part number designation 20 for more information please phone 01638 665161 continued on next page sf 2020 iec inlet filter with voltage selector & fuseholder. sf 2020 rated leakage current inductance connections number mounting approvals current a @ 250v 50hz mh input output of fuses sf 2020-2/ * / ? 2 0.2ma 2.0 iec 320 6.3 x 0.8 faston 1 snap-in sf 2022-2/ * / ? 2 0.2ma 2.0 iec 320 6.3 x 0.8 faston 2 snap-in sf 2024-2/ * / ? 2 0.2ma 2.0 iec 320 6.3 x 0.8 faston 1 screw mount sf 2026-2/ * / ? 2 0.2ma 2.0 iec 320 6.3 x 0.8 faston 2 screw mount sf 2020-6/ * / ? 6 0.2ma 0.5 iec 320 6.3 x 0.8 faston 1 snap-in sf 2022-6/ * / ? 6 0.2ma 0.5 iec 320 6.3 x 0.8 faston 2 snap-in sf 2024-6/ * / ? 6 0.2ma 0.5 iec 320 6.3 x 0.8 faston 1 screw mount sf 2026-6/ * / ? 6 0.2ma 0.5 iec 320 6.3 x 0.8 faston 2 screw mount .15 .4 1 4 10 40 100 500 frequency mhz db 90 80 70 60 50 40 30 20 10 .1 2 & 6 amp approved ? submitted for approval temperature range : -25 0 c to +85 0 c operating voltage : 250vac operating frequency : 0 to 400hz test voltage : l+n to ground, 2700vdc, 2 seconds iec 950 (en 60950) applications) twin fused versions only mounting style/fuse variants sf 2020 snap-in with one fuse sf 2022 snap-in with two fuses sf 2024 screw mount with one fuse sf 2026 screw mount with two fuses * - switching arrangement /1 for tapped transformer 110, 220, 240v /2 for separate winding tapped transformer series/parallel 100, 120, 220, 240v /3 for separate winding transformer series/parallel 115, 230v ? - fuse size / * /1 5mm dia x 20mm / * /2 6.3mm dia x 32mm (0.25 dia x 1.25 ) panel thickness dim a 0.8 to 2.0 56.00.1 2.1 to 3.2 56.30.1 54.3 40 3.2 50 32 dim a 56 3.6 400.2 29.0 53.5 5.5 dimensions all dimensions are nominal and in mm panel cut out screw mounting panel cut out snap in 28.60.1 symmetric asymmetric r3.0 r3.0 front and rear mounting front mounting
21 for more information please phone 01638 665161 sf 2020 circuit diagrams series/series connection of tapped transformer in single fuse version use h2 instead of h1 voltage contacts 110v b,e 220v b,c 240v a voltage contacts 100v a,c,e 120v b,c,e 220v a,d 240v b,d voltage contacts 115v a,c,e 115v b,c,e 230v a,d 230v b,d n l1 l1 l1 l1 l1 l1 h2 h1 external switch b a b c d 110v 220v 240v e f e d c a g e l 2x2,200pf (y) 0.047f (x2) n h2 h1 external switch b a b c d 120v 100v 120v e f e d c a g e l 2x2,200pf (y) 0.047f (x2) n h2 h1 external switch b c a b c d 115v 115v e f e d a g e l 2x2,200pf (y) 0.047f (x2) continued from previous page series/parallel connection of separate winding transformer with one tap in single fuse version use h2 instead of h1 series/parallel connection of separate winding transformer in single fuse version use h2 instead of h1 note the circuits are shown with an external (2 pole - 2 way) on/off switch. for use without external switch, make the following connections: circuit 1 h1 (or h2) to transformer neutral g to b circuit 2 h1 (or h2) to f g to b circuit 3 h1 (or h2) to f g to c
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