BRITISH STYLE– SEMICONDUCTOR PROTECTION FUSES The Edison British Style semiconductor protection fuses Replacement Table — “T” to “F” (660V) include a 660VAC line utilizing new filler technology. These New “F” Range new fuses have greatly reduced peak let-through current Earlier Lowest Highest and energy under fault conditions and hence extend fuse “T” Range Rating Rating protection capability. They can be recognized by the letter 6CT 6FC 6FC “F” in their catalog number. Application and technical data 10CT 10FC 10FC for these 660VAC “F” fuses and the original line of 240VAC 12CT 12FC 12FC British “T” type fuses are presented on the following pages. 16CT 16FC 16FC 20CT 20FC 20FC 25ET – – 32ET 35FE 35FE “F” Range 35ET 35FE 40FE This is a superior design of fuses in the same physical 40ET 40FE 45FE package as the “T” range. 45ET 45FE 50FE 56ET 63FE 63FE Equivalent Ratings 63ET 63FE 71FE This table shows the suggested equivalent ratings to – – 80FE replace a “T” with an “F”. – – 90FE 80ET 80FE 100FE Because of the new design technology it has been possible 65EET – – 2 to obtain the equivalent energy let-through I t with a higher 75EET – – 90EET – 100FEE amp rated fuse hence reducing the possibility of premature 110EET – 120FEE operation. – – 140FEE 140EET 140FEE 160FEE This table gives a range of suggested acceptable new “F” – – 180FEE type to replace the earlier “T” type. 160EET 160FEE 200FEE – – 180FM To upgrade your protection to the new “F” series select a 160MT 200FM 200FM fuse rating within the range shown that suits your circuit 180MT 225FM 225FM inrush requirements. You will still have the same or better 200MT 250FM 250FM protection of your semiconductor devices. – 280FM 280FM 250MT 315FM 315FM 280MT 350FM 350FM It should be remembered that to protect devices we must 315MT 350FM 350FM consider the energy let-through of the selected fuse. The 355MT 350MT 350FM label amp rating will relate to the full load current and the 180MMT 180FM 180FM circuit inrush amps. 200MMT 200FM 200FM 225MMT 225FM 225FM The suggested replacements are based on: 280MMT 280FM 280FM a. Similar surge withstand to normal circuit overloads. 315MMT 315FM 315FM 2 b. Lower total I t let-through. 355MMT 350FM 350FM This gives enhanced reliability due to the use of a higher – – 400FMM current rated fuse which avoids nuisance operation and still – – 450FMM gives improved short-circuit protection. 400MMT 500FMM 500FMM 450MMT 550FMM 550FMM 500MMT 630FMM 630FMM 560MMT 700FMM 700FMM 630MMT 700FMM 700FMM 710MMT 700FMM 700FMM 84 BRITISH STYLE– SEMICONDUCTOR PROTECTION FUSES 660 VOLT (AC) RANGE 2 2 I t (A SEC) Carton Part Clearing Clearing Watts D.C. Carton Weight Type Outline Number Pre-arc At 415V At 660V Loss Volts Qty. (Kg) 6FC 1.5 6 8 3 20 0.160 10FC 6 18 30 3 20 0.160 FC 12FC 9 26 45 3 660 20 0.160 16FC 13 44 65 6 20 0.160 2.53" 64.3mm 20FC 30 100 160 6 20 0.160 25ET 25 150 250 7 10 0.420 450 ET 32ET 32 190 350 11 10 0.420 35FE 33 130 200 9 10 0.420 40FE 52 180 300 9 10 0.420 45FE 76 270 450 11 10 0.420 50FE 103 380 600 11 10 0.420 2.50" FE 63FE 135 480 750 12 450 10 0.420 63.5mm 71FE 210 600 950 17 10 0.420 80FE 250 900 1500 20 10 0.420 90FE 360 1300 2100 20 10 0.420 100FE 470 1800 2800 23 10 0.420 65EET 210 2000 3000 20 5 0.450 EET 75EET 420 2600 4400 20 450 5 0.450 90EET 490 3000 4500 19 5 0.450 100FEE 400 1600 2400 24 5 0.450 120FEE 540 1900 3100 32 5 0.450 2.76" FEE 140FEE 850 2500 3800 36 450 5 0.450 70.0mm 160FEE 1000 3700 5700 46 5 0.450 180FEE 1400 5300 8400 46 5 0.450 200FEE 1900 7100 11400 52 5 0.450 180FM 1400 7500 13500 40 1 0.240 200FM 2600 10500 18500 40 1 0.240 225FM 3700 14500 26500 44 1 0.240 FM 250FM 5200 20500 37500 48 450 280FM 7000 30500 55000 48 1 0.240 315FM 10000 40000 77000 55 1 0.240 3.15"-3.35" 350FM 15000 60000 105000 55 1 0.240 80-85mm 400FMM 10000 40000 72500 85 1 0.450 450FMM 15000 60000 105000 90 1 0.450 FMM 500FMM 20000 82000 15000 100 1 0.450 550FMM 30000 120000 215000 100 450 1 0.450 630FMM 45000 180000 310000 100 1 0.450 700FMM 60000 245000 420000 120 1 0.450 3.15"-3.35" 80-85mm • Interrupting rating 200kA RMS Symmetrical. • Watts loss provided at rated current. 85 • These fuses meet the requirements of BS 88 Part 4 and IEC 269-4 • Consult Edison for UL Recognition information BRITISH STYLE– SEMICONDUCTOR PROTECTION FUSES 240 VOLT (AC) RANGE 2 2 I t (A SEC) Carton Part Clearing Clearing Watts D.C. Carton Weight Type Outline Number Pre-arc At 120V At 240V Loss Volts Qty. (Kg) 6LCT 2 6 9 1.0 20 0.110 10LCT 3.8 12 22 2.5 20 0.110 LCT 12LCT 7 22 32 2.5 200 20 0.110 16LCT 20 50 100 2.5 20 0.110 1.50" 38.0mm 20LCT 25 80 160 4.0 20 0.110 7LET 1.7 10 17 1.5 10 0.310 10LET 3.8 23 35 1.8 10 0.310 12LET 7 42 58 2 10 0.310 16LET 15 70 140 2.5 10 0.310 25LET 18 120 250 4.0 10 0.310 32LET 32 200 450 5.0 10 0.310 LET 35LET 50 320 600 5.0 140 10 0.310 1.65" 50LET 100 500 1400 7.0 10 0.310 41.8mm 63LET 180 1100 2200 9.0 10 0.310 80LET 300 1900 3800 10.0 10 0.310 100LET 600 3800 7500 10.0 10 0.310 125LET 600 3800 7500 10.0 10 0.310 160LET 1100 7000 18000 20.0 10 0.310 180LET 1600 12000 29000 21.0 10 0.310 160LMT 1100 7000 16000 17.0 1 0.180 200LMT 1500 10000 20000 28.0 1 0.180 250LMT 3200 20000 40000 28.0 1 0.180 LMT 315LMT 6000 35000 75000 35.0 160 1 0.180 355LMT 8000 50000 100000 35.0 1 0.180 400LMT 14000 70000 160000 40.0 1 0.180 2.32" 450LMT 18000 100000 220000 42.0 1 0.180 59.0mm 400LMMT 6000 35000 80000 60.0 1 0.370 400LMMT 14000 80000 170000 64.0 1 0.370 400LMMT 24000 150000 300000 75.0 160 1 0.370 LMMT 400LMMT 32000 200000 460000 77.0 1 0.370 400LMMT 52000 300000 600000 82.0 1 0.370 400LMMT 75000 400000 800000 97.0 1 0.370 2.32" 59.0mm • Interrupting rating 200kA RMS Symmetrical. • Watts loss provided at rated current. • All fuses above have been tested to 318VAC. • These fuses meet the requirements of BS 88 Part 4 and IEC 269-4 • UL Recognition on LET and LMT. Others pending – Consult Edison. 86 BRITISH STYLE– SEMICONDUCTOR PROTECTION FUSES DIMENSIONS in Millimeters Type A B C D E F G H FC 74.6 64.3 54.8 8.7 8.7 6.4 4 5.5 LCT 47 38 28 8.4 8.7 6.4 4 5.5 FE & ET 77 63.5 48 17.7 19.1 12.7 7.1 9.7 LET 56 41.8 26.2 17.7 19.1 12.7 7.1 9.7 FEE & EET 94 70 46 37 19 31.8 8.7 11.9 FM 113 80-85 50 38 41.5 25.4 10.3 14 LMT 84 59 31 38.1 41 25.4 10.3 13.5 FMM 113 80-85 50 83 38 25.4 10.3 14 LMMT 84 59 31 83 38 25.4 10.3 13.5 FE, ET & LET FEE & EET FC & LCT FM & LMT FMM & LMMT 87 BRITISH STYLE– SEMICONDUCTOR PROTECTION FUSES AMPERE RATING 30 660V Time-Current Curves 10 FEE (100-200A) FMM (400-700A) 1 .1 .01 .004 AMPERE CURRENT IN AMPERES RATING 30 10 660V Time-Current Curves FC (6-20A) 1 FE (35-100A) FM (180-350A) .1 01 04 CURRENT IN AMPERES 88 TIME IN SECONDS 100 100 120 140 160 180 200 1000 400 450 500 550 630 700 10,000 10 6 10 12 16 20 35 40 100 45 50 63 71 80 90 100 180 200 225 250 280 315 1000 350 60000 BRITISH STYLE– SEMICONDUCTOR PROTECTION FUSES AMPERE RATING 240V Time-Current Curves 30 LMT (160-450A) 10 1 .1 .01 .004 AMPERE CURRENT IN AMPERES RATING 30 10 1 240V Time-Current Curves LCT (6-20A) LET (25-180A) .1 LMMT (400-900A) .01 .004 CURRENT IN AMPERES 89 TIME IN SECONDS 200 160 200 230 315 355 400 1000 450 4000 TIME IN SECONDS 10 5 10 12 15 20 25 32 35 100 50 63 80 100 125 160 180 400 1000 500 630 710 800 900 10,000 BRITISH STYLE– INDICATORS AND ACCESSORIES Indicator System Trip-Indicators Trip-indicators are available for use in parallel with the main fuse. They can either be attached to the associated fuse or mounted separately in panel mounted fuse clips, reference CL1. A push-on adapter and microswitch attachment is available for use with the trip indicator to give the facility of remote indication, reference MAI. Fuse ratings of 20A and below cannot usually accommo- date a trip-indicator. When a trip-indicator is to be attached to the main fuse an accessory pack comprising a pair of mounting clips and an appropriate trip indicator would be required. The clips are snapped onto the fuse end caps and the indicator is pressed into clips as shown. C 6 21 B E 0.8 F 6.35 Electrical Specifications Type TI500 TI700 Maximum RMS Voltage 500 700 Maximum Peak Voltage 700 1000 Maximum DC Voltage 130 350 A 6.8 D Cold Resistance (ohms) 0.3 0.45 Maximum permissible steady-state current 1.5A 1.5A Dimensions in mm Interrupting Capacity (RMS Symm.) 100,000 100,000 2 2 Pre-Arcing I t (A S) 23 23 2 2 Total I t (max volts) (A S) 46 46 Trip-Indicator Data Ref. Dim. “A” (mm) RMS Volts Fuse Indicator Kits TI250 37.6 250 RMS For use TI500 47.5 500 Kit. Ref. Details Volts with Fuse Ref. TI600 55.7 600 EC-250 Fuse Mount 250 LET TI700 61.8 700 MC250 Indicator Kits 250 LMT & LMMT TI1100 98.4 1100 EC-600 (Inc. one indicator 660 FE, FEE, ET, & EET TI1500 120.6 1500 MC600 and two clips) 660 FM & FMM TI2000 147.5 2000 TI2500 198.3 2500 MC700 700 MT & MMT Microswitch Adapter NO MAI NC NC Edison is offering a microswitch, complete with adapter for NO securing the indicator. The microswitch is provided with double pole, single throw contacts, having both a normally open and a normally closed position. A special material has Terminal Arrangement been employed in the construction of the adapter to provide reliable operation in the range of temperatures associated with standard operating conditions and during fuse opera- tion. Microswitch and Adapter Type MAI Current Rating: AC 50/60Hz resistive load @ 250V RMS 4A AC 50/60Hz resistive load @ 127V RMS 6A DC, resistive load @ 110V DC 0.7A DC DC, resistive load @ 30V DC 2A DC Maximum Working Voltage: Contact-to-contact (RMS) 1000V Contact-to-contact (RMS) 1500V Maximum DC Volts: 110V DC Dimensions in mm 90