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Thermal Overcurrent Circuit Breakers 104/105/106

Thermal Overcurrent Circuit Breakers 104/105/106

Thermal Overcurrent Circuit Breakers 104/105/106

Product catalog summary
Overview: This document provides detailed specifications and technical data for E-T-A's thermal overcurrent circuit breakers, specifically models 104, 105, and 106. These are miniaturized single-pole thermal circuit breakers with a push-to-reset, trip-free, snap-action mechanism, suitable for various applications including motors, transformers, and marine equipment.
Specifications:
  • Voltage Rating: AC 240 V; DC 48 V (UL: AC 250 V; DC 48 V)
  • Current Ratings: 0.05 to 10 A
  • Typical Life: Up to 3,000 operations at specified conditions
  • Ambient Temperature: -20 to +60 °C (-4 to +140 °F)
  • Insulation Coordination: Rated impulse withstand voltage of 2.5 kV
  • Dielectric Strength: AC 3,000 V
  • Interrupting Capacity: 6 x IN for both AC and DC
  • Protection Degree: IP40 for operating area
Technical Data:
  • Vibration Resistance: 10 g (57-500 Hz)
  • Shock Resistance: 25 g (11 ms)
  • Corrosion Resistance: 96 hours at 5% salt mist
  • Humidity Resistance: 240 hours at 95% RH
  • Mass: Approximately 10 g
Approvals: Approved to CBE standard EN 60934 (IEC 60934) with additional approvals from VDE, SEV, CSA, and UL for specified voltage and current ratings.
Ordering Information: The document provides a detailed breakdown of ordering codes based on type, terminal design, and optional features such as manual release and auxiliary contacts.
Installation and Dimensions: Detailed diagrams and dimensions are provided for PCB and panel mounting options, with emphasis on metric measurements.
Time/Current Characteristics: The document includes typical time/current characteristic curves and notes on derating factors based on ambient temperature to prevent nuisance tripping.
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Catalog excerpts

Thermal Overcurrent Circuit Breakers 104/105/106-1

www.e-t-a.com 1 - 15 Thermal Overcurrent Circuit Breakers 104/105/106-... Issue C 1 Current Internal Current Internal rating (A) resistance (Ù) rating (A) resistance (Ù) 0.05 285 1.8 0.28 0.08 134 2 0.25 0.1 81 2.5 0.18 0.2 22 3 0.11 0.3 8.7 3.5 0.076 0.4 5.5 4 0.067 0.5 3.3 4.5 0.051 0.6 2.45 5 0.05 0.7 1.6 6 0.05 0.8 1.45 7 0.05 1 0.9 8 0.05 1.2 0.6 10 0.05 1.5 0.4 Description Typical applications Ordering information Approvals Technical data Miniaturised single pole thermal circuit breaker with push-to-reset, tease- free, trip-free, snap action mechanism (R-type TO CBE to EN 60934). Available in versions for PCB or panel mounting, snap-in or threadneck, or as an integral type. Manual release facility optional for type 105. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings see type 1140. Motors, transformers, solenoids, printed circuit boards, hand-held machines and appliances, marine applications, caravans. 104-... 105-... 106-... For further details please see chapter: Technical Information Voltage rating AC 240 V; DC 48 V (UL: AC 250 V; DC 48 V) Current ratings 0.05...10 A Auxiliary circuit 0.5 A, AC 240 V, DC 28 V Typical life AC 240 V 0.05...8 A 2,000 operations at 1 x IN, inductive 0.05...5 A 3,000 operations at 2 x IN, inductive 6...8 A 500 operations at 2 x IN, inductive DC 48 V 0.05...8 A 2,000 operations at 1 x IN, inductive 0.05...5 A 3,000 operations at 2 x IN, inductive 6...8 A 500 operations at 2 x IN, inductive 10 A 200 operations at 1 x IN, inductive 10 A 50 operations at 2 x IN, inductive Ambient temperature -20...+60 °C (-4...+140 °F) T 60 Insulation co-ordination rated impulse pollution (IEC 60664 and 60664 A) withstand voltage degree 2.5 kV 2 reinforced insulation in operating area Dielectric strength test voltage (IEC 60664 and 60664A) operating area AC 3,000 V Insulation resistance > 100 MÙ (DC 500 V) Interrupting capacity Icn 0.05...8 A 6 x IN AC 0.05...10 A 6 x IN DC Interrupting capacity IN UN (UL 1077) 0.05...10 A AC 250 V 2,000 A 0.05...10 A DC 48 V 200 A Degree of protection operating area IP40 (IEC 60529/DIN 40050) terminal area IP00 Vibration 10 g (57-500 Hz) ± 0.76 mm (10-57 Hz), to IEC 60068-2-6, test Fc, 10 frequency cycles/axis Shock 25 g (11 ms) to IEC 60068-2-27, test Ea Corrosion 96 hours at 5 % salt mist, to IEC 60068-2-11, test Ka Humidity 240 hours at 95 % RH, to IEC 60068-2-78, test Cab Mass approx. 10 g Authority Voltage ratings Current ratings VDE, SEV, AC 240 V 0.05...8 A DC 48 V 0.05...10 A CSA, UL AC 250 V; DC 48 V 0.05...10 A Circuit breakers with -Si51 not approved Standard current ratings and typical internal resistance values Type No. 104 PCB mounting type (-PR), or integral type (-P30/P10) 105 snap-in panel mounting 106 threadneck panel mounting with hex and knurled nut* 106-M2 threadneck panel mounting 3/8-27UNS with collar, hex nut and knurled nut* Terminal design P10 blade terminals A6.3-0.8 (QC .250) P30 blade terminals A2.8-0.8 (QC .110) PR solder terminal pins for PCB mounting (type 104 only) PR2 PCB mounting (vertical), type 104 only up to 6 A PR3 PCB mounting (vertical), type 104 only Shunt terminal (optional) A3 same as main terminals (up to IN 6 A/3 A max. load) Manual release facility (optional) H only with type 105 Auxiliary contacts (optional) Si51 type 104 only Current ratings 0.05...10 A 106 - P30 - .. - .. - .. - 5 A = ordering example The exact part number required can be built up from the table of choices shown above. Ordering references for optional features should be omitted if not required. * mounting hardware bulk shipped

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Thermal Overcurrent Circuit Breakers 104/105/106-4

1 - 18 www.e-t-a.com Thermal Overcurrent Circuit Breakers 104/105/106-... Issue C 1 1 4 30 Trip time in seconds … times rated current 0.05 - 6 A 7 - 10 A 10000 1000 100 10 1 0.1 2 6 8 10 20 Installation drawings Typical time/current characteristics at +23 °C/+73.4 °F Accessories Internal connection diagrams mounting area mounting area 8 .315 operating area 8 .315 mounting area operating area 8 104-… 105-… 106-… .315 operating area 8 .315 8 .315 8 .315 8 .315 8 .315 8 .315 8 .315 8 .315 8 .315 1 2 5 4 1 2 1 2 3 3 Types 104 105 106 Types 104-...-A3 105-...-A3 106-...-A3 Type 104-...-A3-Si51 Water...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.