Ferroxcube E cores and accessories E55/28/21 General data for E55/28/21 coil former without pins (A) PARAMETER SPECIFICATION Coil former material polyamide (PA6.6), glass reinforced, flame retardant in accordance with “UL 94-HB”; UL file number E41938(M) Maximum operating temperature 130 C, “IEC 60085”, class B handbook, full pagewidth 36.6 37 19 33.7 16.9 42.15 21.1 max. min. CBW065 Dimensions in mm. Fig.3 E55/28/21 coil former (A). Winding data for E55/28/21 coil former without pins (A) NUMBER OF SECTIONS MINIMUM WINDING AREA (mm2) NOMINAL WINDING WIDTH (mm) AVERAGE LENGTH OF TURN (mm) 1 277 33.7 113 TYPE NUMBER CP-E55/28/21-1S-A