1 description typical applications ordering information technical data single pole, miniaturised thermal circuit breaker with trip-free mechanism and push/pull on/off manual actuation (m-type to cbe to en 60934). threadneck panel mounted, temperature-compensated, with optional auxiliary contacts. fully approved for commercial aircraft and similar requirements. various dummies are available without protective function, allowing connection of pre-installed wiring without loads. us patent number: us 6,490,141 b2 (4120-g4 moulded threadneck) extra low voltage wiring systems on all types of vehicles for land, sea and air. 4120-... type no. 4120 single pole, with temperature compensation mounting g threadneck panel mounting threadneck design 1 m12x1x6.3 (aluminium) 2 7/16-32 unx6.3 (aluminium) number of poles 1 1-pole, thermally protected hardware for threadneck 0 without hardware 1 hex nut m12x1, corrugated washer 12/15, fitted 3 hex nut m12x1 (aluminium), serrated lock washer 12.1/17.2, bulk shipped 4 hex nut 7/16-32un (aluminium), serrated lock washer 11.3/14.9, fitted terminal design (main terminals) k1 screw terminals with metric thread k14 (m4) j1 screw terminals with inch thread j14 (8-32unc-2b) j2 screw terminals with inch thread j17 (8-32unc-2b) j3 screw terminals with inch thread j25 (6-32unc-2b) p1 blade terminals 6.3x0.8, din 46244, silver-plated characteristic curve m1 thermal, 1.15 - 1.4 i n terminal screws a phillips screw m4x6, fitted b phillips screw 8-32unc-2ax6, fitted c phillips screw 6-32unc-2ax6 (ms 51957-26) k hex screw with phillips head 8-32unc-3ax7.6, fitted m hex screw with phillips head 8-32unc- 3ax7.6, bulk shipped z without terminal hardware terminal washers 0 without lock washer 1 wave washer a4, fitted 2 lock washer 4.3, fitted 4 lock washer 3.7 (ms 35338-136) 5 lock washer 4.3/9, fitted 6 lock washer 4.3/9, bulk shipped auxiliary contact s0 without auxiliary contact s1 with auxiliary contact (connector en 3155-016m2018) (nc) s5 with polarized auxiliary contact (nc) barrier z without barrier colour of the push button g green to en (e. g. 2 1/2) n black to en (e. g. 2 1/2) current ratings 1...25 a 4120 - g 1 1 1 - k1 m1 - a 1 s0 z n - 10 a ordering example voltage rating ac 115 v (300 hz to 800 hz); dc 28 v current rating range 1...25 a (0.5 a upon request) auxiliary circuit 1 a, dc 28 v (0.5 a upon request) typical life 20,000 operations mechanical, or 5,000 operations at 1 x i n ambient temperature -55c ...+125c (-67...+257 f) insulation co-ordination rated impulse pollution (iec 60664 and 60664a) withstand voltage degree 1.5 kv 3 dielectric strength (iec 60664 and 60664a) test voltage operating area ac 1,500 v main to aux. circuit ac 1,500 v insulation resistance > 100 m (dc 500 v) interrupting capacity i cn ac 115 v (400 hz): 1...4 a 1,000 a 5...25 a 2,000 a dc 28 v: 1...25 a 6,000 a degree of protection operating area ip40 (iec 60529/din 40050) terminal area ip00 vibration 10 g (57-2000 hz), 0.76 mm (5-57 hz) (sinusoidal) to iso 7137, en 2350 para. 5.3.1 vibration 1...2.5 a: 0.04 g 2 /hz 1,5 db; 7.3 g eff 3...20 a: 0.06 g 2 /hz 1,5 db; 9 g eff to iso 7137, en 2350 para. 5.3.1 acceleration 17 g, to iso 2669, en 2350 para. 5.3.3 shock 50 g (11 ms), to iso 7137, en 2350 para. 5.3.2 corrosion 48 hours at 5 % salt mist to iso 7137, en 2350 para. 5.4.2 humidity 240 hours at 95 % rh, to iso 7137, en 2350 para. 5.4.3 explosion to vg 95210, sheet 10 altitude 22,000 m above sea level mass approx. 20.6 g with terminal screws, without -si approx. 24.6 g with terminal screws, with -si preferred types standard current ratings (a) 1 2 3 5 7.5 10 15 20 25 4120-g214-j1m1-b2s0zn (ms3320) x x x x x x x x x 4120-G111-K1M1-a1s0zn (en 2495/vg93345 t06) x x x x x x x x x preferred types high performance thermal circuit breaker 4120-... www.e-t-a. de 1646 1
2 dimensions 4120-g1.. 4120-g11.-j2m1-k5s0zn (en2495-?u, en3773-004 d?) 4120-G111-K1M1-a1s0zn (en2495-?m) (vg95345 t06) 4 4 1 1 4120-g112-j2m1-k5s1zg - 4120-g112-j2m1-k5s5zg 4 1 1 11 1 6 1 1 4 1 1 1 11 11 1 1 4 41 1 4 6 16 4 6 1 1 m12x1 18.5 off 6.35 1.5 31 12.8 45 45 max. 2 tightening torque max. 5 nm 1 2 2.5 min. 4.6 ?10 ?8.4 3.5 black white lock washer 8.5 5 type no. terminals: 1 - input 2 - output terminal screw iso 7045-m4x6 with lock washer din 137-b4 tightening torque max. 1.7 nm .098 .250 .512 .728 .059 1.22 min .181 max .079 .504 .138 .331 .394 .197 .335 on 14.2 9.5 2 0.8 19.5 location pin 5 current rating in a .031 .374 .559 .768 .079 sw14 .551 terminal screw h8-32unc-3ax7.6 to fed-std-h28/2a with lock washer tightening torque max. 1.7 nm type no. black 45 13 1.5 18 1 2 m12x1 18.5 off 6.35 31 45 max. 3 tightening torque max. 5 nm 2.5 min. 4.6 ?10 ?8.4 3.5 white serrated lock washer 10.5 .098 .250 .512 .728 .059 1.22 min .181 max .118 .709 .138 .331 .394 .413 on sw14 14.2 19.5 5 9.5 2 0.8 location pin current rating in a .031 .374 .559 .768 .079 .551 14.2 aux. contact (connector to en 3155-016 m2018) sw14 19.5 9.5 0.8 location pin current rating in a .031 .374 .559 .768 .55 1 2 5 max. 6.5 .079 max .256 terminal screw h8-32unc-3ax7.6 to fed-std-h28/2a with lock washer tightening torque max. 1.7 nm .413 terminals: 1 - input 2 - output terminals: 1 - input 2 - output approvals (configurations) standard current ratings and typical volt drop values this is a metric design and millimeter dimensions take precedence ( mm ) inch dimensions 4120-... min. 11.9 on 7/16-32-un-2a thd max. 19 off 6.35 1.5 31 12.8 4 5 45 max. 1.5 tightening torque max. 5 nm 1 2 2.5 min. 4.6 ?10 ?8.4 3.5 black white serrated lock washer 8.5 5 type no. terminals: 1 - input 2 - output terminal screw ms 51957-41 (8-32 unc-2a) with lock washer ms 35338-137 tightening torque max. 1.7 nm 4120-g214-j1m1-b2s0zn (ms 3320) .098 .250 min .469 max .748 .059 1.22 min .181 max .059 .504 .138 .331 .394 .197 .335 9.5 2 14.2 0.8 19.5 location pin 5 current rating in a .031 .374 .559 .768 .079 current rating (a) volt drop (mv) current rating (a) volt drop (mv) 1 1100 7.5 250 2 550 10 230 2.5 460 15 200 3 440 20 190 4 380 25 190 5 260 authority standard voltage ratings current ratings ul ul 1077 dc 50 v 0.5 a25 a bw vg 95345, part 6 ac 115 v, 400 hz dc 28 v 1 a25 a 1 a25 a bw en 2495-u / -m ac 115 v, 400 hz dc 28 v 1 a25 a 1 a25 a bw ln 29887 ac 115 v, 400 hz dc 28 v 5 a25 a 5 a25 a bw en 3773-004 ac 115 v, 400 hz dc 28 v 1 a25 a 1 a25 a dep. of the navy ms 3320 ac 115 v, 400 hz dc 28 v 1 a20 a 1 a20 a airbus en 2995-004 ac 115 v, 400 hz dc 28 v 1 a25 a 1 a25 a airbus en 2995-005 ac 115 v, 400 hz dc 28 v 1 a25 a 1 a25 a high performance thermal circuit breaker 4120-... www.e-t-a. de 1646 1
3 ? times rated current trip time in seconds 12 46 8 10 20 40 10000 1000 100 10 1 0. 1 0.01 0.001 60 80 100 +125 c +257 f +23 c +73.4 f -55 c -67 f typical time/current characteristics internal connection diagram 2 line 1 2 line 1 4 3 2 line 1 5 3 ith auiliar contact en 2995-004 ith olarie auiliar contact en 2995-005 2 line 1 12 11 ith auiliar contact vg 95345 t06 this is a metric design and millimeter dimensions take precedence ( mm ) inch mounting holes mounting holes s0 mounting holes s1 or s5 ?3.2 +0.15 9.5 0.2 ?12.5 +0.2 .492 +.008 min. 25 * 9.6 0.1 min. 40 .378 .004 min. 1.57 * min. 25 mm / .984 in. when fitted with splash cover min .984 * min. 20 min .787 ?3.5 +0.1 .138 .004 min. 30 9.5 0.2 .374 .008 min. 1.18 thickness 1.5 - 3 mm .059 - .118 in. ?12.5 +0.2 .492 +.008 min. 25 * min .984 * min. 20 min .787 ?3 +0.1 .118 .004 ?11.5 +0.2 thickness: 1.5 - 3 mm .059 - .118 in. .453 +.008 .374 .008 .126 +.006 4120-g2... ?3.2 +0.15 9.5 0.2 ?12.5 +0.2 .492 +.008 .374 .008 .126 +.006 4120-g1... thickness 1.5 - 3 mm .059 - .118 in. thickness: 1.5 - 3 mm .059 - .118 in. other terminal designs a 45 8.5 terminal design -j3 terminal design -j2 terminal distances to: ms 14 105 (a, b) ms 14 153 (a, b) ms 22 073 (a) ms 22 074 (a) ms 25 244 (a) ms 25 373 (a, b) 45 a 45 10.5 terminal distances to: ms 26 574 (a, b) b b (31 mm/1.22 in.) .413 (18 mm/.709 in.) (15 mm/.591 in.) (35.5 mm/1.40) .335 13 36 6.3 terminal design -p1 .512 1.42 .248 high performance thermal circuit breaker 4120-... www.e-t-a. de 1646 1 high performance thermal circuit breaker 4120-...
4 accessories (approved to vg 95 345, part 23) a ctuator extension x 200 803 01 splash cover/hex nut assembly with o ring 66 6 x 200 801 08 nickel plated nut, transparent cover x 200 801 03 matt black finish nut, black cover x 200 801 09 matt black finish nut 7/16-32, black cover 11 1 16 1 1 66 x 200 801 12 with blackened nut and transparent cover accessories identification collar to be snapped on the push button y 307 004 01 black y 307 004 02 white y 307 004 03 red y 307 004 04 green y 307 004 05 blue lock out ring to block the push button in off position y 307 005 01 red y 307 005 02 black 6.4 ?6.85 ?12.35 ?14 .270 .551 .486 .252 0.65 .026 0.8 .031 7.7 ?10.9 ?14.6 .575 .303 .429 this is a metric design and millimeter dimensions take precedence ( mm ) inch all dimensions without tolerances are for reference only. in the interest of improved design, performance and cost effectiveness the right to make changes in these specifications without notice is reserved.product markings may not be exactly as the ordering codes. errors and omissions excepted. high performance thermal circuit breaker 4120-... www.e-t-a. de 1646 1
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