3120-N...-...T1-... Thermal Circuit Breaker Description The 3120-N...-...T1-... thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermobimetal. Type 3120-N...-...T1-... is ideally suited for overload protection of motors, pumps, transformers and cables. After tripping, it can reliably, easily and quickly be reset. The positively trip-free mechanism ensures reliable disconnection of the circuit even with the actuator blocked. The 3120 - N type is also available with thermal-magnetic trip. (technical data p. 21 ff.) Type 3120-N is also available as a switch in accordance IEC/EN 1 61058 (see data sheet switch 3120-N...Q1). 3120-N...-...T1-... Typical applications Your benefits l Maximum equipment availability is ensured by overload protection Medical and laboratory equipment, apparatus and machine perfectly matched with the loads (prevention of nuisance tripping) construction, professional tools, household and garden appliances, and quick resettability offices machines, audio equipment, machine tools l Reduced mounting and wiring time l Space saving design l Reduced disposition and storage costs Features l Increased overall reliability l Single or double pole thermal circuit breaker/switch combination l Voltage ratings: AC 240 V, DC 50 V (AC 415 V upon request) Further information l Current rating range: 0.1 20 A (up to 30 A upon request) l Optional: push-in terminals for easy and quick wiring with a long- The current data sheet as well as other relevant documents are term stability available on our website: www.e-t-a.de/d016 l Expandable functionality through appliance inlet module l Functional extension options with add-on modules for low voltage release, auxiliary contact function, remote trip or fast magnetic trip Approval logos Conformity 2118 www.e-t-a.de 13120-N...-...T1-... Thermal Circuit Breaker Technical data Current ratings and internal resistance values For detailed technical information please see www.e-t-a.de/ti e Current rating Internal Current rating Internal (A) resistance (A) resistance Rated voltage AC 240 V, DC 50 V per pole () per pole () (AC 415 V upon request) 0.1 94 4 0.0435 Current rating range 0.1 ... 20 A (up to 30A upon request for 1-pole 0.2 24 4.5 0.0435 devices only) 0.3 12 5 0.0325 Typical life 1-pole (EN 60934) 0.4 5.30 6 0.0215 AC 240 V: 0.1 ... 20 A 30,000 cycles at 1 x I , inductive N DC 50 V: 0.1 ... 4 A 30,000 cycles at 1 x I , inductive N 0.5 4.20 7 0.0165 4.5 ... 16 A 30,000 cycles at 1 x I , resistive N 0.6 2.90 8 0.0165 DC 28 V: 0.1 ... 20 A 30,000 cycles at 1 x I , inductive 1 N Typical life 2-pole (EN 60934) 0.8 1.50 10 < 0.02 AC 240 V: 0.1 ... 16 A 50,000 cycles at 1 x I , inductive N 1 0.9 12 < 0.02 17 ... 20 A 30,000 cycles at 1 x I , inductive N 1.2 0.80 14 < 0.02 DC 50 V: 0.1 ... 16 A 50,000 cycles at 1 x I , inductive N 17 ... 20 A 10,000 cycles at 1 x I , inductive N 1.5 0.45 15 < 0.02 Ambient temperature -30 ... 60 C 2 0.27 16 < 0.02 Insulation coordination 2.5 kV /2 reinforced insulation at 2.5 0.0785 18 < 0.02 (IEC 60664) operating area Dielectric strength 3 0.0595 20 < 0.02 Operating area Test voltage AC 3,000 V 3.5 0.0565 pole to pole (2-pole) Test voltage AC 1,500 V Insulation resistance > 100 M (DC 500 V) Rupture capacity I (IEC/EN 60934) cn I U I N N cn 1-pole, 2-pole 0.1 ... 2 A AC 240 V / 10 x I N DC 50 V 1-pole 2.5 ... 10 A DC 50 V 50 A 1-pole 2.5 ... 20 A AC 240 V / 200 A DC 28 V 2-pole 2.5 ... 20 A DC 50 V 250 A 2-pole 2.5 ... 20 A AC 240 V / 300 A DC 28 V Interrupting capacity I (UL 1077) nc I U I N N nc 1-pole, 2-pole 0.1 ... 20 A AC 250 V 5,000 A, C, 1 1-pole, 2-pole 0.1 ... 20 A DC 50 V 1,000 A, C, 1 Degree of protection (IEC 60529) Operating area IP40 Terminal area IP00 Other degrees of protection possible, depending on selected variant, see further details in data sheet. Vibration 8 g (57-500 Hz), 0.61 mm (10-57 Hz) Test to IEC 60068-2-6, Test Fc 10 frequency cycles/axis Shock 30 g (11 ms) Test to IEC 60068-2-27, Test Ea Corrosion 96 hours at 5 % salt mist, Test to IEC 60068-2-11, Test Ka Humidity 240 hours in 95 % RH Test to IEC 60068-2-78, Test Cab Mass approx. 27 g (1-pole) approx. 31 g (2-pole) approx. 42 g (2-pole with PT terminals) 2 www.e-t-a.de 2118