4120
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Description 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. Extra low voltage wiring systems on all types of vehicles for land, sea and air. Technical data Type No._ 4120 single pole, with temperature compensation 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 In 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 For further details please see: www.e-t-a.de/ti_e Voltage rating AC 115 V (300 Hz to 800 Hz); DC 28 V Current rating range 1...25 A Typical life 20,000 operations mechanical, or 5,000 operations at 1 x IN Ambient temperature -55°C ...+125°C (-67...+257 °F) Insulation co-ordination rated impulse pollution (IEC 60664 and 60664A) withstand voltage degree Dielectric strength (IEC 60664 and 60664A) test voltage main to aux. circuit AC 1,500 V Insulation resistance > 100 MQ (DC 500 V) Interrupting capacity Icn AC 115 V (400 Hz): 1...4 A 1,000 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) 3...20 A: 0.06 g2/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 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 4120 - G 1 1 1 - K1 M1 - A 1 S0 Z N - 10 A ordering example Please be informed that we have minimum ordering quantities to be observed. Preferred types

Standard current ratings and typical volt drop values Approvals (configurations) Authority black white BB serrated lock washer This is a metric design and millimeter dimensions take precedence ( mm )

High Performance Thermal Circuit Breaker 4120-... Mounting holes 4120-G2... with auxiliary contact VG 95345 T06 with auxiliary contact EN 2995-004 with polarized auxiliary contact EN 2995-005 thickness 1.5 - 3 mm .059 - .118 in. * min. 25 mm / .984 in. when fitted with splash cover Internal connection diagram Typical time/current characteristics Other terminal designs 10000 Trip time in seconds Mounting instructions The devices must not be aligned in tightened state! There is a risk of permanent damage at the circuit mechanics and the housing may break! The devices must be countered during...

High Performance Thermal Circuit Breaker 4120-...Accessories (approved to VG 95 345, part 23) Splash cover/hex nut assembly with O ring (IP66 and IP67) 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 X 200 801 12 with blackened nut and transparent cover Accessories Identification collar to be snapped on the push button Lock out ring to block the push button in OFF position Y 307 005 01 red Y 307 005 02 black This is a metric design and millimeter dimensions take precedence ( ) All...