Datasheet

ManualsBrandsETA ManualsAppliance Circuit BreakerThermal Circuit Breaker, 2-Pole, Panel Mount, 15A, IP00/IP65

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3120-N... Thermal Circuit Breaker

1846

Description

The 3120 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 thermal bimetal. Type 3120 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.

Versions upon request:

l ON/OFF switch without overcurrent protection according to the

relevant standard for switches for appliances IEC/EN 61058

l thermal-magnetic version for an additional short circuit protection

3120-N

Features Your benefits

l Single or double pole thermal circuit breaker/switch combination

l Voltage ratings: AC 240 V, DC 50 V

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-term stability

l Functional extension options with add-on modules for low voltage

release, auxiliary contact function or remote trip

l Maximum equipment availability is ensured by overload protection

perfectly matched with the loads (prevention of nuisance tripping)

and quick resettability

l Reduced mounting and wiring time

l Spacesaving design

l Reduced disposition and storage costs

l Increased overall reliability

Further information

Approval logos

Compliances

The current data sheet is available on our website: www.e-t-a.de/d016

Typical applications

Medical and laboratory equipment, apparatus and machine

construction, professional tools, household and garden appliances,

offices machines, audio equipment, machine tools

Summary of content (11 pages)

PAGE 1
3120-N... Thermal Circuit Breaker Description The 3120 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 thermal bimetal. Type 3120 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.
PAGE 2
3120-N... Thermal Circuit Breaker Technical data Current ratings and internal resistance values For detailed technical information please see www.e-t-a.de/ti_e Voltage ratings AC 240 V, DC 50 V (AC 415 V upon request) 0.1 ... 20 A (up to 30A upon request for single pole units) Current rating range Typical life 1-pole 1 AC 240 V: 0.1...20 A DC 50 V: 0.1...4 A 4.5...16 A DC 28 V: 0.1...
PAGE 3
120-N... Thermal Circuit Breaker Mounting method 3120-N5 2 4 - PT T1-W 19 D G 4 - 16 A Mounting style Cut-out for mounting style -N3.4 Cut-out for mounting style -N5.4 -0.2 -0.4 -0.2 -0.4 ±0.05 1-3.5 +1 min. 55 22+0.3 1-5 Type No. 3120 thermal rocker-actuated circuit breaker Mounting method N3 snap-in, mounting cut-out 50.5 x 21.5 mm N5 snap-in, mounting cut-out 44.
PAGE 4
3120-N... Thermal Circuit Breaker Approvals Time/current characteristics Standard Voltage ratings Current rating range VDE IEC/EN 60934 AC 240 V DC 50 V DC 50 V DC 28 V AC 250 V 0.1 A … 20 A 0.1 ... 20A (2-pole) 0.1 ... 16 A (1-pole) 0.1 A … 20 A 0.1 A ... 16 A (TC1, OL1) 17 A … 20 A (TC1, OL0) 0.1 A … 20 A (TC1, OL0) 30 A* (TC1, OL0) 0.1 A ... 16 A (TC1, OL1) 17 A … 20 A (TC1, OL0) 0.1 A … 20 A (TC1, OL0) 30 A* (TC1, OL0) 0.1 A…20 A 0.1 A…20 A UL UL 1077 AC 250 V 1 DC 50 V AC 250 V CSA C22.
PAGE 5
3120-N... Thermal Circuit Breaker Dimensions 3120-N3.4-G7... 12.65 3120-N3.4-PT... 12.65 5.5 16 10.7 59 ± 1 29 ± 1 29 ± 1 2.8 1 10 16 32.3 59 ± 1 3.5 3 47.3 10.7 15.5 21 41 blade terminal 6.3 x 0.8 flat head screw M3.5x6 tightening torque max. 0.8 Nm 21 42.5 3120-N5.4-PT... 3120-N5.4-G7... 29 ± 1 12.65 12.65 5.5 16 10.7 55 ± 1 21 3.5 2.8 47.3 10 10.7 55 ± 1 16 32.3 29 ± 1 3 15.5 41 blade terminal 6.3 x 0.8 flat head screw M3.5x6 tightening torque max. 0.
PAGE 6
3120-N... Thermal Circuit Breaker Cable cross sections PT terminals Cable cross section with direct push-in wiring Rigid 1…4 mm2 (stripping length: 10 mm) 2-pole switching and 2-pole protected 2-pole switching and 1-pole protected 3120-N524-PT 3120-N554-PT 3120-N524-P7 3120-N554-P7 3120-N524-H7 3120-N554-H7 3120-N524-N7 3120-N554-N7 3120-N524-G7 3120-N554-G7 mm2 Flexible with wire end ferrule (with or without plastic sleeve) 0.5…2.
PAGE 7
3120-N... Thermal Circuit Breaker Accessories Rear terminal shroud, black (IP64) Y 304 275 01 Insulated cover Y 303 068 01 2.5 40.5 +0.5 1.75 -0.25 50 1 70+5 20 0.9 9 20.5 10 Terminal adapter Y 303 862 01 13.5 3.7 R3 .5 ø8 4 4 blade terminals 6.3 x 0.8 16.5 41 21 28 22.5 52 44.5 22 58 50.5 * sharp-edged without bends 28 Spacer for 3120-N5... Y 303 676 01 2.5 Spacer for 3120-N3... Y 303 675 01/02 36 25 31 33 54 0.
PAGE 8
3120-N... Thermal Circuit Breaker Accessories Plug-in connector Y 31214001 Connecting cables can be pre-wired. Two retaining clips ensure a tight fit. 1 12 24 4,5 5,5 42 21,2 Benefits: • Reduced installation time and costs for final assembly • Quick replacement of devices Note: Delivery without receptacles. Dimensions of receptacles (width 6.3 mm) are in accordance with DIN 46340 part 3, shape A. Examples of suitable receptacles: Stocko RSB 7916 F6,3-1 / Klaucke type 2730 / Vogt type 3832d.
PAGE 9
3120-N... Thermal Circuit Breaker Description X3120-U undervoltage release module Dimensions The undervoltage release module reliably excludes personal injury through automatic re-start after voltage dip or power failure. 15 ° 6.6 .260 Typical applications 21 .827 22 .866 23.5 .925 All machines that could cause personal injury upon automatic re-start, e.g. drilling machines, electric saws, meat cutting machines etc. Order numbering code 21 .
PAGE 10
3120-N... Thermal Circuit Breaker Description X3120-S auxiliary contact module Dimensions Add-on module for circuit breaker type 3120-F. The auxiliary contact module has a change-over contact as signal contact and is operated with actuation of the CBE. 25.5 1.00 Note: Not possible in combination with PT terminals. Typical applications Status monitoring of CBE and/or the connected loads. blade terminals DIN 46244-A2.8-0.5-Ms (QC .110) plated Order numbering code Type No.
PAGE 11
3120-N... Thermal Circuit Breaker Description X3120-M remote trip module Dimensions A module which adds remote trip capability to all versions of type 3120-F. A voltage applied across the coil will cause trip of the main switch/circuit breaker mechanism. Note: Not possible in combination with PT terminals. 30 1.18 Typical applications Order numbering code blade terminals DIN 46244-C-Ms-S (QC 2x.110) Type No.