BUSSMANN Technical Data 4180 Effective July 2015 Supersedes November 1996 SERIES Bussmann series MJ31 and Arc limiter J ‘Type’ feeder pillar fuse links Product description Eaton’s Bussmann series range of MJ31 ‘J’ Type feeder pillar fuse links are designed to be used with wedge type fuse carriers on BS applications. These fuse links will be used by Electrical Authorities in distribution pillars, open type substation boards, heavy duty cut-outs and underground connection boxes. They can also be fitted in pole or wall mounted outdoor service fuse links. Features MJ31 • BS88-5 • gU Characteristics • Ideal for Utility applications • Excellent cable protection Also available Eaton’s Bussmann series Arc limiter fuse links • Same dimensions as MJ31 • Ultra high speed operation • Maximum arc flash reduction • Used in place of MJ fuse for safe working on live systems • Not suitable for low overload fault protection Technical Data 4180 Bussmann series MJ31 and Arc limiter J ‘Type’ feeder pillar fuse links Effective July 2015 Catalogue symbol for MJ31: • 20 to 63 A: (amp)MJ31-8 • 63 to 315 A: (amp)MJ31-7 Technical data for MJ31: • Rated voltage: 415 V a.c. • Rated current: 20 to 315 A • Breaking capacity: 80 kA • Class of operation: gU Standards/Approvals for MJ31 • ASTA certified • Tested to BS88 part 5 Packaging for MJ31: MOQ: 10 • Table 1. Technical Data for MJ31 Part number Rated voltage Rated current (Amps) 20MJ31-8 25MJ31-8 32MJ31-8 40MJ31-8 50MJ31-8 63MJ31-8 80MJ31-7 100MJ31-7 125MJ31-7 160MJ31-7 200MJ31-7 250MJ31-7 315MJ31-7 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 415 V a.c. 20 25 32 40 50 63 80 100 125 160 200 250 315 2 Watts loss Energy integrals I2t (A2S) Prearcing Total at 240 V Total at 415 V W Product Class 162 320 690 1400 2750 5600 8000 14,000 29,000 57,000 120,000 200,000 265,000 310 610 1300 2650 5200 10,500 13,500 24,500 50,000 97,000 205,000 340,000 450,000 490 970 2100 4200 8200 17,000 19,000 35,000 71,000 135,000 290,000 480,000 635,000 2.5 2.8 3.4 3.8 4.3 5 7.1 8.7 9.8 11.5 13 16 26 gU gU gU gU gU gU gU gU gU gU gU gU gU EATON www.eaton.com Bussmann series MJ31 and Arc limiter J ‘Type’ feeder pillar fuse links Technical Data 4180 Effective July 2015 Dimensions for MJ31 - mm Up to 200 A 250 and 315 A EATON www.eaton.com 3 Technical Data 4180 Effective July 2015 Bussmann series MJ31 and Arc limiter J ‘Type’ feeder pillar fuse links Time current curve for MJ31 100A 125A 160A 200A 250A 315A 20A 25A 32A 40A 50A 63A 80A 4 EATON www.eaton.com Bussmann series MJ31 and Arc limiter J ‘Type’ feeder pillar fuse links Technical Data 4180 Effective July 2015 Catalogue symbol for Arc limiter: • 92AL200 • 92AL315 Technical data for Arc limiter: • Rated voltage: 415 V a.c. • Rated current: 200 and 315 A • Breaking capacity: 80 kA • Class of operation: aR Standards/Approvals for Arc limiter: In accordance with BS88-5 • Packaging for Arc limiter: MOQ: 5 • Table 2. Technical Data for Arc limiter Watts loss Energy integrals I2t (A2S) Part number Rated voltage Rated current (Amps) Prearcing Total at 240 V Total at 415 V W Product Class 92AL200 92AL315 415 V a.c. 415 V a.c. 200 315 9800 14,100 29,000 41,500 63,000 91,000 48 54 aR aR Dimensions for Arc limiter - mm 250 and 315 A EATON www.eaton.com 5 Technical Data 4180 Bussmann series MJ31 and Arc limiter J ‘Type’ feeder pillar fuse links Effective July 2015 Time current curve for Arc limiter 10000 1000 Pre-arcing Time (s) 100 200A 315A 10 1 0.1 0.01 10 100 Prospective current (A) 1000 10000 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 EMEA Headquarters Route de la Longeraie 7 1110 Morges, Switzerland Eaton.eu © 2015 Eaton All Rights Reserved Publication No. 4180 July 2015 Eaton is a registered trademark. All other trademarks are property of their respective owners.