LJT 21-48 - E117/C 4/03/03 17:11 Page 2 LJT 21-48 DESCRIPTION * Lightweight space saving design * Corrosion resistance: olive drab cadmium-plate aluminium or electroless nickel * 100% scoop-proof for complete contact protection * Keying: achieved by different key / keyway locations * Quick positive coupling: * Durability: 500 cycles * Insulation resistance at ambient under 500 Vdc > 5000 Mohms * 4 size 8 contacts * Range temperature: - 65C to + 175C * Contact rating: Available in TV-CTV (Mil-DTL-38999 Series III) version. Current capability 60 A * Service rating M: New hard piggy back grommet for easy installation. * Operating voltage at sea level: 400 Vrms * Test voltage unmated - at sea level : 1300 Vrms - at 15000 m / 50000 ft : 550 Vrms - at 21000 m / 70000 ft : 350 Vrms - at 34000 m / 110000 ft : 200 Vrms * Test voltage mated, please consult us. APPLICATIONS High performance for power supply Hard piggy back grommet for size 8 cavity and power cable: ref.: 900471. E117/C This arrangement was originally developped for military applications. Due to the rigidity of the cables used, the front male insulator has been reinforced to maintain a perfect alignment of contacts during mating. A header is placed in the backshell to guide each wire and to guarantee tightness even when cables are bent. Available in Mil-DTL-38999 series III standard. 3 point bayonet locking system Contact The Amphenol Socapex power connector LJT 21-48 provides 4 size 8 power contacts in a LJT 21 shell in accordance with the MIL-DTL-38999 Series I standard. Crimp barrel Cable sizes Size Contact diameter mm Diameter mm Depth mm Gauge AWG Section mm Outside diameter mm 8 3.6 4.6 10 8 8.98 to 10 4.5/5.8 * Power supplies * Shelters * Firing posts LJT 21-48 CHARACTERISTICS 4x60 Amps circular power connector 4/03/03 17:11 Page 3 Dimensional characteristics * Square flange receptacle A = 33.83 mm B = 15.29 mm C = 31.75 mm E = 39.67 mm F = 3.25 mm G = 1.1875 - 18 2 A UNEF * Jam nut receptacle A= B= C= E= F= G= a= 33.83 mm 1.5000 - 18 UNEF inches 43.00 mm 49.23 mm 52.65 mm 1.1875 - 18 2 A UNEF 8.33 mm Max without protrusion of the piggy back grommet. * Plug G = 1.1875 - 18 2 A UNEF C = 41.28 mm a = 31 mm Max without protrusion of the piggy back grommet. * Position of major key way A = 80 B = 69 C = 121 D = 110 Receptacle: front face shown * Panel drilling for square flange and jam nut receptacle Square flange receptacle front panel mounting R Jam nut receptacle back panel mounting OE 4OW F OD DIMENSIONAL CHARACTERISTICS LJT 21-48 - E117/C G V Shell Size R (mm) V +0 -0.25 (mm) W +0 -0.25 (mm) G Mini (mm) E Mini (mm) F +0 -0.25 (mm) D +0 -0.25 Mini (mm) 21 31.75 42.5 3.25 50.60 38.28 37.06 32.16 Panel thickness for jam nut receptacle : 1.6 mm mini 3.2 mm maxi 4/03/03 17:11 Page 4 Insert arrangement 21-48 particularities * Side half-view of female plug/receptacle * Side half-view of male plug/receptacle INSERT ARRANGEMENT 21-48 PARTICULARITIES LJT 21-48 - E117/C * Insert arrangement: front face shown LJT 21-48 Male plug Female receptacle HOW TO ORDER LJT 21-48 - E117/C 4/03/03 17:10 Page 1 Connectors Proprietary P/N Series LJT 00 RT 21 48 P A 014 Shell type: 00: square flange receptacle 01: in-line receptacle 07: jam nut receptacle 06: plug Connector class: RT: for environmental applications (supplied without rear accessories). Design provides serrations on rear threads of shells. 21: shell size P: pin S: socket Polarization, rotation of major keyway: None = normal A, B, C, D. Shell finish : 014: olive drab cadmium 023: electroless nickel (Connector supplied with 4 contacts and 4 piggy back grommets 900471) For additional information, please see our LJT catalog. Contacts Male contact: 900198 Female contact: 900217 Reducing sleeve for AWG10: 900154 Piggy Back grommet: 900471 Numerous piggy back grommets are available depending to cable diameters. Please consult us. Backshells This connector is compatible with all backshells available for LJT connectors (MIL-DTL-38999 Series I / HE 308): LJT NSA = HE308-13 / LJT NSB / LJT NSD = HE308-14 / LJT SAD / LJT SAC HE308-35 band backshell (BAND-IT System). Tooling Crimping plier: 809872 Controlling gauge: 809877 Positioner: 809873 Metallic removal tool: 809845 Do not hesitate to contact us for further information A mphenol Amphenol Socapex Mil/Aero & Industrial Business Unit 948, Promenade de l'Arve - BP 29 F - 74311 Thyez Cedex Tel.: +33 (0) 4 50 89 28 00 - Fax: +33 (0) 4 50 96 19 41 http://www.amphenol.com Sales office in Paris Tel.: +33 (0) 1 49 05 30 00 - Fax: +33 (0) 1 49 05 30 43 E117/C Contact type: The information given in this document is as a guideline only. We reserve the right to modify our products in any way we deem necessary. Any duplication is prohibited, unless approved in writing. 48: insert arrangement (4 size 8 contacts)