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Miniature Circuit Breaker
Miniature Circuit Breaker
Miniature circuit breakers (MCBs) are designed to protect electrical circuits from overloads and short circuits, while also providing on/off switching functions. They are available in capacities of 3 kA, 4.5 kA, 6 kA, 10 kA, and 16 kA, and comply with TS 5018-1 IEC 60898-1 standards and the European Community Directive 72-23-CEE on low voltage.
- Rated Current: 1 A to 125 A at 30°C.
- Rated Voltage: 230/400 V AC.
- Rated Insulation Voltage: 690 V AC.
- Rated Impulse Voltage: 6 kV.
- Rated Breaking Capacity: 6 kA, 10 kA, or 16 kA.
- Frequency: 50-60 Hz.
- Protection Class: IP 20.
- Ambient Operating Temperature: -30°C to +60°C.
- Storage Temperature: -40°C to +70°C.
- Assembly: 35 mm DIN rail according to EN 60715.
- Connection Capacity: Up to 50 mm².
- Max Tightening Torque: 2 Nm or 3.5 Nm.
MCBs are mounted on a 35 mm DIN rail and can be connected with cables up to 50 mm². The recommended energy entry is from above, but connections can be made from both above and below.
MCBs operate at temperatures between -30°C and +60°C and altitudes up to 2000 m. Overload emitters are calibrated at 30°C. For operations outside these conditions, a temperature compensation table should be used.
The document includes current-time characteristics for different curves (B, C, D) and rated breaking capacities (6 kA, 10 kA, 16 kA), illustrating the time it takes for the breaker to trip at various multiples of the rated current.
B type fuses are used for lighting and socket circuits where sudden overloads do not occur during switching.
The document provides detailed specifications and ordering information for various types of MCBs and related accessories, including product codes, technical specifications, and ordering details for different MCB models.
Order codes for each MCB type and configuration are provided, along with minimum order quantities and packaging details. It emphasizes the need to inquire about price and delivery times for RoHS-compliant products.
Various accessories are listed, including trip coils and auxiliary contacts for different voltage ranges and breaking capacities, each with a specific order code.
The document highlights the importance of specifying the rated current and breaking capacity when ordering MCBs and notes the availability of DC products for photovoltaic systems and DC surge arresters.
MCBs are available in different pole configurations: 1P, 2P, 3P, and 4P, with various tripping curves (B, C, D) to suit different applications.
- B Curve: Suitable for incandescent lamps, heaters, and PLC systems.
- C Curve: Ideal for fluorescent lamps, power socket circuits, low-power motors, air-conditioners, and power distribution panels.
- D Curve: Used for motor starters, pumps, compressors, and welding machines.
The document outlines conditions under which MCBs will trip or not trip based on the rated current and test current.
Information necessary for ordering automatic fuses includes nominal current, breaking capacity, number of poles, and tripping curve.
- Curve B: Protects incandescent lamps, heaters, and PLC systems.
- Curve C: Protects fluorescent lamps, power circuits, and low-energy motors.
- Curve D: Protects motor starters, pumps, and compressors.
Similar to MCBs, the document specifies conditions for tripping and non-tripping of fuses based on current ratings and test conditions.
Catalog excerpts
Min iatu re C ircu it B rea ker Fus ible s Au tom átic os
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MINIATURE CIRCUIT BREAKER Fusibles Automáticos
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Miniature Circuit Breaker Fusibles Automáticos Content Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . .108 3 kA Miniature Circuit Breakers . . . . . . . . . . . . . . . . . .110 4,5 kA Miniature Circuit Breakers . . . . . . . . . . . . . . . .111 6 kA Miniature Circuit Breakers . . . . . . . . . . . . . . . . . .112 6 kA Miniature Circuit Breakers . . . . . . . . . . . . . . . . . .113 10 kA Miniature Circuit Breakers . . . . . . . . . . . . . . . . .114 10 kA Miniature Circuit Breakers . . . . . . . . . . . . . . . . .115 6 kA Miniature Circuit Breakers (80-100-125 A)...
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <& Technical Specifications Caractensticas Tecnicas Type Tipo
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <& 3 kA Miniature Circuit Breakers Fusibles Automaticos De 3 kA Current-Time Characteristics Type Tipo
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Miniature Circuit Breaker Fusibles Automáticos 4,5 kA Miniature Circuit Breakers Type Tipo No of poles Número de polos Rated current (at 30°C) Corriente nominal (a 30ºC) Rated voltage Tensión nominal de funcionamiento Rated insulation voltage Tensión nominal de aislamiento Rated impulse voltage Tensión nominal de resistencia a impacto Rated breaking capacity Capacidad nominal de ruptura Frequency Frequency Energy class Clase de selectividad Electrical life Vida eléctrica Mechanical life Vida mecánica Protection class Grado de protección Ambient operating temperature Temperatura ambiente permitida...
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <& 6 kA Miniature Circuit Breakers A TUVRheinland® Type Tipo Current-Time Characteristics
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Miniature Circuit Breaker Fusibles Automáticos 6 kA Miniature Circuit Breakers Type Tipo No of poles Número de polos Rated current (at 30°C) Corriente nominal (a 30ºC) Rated voltage Tensión nominal de funcionamiento Rated insulation voltage Tensión nominal de aislamiento Rated impulse voltage Tensión nominal de resistencia a impacto Rated breaking capacity Capacidad nominal de ruptura Frequency Frequency Energy class Clase de selectividad Electrical life Vida eléctrica Mechanical life Vida mecánica Protection class Grado de protección Ambient operating temperature Temperatura ambiente permitida...
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <& 10 kA Miniature Circuit Breakers Fusibles Automaticos De 10 kA A TUVRheinland® Current-Time Characteristics Type Tipo
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Miniature Circuit Breaker Fusibles Automáticos 10 kA Miniature Circuit Breakers Type Tipo No of poles Número de polos Rated current (at 30°C) Corriente nominal (a 30ºC) Rated voltage Tensión nominal de funcionamiento Rated insulation voltage Tensión nominal de aislamiento Rated impulse voltage Tensión nominal de resistencia a impacto Rated breaking capacity Capacidad nominal de ruptura Frequency Frequency Energy class Clase de selectividad Electrical life Vida eléctrica Mechanical life Vida mecánica Protection class Grado de protección Ambient operating temperature Temperatura ambiente permitida...
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <&6 kA Miniature Circuit Breakers (80-100-125 A) Fusibles Automaticos De 6 kA (80-100-125 A) Type Tipo Current-Time Characteristics
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Miniature Circuit Breaker <& Fusibles Automaticos10 kA Miniature Circuit Breakers (80-100-125 A) Fusibles Automaticos De 10 kA (80-100-125 A) Type Tipo Current-Time Characteristics
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <&16 kA Miniature Circuit Breakers Fusibles Automaticos De 16 kA Type Tipo Current-Time Characteristics
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Miniature Circuit Breaker Fusibles Automáticos General Information Información General Miniature circuit breakers are the devices that protects the circuit, which they are connected to, against overloads and short circuits and that also perform circuit switch on/off functions. Manufactured as 3 kA, 4.5 kA, 6 kA,10 kA and 16 kA in accordance with TS 5018-1 IEC 60898-1, miniature circuit breakers are also in compliance with European Community Directive 72-23CEE on low voltage. Los fusibles automáticos son los dispositivos que se encargan de proteger los circuitos a los que se encuentran conectados...
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <&Installation And Connection Characteristics Just as cable can be connected up to 50 mm2 to Sigma miniature circuit breakers, which are designed so as to be easily mounted to 35 mm DIN rail in accordance with EN50022, it is also possible to make connection with common automat bar. Maximum tightening torque to be applied for connecting screws is 3,5 Nm and higher tightening moments may damage to terminal clips or the screws. Although Sigma miniature circuit breakers are available for energy input from above and below, it is recommended...
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Miniature Circuit Breaker <& Fusibles AutomaticosFundamentos Para La Selection De Fusible Miniature Circuit Breaker Selection Procedures Automatico I, Thermic Non-Tripping Current B type fuses are generally used to protect lighting and socket circuits, in which sudden overloads do not occur during switching such as house lighting with white heat filament and electrical heaters. Los fusibles de tipo B se utilizan genemlmente para proteger cir-cuitos de toma de energla y en la iluminacion que no genera sobre-cargas subitas durante la conmutacion tales como la iluminacion de hogares de filamento...
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Sigma ^^elektrik Miniature Circuit Breaker <U> Fusibles Automaticos <& Instant tripping values of miniature circuit breakers to used for protecting direct current circuits increases approximately 40%. For example, while a B-Type 10-A miniature circuit breaker performs instant tripping between 30 A and 50 A in AC circuit, the same fuse performs tripping in a DC circuit between 42.5 A and 70 A. Miniature circuit breakers to be used in DC circuits protect the circuit, which they are connected to, without any decrease in their breaking capacity up to 48 volt. In the event that 2 poles of an miniature...
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