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Low Voltage Contactors
Low Voltage Contactors
The document details the specifications for Sigma low voltage contactors, available in 3 and 4 poles, compliant with TS EN 60947-4-1 standards. These contactors are suitable for motor control, lighting systems, and inductive loads, offering various operational currents, thermal currents, and insulation voltages for both AC and DC coils.
Contactors operate within -5°C to +55°C and can be stored between -40°C to +70°C. They are designed for altitudes below 3000 meters and can handle up to 80% relative humidity at +40°C.
Sigma contactors comply with CE standards, offer high electrical and mechanical service life, and are compatible with DIN rail and screw installations. They provide safe operation at low voltages with an IP20 protection degree.
The document outlines utilization categories such as AC-1 for non-inductive loads and AC-2 for starting slip-ring asynchronous motors, specifying power coefficients and application examples.
Standard auxiliary contacts are available in configurations like 1NO+1NC and 2NO+2NC. Coil characteristics include operating ranges and power consumption details for both AC and DC coils.
Details on connection screws, cable sections, and tightening torque are provided, emphasizing the importance of selecting the correct utilization category for reliable operation.
Sigma contactors are designed for safe use in various applications, offering protection against overload currents when used with thermal relays, available in current ratings from 9A to 630A.
The document outlines utilization categories for low voltage contactors, including AC-1, AC-2, AC-3, and AC-4, each associated with specific applications and operational conditions.
Selection criteria for contactors are based on utilization categories, with specific guidelines for AC-1, AC-2, and AC-3 applications.
Tables are provided for selecting thermal relays and contactors for direct starting in AC-3 and star-delta starting configurations.
Guidelines for selecting fuses for three-phase motors are included, based on motor rated power and current.
Tables list maximum rated operating currents and powers for various contactor types across different temperatures and voltages.
The document provides detailed technical specifications and guidelines for selecting and using low voltage contactors in various applications.
Methods for motor plugging and inching are outlined, with a selection table for contactors in Class AC-4.
The importance of the L/R time constant in DC load switching is emphasized, with a serial connection diagram and selection table for DC usage categories.
Selection of contactors for lighting circuits depends on lamp type, compensation availability, and total number of connected lamps.
Guidelines for selecting contactors for capacitor and transformer loads are provided, recommending special SCK type contactors for capacitor switching.
Performance specifications based on AC-3 utilization category are detailed, including rated voltage, current, and service life.
Used for controlling motors with reversible rotation, including a mechanical locking block to prevent simultaneous commissioning.
Designed for controlling 3-phase capacitors, featuring special blocks to limit peak currents and extend service life.
Detailed specifications for auxiliary contacts and low voltage contactors are provided, including various models and configurations.
Designed to protect motor circuits from overloads and phase losses, complying with TS EN 60947-4-1 standards.
Various types of low voltage contactors are listed with specifications for current range, tripping class, and compatibility with thermal relays.
Instructions for normal and angled installation of contactors are provided, along with dimensional drawings.
Diagrams for connecting 3-phase and 1-phase motors using thermal relays are included.
A table assists in selecting the appropriate thermal relay based on motor power and voltage.
Graphs and tables illustrate the tripping characteristics of thermal relays in both cold and hot modes.
Details on ordering codes, minimum order quantities, and packaging for different contactor models are included.
The document provides detailed specifications and ordering information for various types of low voltage contactors and associated accessories.
- 3-Pole Contactors: Available with coil circuits of 24V AC, 48V AC, and 230V AC, with rated power ranges from 4 kW to 18.5 kW.
- 4-Pole Contactors: Coil circuit of 230V AC, with configurations of 4NO or 2NO+2NC, and rated power ranges from 4 kW to 250 kW.
- 6-Pole and 8-Pole Contactors: Coil circuit of 230V AC, with auxiliary contacts of 2NO+2NC, and rated power ranges from 4 kW to 200 kW.
- Mini Contactors: Available with coil circuits of 230V AC and 24V DC, with rated power ranges from 2.2 kW to 7.5 kW.
- Spare Coils: Available for various voltage supplies.
- Spare Contact Blocks: Available in various configurations.
- Thermal Relays: Designed for use with specific contactor models.
Each product type is associated with a specific order code, minimum order quantity, and packaging details.
Catalog excerpts
Contactores De Baja Tensión
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Low Voltage Contactors Contactores De Baja Tensión Content Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . .180 New Type Of Contactors For Industrial Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .183 Advantages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183 Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .183 Auxiliary Contact Ratings According To Different Utilization Categories . . . . . . . . . . . . . . . ....
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Low Voltage Contactors Contactores De Baja Tensión Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Thermal Relay Auxiliary Contact Current Values . . . . . . . . . . 200 Thermal Relay - Contactor Compatibility . . . . . . . . . . . . . . . . 200 Thermal Relay Tripping Classes . . . . . . . . . . . . . . . . .201 Motor Connection Diagrams . . . . . . . . . . . . . . . . . . . . .201 Thermal Relay Selection Table . . . . . . . . . . . . . . . . . .202 Thermal Relay Tripping Characteristics . . . . . . . . . . .203 Installation . . . . . . . . . . . . ....
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Low Voltage Contactors Contactores De Baja Tensión
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Sigma ^^elektrik Low Voltage Contactors <U> Contactores De Baja Tension © Especificaciones Tecnicas Auxiliary contact technical specifications Especificaciones tecnicas del contacto auxiliar Number of auxiliary contacts (standard) Numero de contactos auxiliares (estandar) Control unit specifications Especificaciones del circuito de control Coil type Tipo de bobina * Optional - Ask for offer. ** Request information for DC supply voltage. * Opcion - Pedirpresupuesto ** Para la corriente de bobina DC pida mas informacion
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Low Voltage Contactors <& Contactores De Baja Tension 1NO+1NC
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Low Voltage Contactors <U> Contactores De Baja Tension © Sigma ^^elektrik
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Information General Low Voltage Contactors <& Contactores De Baja Tension Sigma low voltage contactors are produced as 3 and 4 poles in accordance with TS EN 60947-4-1. As stated in TS EN 60947-41, they can be safely used in several usage categories to switch and control motors, lighting systems, compensation systems and several inductive loads. When Sigma AC power contactors are used together with thermic relays, they protect the circuits against over-load currents. Los contactores de baja tension de 3 y 4 polos Sigma son fabrica-dos en consonancia con la normativa TS EN 60947-4-1. Como se especifica...
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Sigma ^^elektrik Low Voltage Contactors <U> Contactores De Baja Tension © 186 O Contactor Contactor © Interlock unit (SAR9) Bloque de bloqueo mecanico (SAR9) © Interlock holder Mango de bloqueo mecanico © Side-on auxiliary contact Contacto auxiliar de montaje lateral © Terminal cover (for SCM 9-85 and SCG 50-95) Cubierta del terminal (para SCM 9-85 y SCG 50-95) © Head-on auxiliary contact ( 2 contact / SAC 2) Contacto auxiliar de montaje superior (2 contactos/SAC 2) & Head-on auxiliary contact (4 contact / SAC 4) Contacto auxiliar de montaje superior (4 contactos/SAC 4) © Thermal overload relay...
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Low Voltage Contactors (B Contactores De Baja Tension Auxiliary Contact Ratings According To Valores De Los Contactores Auxiliares Segun
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Sigma ^^elektrik Low Voltage Contactors <U> Contactores De Baja Tension © Connecting Screws And Cable Sections_ Secciones Del Cable Y De Los Tornillos De Utilization Categories While selecting the contactors to be used for several applications, utilization category in which the load controlled by the contactor is identified is the basis. Based on the application, usage categories determine switch off current, breaking current and power factor. Accurate selection of contactor for an application refers to the operation of that contactor in which such current is supplied to the load in a reliable...
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Utilization Categories In Which Contactors Are Categorias De Uso De Los Contactores Mas Most Used Utilizados Utilization category Categoria de uso Contactor Selection According To Utilization Categories Selecting Contactors To Be Used In Class AC-1 AC-1 category contains non-inductive ohmic character loads. Heater circuits may be given as an example for this. Closing current equals to breaking current in AC-1 category. In the control of single-phase heater circuits, if 2 poles are connected in series, nominal operating current may be taken as 1.6 times the operating current of contactor; if 3...
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Sigma ^^elektrik Low Voltage Contactors <U> Contactores De Baja Tension ©Eleccion De Contactor Para La Categoria De Uso En Contactor Selection For AC-1 Utilization Category La Categoria De Uso AC-1 Selecting Contactors To Be Used In Class AC-2 In case of starting slip-ring asynchronous motors, braking with inverse current and inching, contactor selection must be performed in accordance with AC-2 utilization category. Crane and metallurgy applications, wire and cable pulling machines are included in this category. In class AC-2, contactor must close and break 2.5 times the nominal operating current....
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Low Voltage Contactors Contactores De Baja Tensión Elección Del Contactor Que Se Utilizará En La Clase AC-3 Selecting Contactors To Be Used In Class AC-3 Es categoría de utilización que se utiliza más frecuentemente. Indica la clase AC-3 de arranque y freno para los motores de jaula de ardilla. En el estándar esta corriente está definitiza como 6xla. El contactor corta toda la corriente de carga. los compresores, bombas, ventiladores, válvulas, ascensores, transportadores, acondicionadores entran en esta categoría. This is the most frequently used utilization category. It determines status of...
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Low Voltage Contactors <U> Contactores De Baja Tension © Tabla De Selecion Del Contactor Y El Rele Termico Selection Table Of Thermal Relay + Contactor To Be Que Se Utilizara En El Arranque Directo Para La Used In Direct Starting For Class AC-3 Clase AC-3 Type Starting current Corriente de arranque Starting torque Potencia de arranque ■ Starting current is 1.8 - 2.6 times of the rated current La corriente de arranque es entre 1.8 - 2.6 veces la corriente nominal ■ Starting torque is 0.5 times of the rated torque La potencia de arranque es entre 0,5 veces la potencia nominal
Open the catalog to page 16All SIGMA ELEKTRIK catalogs and technical brochures
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