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6CT
FUSEHOLDERS
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- Manufacturer: EATON / PARTNER STOCK
- Product type: Fuse Holders
- SVHC: No SVHC (25-Jun-2025)
| Delivery and price | |
|---|---|
| Units per pack | 6 |
| Price | 53.17 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
Technical Data **720024** **BUSSMANN** Effective May 2019Supersedes January 2019 SERIES ## CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses ## Catalogue symbol - (amps)CT (6 to 20 A) - (amps)ET (25 to 80 A) - (amps)FE (35 to 100 A) - (amps)EET (90 to 160 A) - • (amps)FEE (100 to 200 A) • (amps)FM (180 to 350 A) • (amps)FMM (400 to 700 A) • (amps)MT (160 to 355 A) - (amps)MMT (180 to 710 A) ## Description BS88 style high speed fuse links. ## Technical data - Rated voltage |Rated voltage|Rated voltage|||||| |---|---|---|---|---|---|---| |Catalogue||IEC|||UL|| |numbers|V a.c.||V d.c.|V a.c.||V d.c.| |CT,|690||500|700||500| |ET|690||500|700||500| |FE|690||500|700||500| |EET|690||500|700||500| |FEE|690||500|700||500| |FM|690||450|700||500| |FMM<br>MT|690<br>690||450<br>350|700<br>700||-<br>-| |MMT|690||350|700||-| - Rated current - Breaking capacity |Catalogue<br>numbers<br>CT|RMS<br>Sym<br>90 kA|IEC<br>DC at<br>rated<br>voltage<br>40 kA at<br>500 V d.c.|RMS<br>Sym<br>200 kA|UL<br>DC at<br>rated<br>voltage<br>50 kA at<br>500 V d.c.| |---|---|---|---|---| |ET|200 kA|50 kA at|200 kA|50 kA at| |FE||500 V d.c.||500 V d.c.| |EET||||| |FEE<br>FM|200 kA|40 kA at|200 kA|50 kA at| |FMM|200 kA|450 V d.c.<br>40 kA at|200 kA|500 V d.c.<br>-| |||450 V d.c.||| |MT<br>MMT|200 kA<br>200 kA|40 kA at<br>350 V d.c.|200 kA<br>200 kA|-<br>-| ## Agency information - CE - Designed and tested to BS88 part 4 - IEC 60269 Part 4 - Consult fusetech@eaton.com for specific UL recognition status - CCC for ET, FE, EET, FEE, FM and FMM ## Features and benefits - Excellent cycling capability and DC performance - Low arc voltage and low energy let-through (I[2] t) - Low watts loss - 6 - 710 A - Operating class: aR ## Typical applications - DC common bus - DC drives - Power converters/rectifiers - Reduced voltage starters CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Carton quantity - LCT and CT: 20 per carton - LET, ET and FE: 10 per carton - EET, FEE: 5 per carton - LMT, LMMT, FM, FMM, MT and MMT: 1 per carton ## Carton weight - LCT: 0.11 kg - LET: 0.31 kg - LMT: 0.18 kg - LMMT: 0.37 kg - CT: 0.16 kg - ET and FE: 0.42 kg - EET, FEE and FMM: 0.45 kg - FM: 0.24 kg - MT: 0.26 kg - MMT: 0.47 kg ## Catalogue numbers **==> picture [103 x 379] intentionally omitted <==** **----- Start of picture text -----**<br> 6CT 180FM<br>10CT 200FM<br>12CT 225FM<br>16CT 250FM<br>20CT 280FM<br>25ET 315FM<br>32ET 350FM<br>35ET 400FMM<br>40ET 450FMM<br>45ET 500FMM<br>56ET 550FMM<br>63ET 630FMM<br>80ET 700FMM<br>35FE 160MT<br>40FE 180MT<br>45FE 200MT<br>50FE 250MT<br>63FE 280MT<br>71FE 315MT<br>80FE 355MT<br>90FE 180MMT<br>100FE 200MMT<br>90EET 225MMT<br>110EET 280MMT<br>140EET 315MMT<br>160EET 355MMT<br>100FEE 400MMT<br>120FEE 450MMT<br>140FEE 500MMT<br>160FEE 560MMT<br>180FEE 630MMT<br>200FEE 710MMT<br>**----- End of picture text -----**<br> ## Electrical characteristics ## **Total clearing I[2] t** The total clearing I[2] t at rated voltage and at a power factor of 15 percent are given in the electrical characteristics. For other voltages, the clearing I[2] t is found by multiplying by correction factor, K, given as a function of applied working voltage, Eg, (RMS). **==> picture [123 x 136] intentionally omitted <==** **----- Start of picture text -----**<br> 1.6<br>K<br>1.4<br>1.2<br>1.0<br>0.8<br>0.6<br>0.4<br>1)<br>2)<br>0.2<br>E<br>g<br>200 300 400 500 600 660<br>1) CT, ET, EET, FE, FEE, MT, MMT<br>**----- End of picture text -----**<br> 2) FM, FMM ## **Arc voltage** This curve gives the peak arc voltage, UL, which may appear across the fuse during its operation as a function of the applied working voltage, Eg, (RMS) at a power factor of 15 percent. **==> picture [129 x 118] intentionally omitted <==** **----- Start of picture text -----**<br> UL<br>1500<br>1)<br>1000<br>2)<br>500<br>E<br>g<br>200 400 600 660<br>**----- End of picture text -----**<br> 1) CT - 2) ET, FE, EET, FEE, FM, FMM ## **Watts losses** Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the watts losses at load currents lower than the rated current. The correction factor, Kgiven as a function of the RMS load current, Ib , in percent of the p , is rated current. **==> picture [129 x 117] intentionally omitted <==** **----- Start of picture text -----**<br> 1.0<br>Kp<br>0.8<br>0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>0.1 Ib<br>30 40 50 60 70 80 90 100%<br>**----- End of picture text -----**<br> 2 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Technical data - CT, ET, FE, EET, FEE **==> picture [328 x 408] intentionally omitted <==** **----- Start of picture text -----**<br> Rated I [2] t (A [2] Sec)<br>Rated current<br>Catalogue voltage RMS- Clearing Clearing Watts<br>numbers V a.c. / V d.c. Amps Pre-arc at 415 V at 660 V loss**<br>6CT 690 V a.c. / 500 V d.c. (IEC) 6 1.8 8.5 12 2<br>10CT 10 7 30 48 3<br>700 V a.c. / 500 V d.c. (UL)<br>12CT 12 10 40 65 3<br>16CT 16 16 66 110 7<br>20CT 20 32 150 220 7<br>25ET 690 V a.c. / 500 V d.c. (IEC) 25 25 150 250 7<br>32ET 32 32 190 350 11<br>700 V a.c. / 500 V d.c. (UL)<br>35ET 35 52 310 500 11<br>40ET 40 103 600 900 9<br>45ET 45 103 680 1100 11<br>56ET 56 135 950 1500 14<br>63ET 63 171 1200 2000 16<br>80ET 80 360 2500 4000 18<br>35FE 690 V a.c. / 500 V d.c. (IEC) 35 33 130 200 9<br>40FE 40 52 180 300 9<br>700 V a.c. / 500 V d.c. (UL)<br>45FE 45 76 270 450 11<br>50FE 50 103 380 600 11<br>63FE 63 135 480 750 18.5<br>71FE 71 210 600 950 17<br>80FE 80 250 900 1500 20<br>90FE 90 360 1300 2100 20<br>100FE 100 470 1800 2800 23<br>90EET 690 V a.c. / 500 V d.c. (IEC) 90 490 3000 4500 19<br>110EET 110 600 4000 6500 27<br>700 V a.c. / 500 V d.c. (UL)<br>140EET 140 1050 7000 12,000 35<br>160EET 160 1500 10,000 17,000 39<br>100FEE 690 V a.c. / 500 V d.c. (IEC) 100 400 1600 2400 24<br>120FEE 120 540 1900 3100 32<br>700 V a.c. / 500 V d.c. (UL)<br>140FEE 140 850 2500 3800 36<br>160FEE 160 1000 3700 5700 46<br>180FEE 180 1400 5300 8400 46<br>200FEE 200 1900 7100 11,400 52<br>**----- End of picture text -----**<br> **Watts loss provided at rated current 3 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Technical data - FM, FMM, MT and MMT **==> picture [322 x 406] intentionally omitted <==** **----- Start of picture text -----**<br> Rated I [2] t (A [2] Sec)<br>Rated current<br>Catalogue voltage RMS- Clearing Clearing Watts<br>numbers V a.c. / V d.c. Amps Pre-arc at 415 V at 660 V loss**<br>180FM 690 V a.c. / 450 V d.c. (IEC) 180 1400 7500 13,500 40<br>200FM 200 2600 10,500 18,500 40<br>700 V a.c. / 500 V d.c. (UL)<br>225FM 225 3700 14,500 26,500 44<br>250FM 250 5200 20,500 37,500 48<br>280FM 280 7000 30,500 55,000 48<br>315FM 315 10,000 40,000 77,000 55<br>350FM 350 15,000 60,000 105,000 55<br>400FMM 690 V a.c. / 450 V d.c. (IEC) 400 10,000 40,000 72,500 85<br>450FMM 450 15,000 60,000 105,000 90<br>700 V a.c. (UL)<br>500FMM 500 20,000 82,000 150,000 100<br>550FMM 550 30,000 120,000 215,000 100<br>630FMM 630 45,000 180,000 310,000 100<br>700FMM 700 60,000 245,000 420,000 120<br>160MT 690 V a.c. / 350 V d.c. (IEC) 160 2400 15,000 25,000 26<br>180MT 180 3800 25,000 38,000 26<br>700 V a.c. (UL)<br>200MT 200 6000 40,000 58,000 27<br>250MT 250 11,500 80,000 110,000 32<br>280MT 280 16,500 100,000 150,000 35<br>315MT 315 19,000 125,000 180,000 42<br>355MT 355 22,000 160,000 200,000 51<br>180MMT 690 V a.c. / 350 V d.c. (IEC) 180 1650 12,000 18,000 42<br>200MMT 200 2200 16,000 23,000 42<br>700 V a.c. (UL)<br>225MMT 225 3700 26,000 40,000 42<br>280MMT 280 6600 47,000 70,000 47<br>315MMT 315 8600 62,000 91,000 51<br>355MMT 355 13,500 97,000 140,000 54<br>400MMT 400 21,000 150,000 220,000 60<br>450MMT 450 30,000 220,000 320,000 57<br>500MMT 500 42,000 300,000 450,000 64<br>560MMT 560 60,000 430,000 640,000 64<br>630MMT 630 68,500 500,000 720,000 86<br>710MMT 710 78,000 600,000 850,000 105<br>**----- End of picture text -----**<br> **Watts loss provided at rated current 4 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Dimensions - mm **==> picture [120 x 207] intentionally omitted <==** **----- Start of picture text -----**<br> CT<br>4<br>5.5<br>54.8 64.3 74.6<br>ci<br>6.4<br>8.7 ro 8.7<br>Indicator (optional)<br>**----- End of picture text -----**<br> **==> picture [66 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> ET, FE up to 63 A<br>**----- End of picture text -----**<br> **Indicator (optional)** ET, FE up to 63 A EET, FEE **==> picture [13 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> 8.7<br>**----- End of picture text -----**<br> **Indicator (optional)** **==> picture [118 x 154] intentionally omitted <==** **----- Start of picture text -----**<br> 46 70 94<br>11.9<br>il<br>31.8<br>3 7<br>19<br>“ Coy<br>Indicator (optional)<br>**----- End of picture text -----**<br> FMM, MMT **==> picture [398 x 181] intentionally omitted <==** **----- Start of picture text -----**<br> FM, MT FMM, MMT<br>25.4 25.4<br>50 A 113<br>50 A 113<br>i = ‘A’<br>14 Type Dimensions<br>13.5 10.3 FM 80-85<br>=i —<br>10.3 FMM 80-85<br>> oG ) MT 85<br>83<br>41 MMT 85<br>@. 3 8. 1 |7 OO—<br>38 Dimension in mm<br>Indicator (optional) Indicator (optional) 1 mm = 0.0394” 1”= 25.4 mm<br>**----- End of picture text -----**<br> **==> picture [69 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> Indicator (optional)<br>**----- End of picture text -----**<br> 5 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Cut-off curves CT, ET, EET, MT and MMT **==> picture [6 x 74] intentionally omitted <==** **----- Start of picture text -----**<br> Cut-off current (Amps peak)<br>**----- End of picture text -----**<br> Prospective current (SYM R.M.S. Amps) FE, FM Prospective current (SYM R.M.S. Amps) 6 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Cut-off curves FEE and FMM **==> picture [7 x 74] intentionally omitted <==** **----- Start of picture text -----**<br> Cut-off current (amps peak)<br>**----- End of picture text -----**<br> **==> picture [109 x 6] intentionally omitted <==** **----- Start of picture text -----**<br> Prospective current (SYM. R.M.S. Amps)<br>**----- End of picture text -----**<br> 7 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Time-current curves ## CT, ET Prospective current in amperes r.m.s. FE, FM 8 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Time-current curve - nominal melt ## EET, MT Prospective current in amperes r.m.s. ## FEE, FMM Prospective current in amperes r.m.s. 9 EATON www.eaton.com CT, ET, FE, EET, FEE, FM, FMM, MT, MMT BS88 High speed fuses Technical Data 720024 Effective May 2019 ## Time-current curve - nominal melt ## MMT **==> picture [6 x 55] intentionally omitted <==** **----- Start of picture text -----**<br> Virtual pre-arcing time<br>**----- End of picture text -----**<br> Prospective current in amperes r.m.s. **Eaton** EMEA Headquarters Route de la Longeraie 7 1110 Morges, Switzerland Changes to the products, to the information contained in this document, and to prices are reserved; so are errors and omissions. Only order confirmations and technical documentation by Eaton is binding. Photos and pictures also do not warrant a specific layout or functionality. Their use in whatever form is subject to prior approval by Eaton. The same applies to Trademarks (especially Eaton, Moeller, and Cutler-Hammer). The Terms and Conditions of Eaton apply, as referenced on Eaton Internet pages and Eaton order confirmations. Eaton Electrical Products Limited Melton Road Burton-on-the-Wolds Leicestershire, LE12 5TH United Kingdom **==> picture [98 x 32] intentionally omitted <==** © 2019 Eaton All Rights Reserved PDF Only Publication No. 720024 May 2019 Eaton is a registered trademark. All other trademarks are property of their respective owners.
Updated at June 9, 2026
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