufacturer's literature.

  1. DORMAN SMITH
  2. EATON
    1. NZM Series MCCB’S
  3. HAGER
    1. 125, 250, 400, 630A frame MCCBs
      1. Date:?
      2. PDF:Table 40, Page: 3.55 Hager_MCCB_Zs Values-125 250 400 630 frames _3ProtectionDevices
      3.  Website link
    2. X160 & X250 frames
      • Date:?
      • PDF: 
      • Website:
  4.  SCHNEIDER
    1. NS and NSX

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