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Miniature Circuit Breakers (MCBs)
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2CDS273327R0427
ABB 2CDS273327R0427 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 10A. It complies with UL489 design standards. This MCB features a 3-pole (3P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is specified as 69 mm, which appears to be a typographical error in the context of voltage specifications and might refer to a different parameter or value. The control voltage operates on AC, and the device is designed for 6000 operations. It supports a supply voltage up to 400 V. The communication protocol and rated impulse voltage (Uimp) specifications provided as "100 mm" and "52.5 mm" respectively, seem to be inaccurately represented as measurements in millimeters, which suggests a misunderstanding or miscommunication of technical specifications.
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2CDS273327R0377
ABB 2CDS273327R0377 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 6A. It complies with UL489 design standards. This MCB features a 3-pole (3P) configuration and is suitable for DIN rail mounting. It has a rated insulation voltage (Ui) of 69 mm and a rated impulse voltage (Uimp) of 52.5 mm. The control voltage operates on AC, and it is designed for 6000 operations. The supply voltage is rated at 400 V, and it includes a secondary current labeled as 'K'.
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2CDS273327R0277
ABB 2CDS273327R0277 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 2A. It complies with UL489 design standards. This MCB features a 3-pole (3P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is specified as 69 mm, which appears to be a typographical error in the context of voltage specification and should be disregarded. The control voltage operates on AC, and the device is designed for 6000 operations. It supports a supply voltage up to 400 V. The communication protocol and rated impulse voltage (Uimp) specifications provided as "100 mm" and "52.5 mm" respectively, seem to be inaccurately described in terms of physical dimensions rather than electrical characteristics and should be clarified. The product includes a number of Normally Closed (NC) circuits and mentions a secondary current labeled as "K," which requires further specification for complete understanding.
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2CDS273327R0257
ABB 2CDS273327R0257 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 1.6A. It complies with UL489 standards, ensuring its suitability for various applications. This MCB features a 3-pole (3P) design, facilitating its installation on DIN rails. It is engineered to withstand a rated impulse voltage (Uimp) of 52.5 mm and a rated insulation voltage (Ui) of 69 mm. The control voltage operates on AC, and it is built to endure up to 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V, and it supports a secondary current designated as K.
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2CDS273327R0317
ABB 2CDS273327R0317 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 3A. It complies with UL489 design standards. This MCB features a 3-pole (3P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is specified as 69 mm, which appears to be a typographical error in the context of voltage specification and should be reconsidered for accuracy. The control voltage operates on AC, and the device is designed for 6000 operations. It supports a supply voltage up to 400 V. The communication protocol and rated impulse voltage (Uimp) specifications provided as "100 mm" and "52.5 mm" respectively, seem to be inaccurately represented as measurements in millimeters rather than their correct electrical parameters, indicating a need for clarification.
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2CDS273327R0357
ABB 2CDS273327R0357 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 5A. It complies with UL489 design standards. This MCB features a 3-pole (3P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is specified at 69 mm, and it has a control voltage for AC operations. The supply voltage durability is rated for 6000 operations. Additionally, it supports a secondary current labeled as "K," although the specific value is not provided. The rated impulse voltage (Uimp) is 52.5 mm, indicating its capability to withstand impulse voltages of this magnitude.
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2CDS273327R0087
ABB 2CDS273327R0087 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections. It features a rated current of 0.2A and adheres to UL489 design standards. This MCB has a 3-pole (3P) configuration with a net width corresponding to standard dimensions for such devices. It is designed for DIN rail mounting, ensuring ease of installation in various applications. The rated insulation voltage (Ui) is specified at 69 mm, with a control voltage for AC systems. It supports a supply voltage that allows for up to 6000 operations. Additionally, this model includes a number of Normally Closed (NC) circuits rated for 400 V, and it utilizes a secondary current designated as K.
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2CDS272327R0577
ABB 2CDS272327R0577 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 50A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. The rated impulse voltage (Uimp) is 35 mm, and the rated insulation voltage (Ui) is 69 mm. It supports a control voltage for AC operations and is rated for 6000 operations. The supply voltage is up to 400 V.
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2CDS272327R0537
ABB 2CDS272327R0537 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 32A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It has a rated insulation voltage (Ui) of 69 mm and a control voltage for AC circuits. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V, and a secondary current designated as K.
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2CDS272327R0517
ABB 2CDS272327R0517 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 25A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It has a rated insulation voltage (Ui) of 69 mm, a control voltage for AC operations, and is designed for 6000 operations. The supply voltage is rated at 400 V. The product dimensions include a net width of 2-poles (2P), with a communication protocol width of 100 mm and a rated impulse voltage (Uimp) of 35 mm.
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2CDS272327R0447
ABB 2CDS272327R0447 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 13A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It has a rated insulation voltage (Ui) of 69 mm and a rated impulse voltage (Uimp) of 35 mm. The control voltage operates on AC, and it is designed for 6000 operations. The supply voltage is up to 400 V. It does not specify the number of Normally Closed (NC) circuits or secondary current details beyond the provided parameters.
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2CDS272327R0407
ABB 2CDS272327R0407 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 8A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It has a rated impulse voltage (Uimp) of 35 mm and a rated insulation voltage (Ui) of 69 mm. The control voltage operates on AC, and it is designed for 6000 operations. The supply voltage is up to 400 V, and it includes a secondary current labeled as 'K'.
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2CDS272327R0317
ABB 2CDS272327R0317 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 3A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It has a rated impulse voltage (Uimp) of 35 mm, a rated insulation voltage (Ui) of 69 mm, and is capable of 6000 operations. The control voltage is specified for AC, and it supports a supply voltage up to 400 V. The product dimensions include a net width of 100 mm.
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2CDS272327R0157
ABB 2CDS272327R0157 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections. It has a rated current of 0.5A and complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It is designed to withstand a rated impulse voltage (Uimp) of 35 mm and has a rated insulation voltage (Ui) of 69 mm. The control voltage operates on AC, and the MCB is rated for 6000 operations. It supports a supply voltage up to 400 V and includes a secondary current labeled as 'K'.
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2CDS272327R0217
ABB 2CDS272327R0217 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 1A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. It has a rated insulation voltage (Ui) of 69 mm and a rated impulse voltage (Uimp) of 35 mm. The control voltage operates on AC, and it is designed for 6000 operations. The supply voltage is up to 400 V. This model does not specify communication protocols in terms of standard network communication but mentions a dimension of 100 mm, which seems to be an error in the provided data.
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2CDS272327R0117
ABB 2CDS272327R0117 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 0.3A. It complies with UL489 design standards. This MCB features a 2-pole (2P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is specified as 69 mm, which appears to be a typographical error in the context of voltage specification and should be disregarded for technical accuracy. The control voltage operates on AC, and the supply voltage is rated for 6000 operations. It includes a number of Normally Closed (NC) circuits specified as 400 V, and a secondary current designated as K, which seems to be incomplete or incorrectly provided.
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2CDS272327R0087
ABB 2CDS272327R0087 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections. It features a rated current of 0.2A and complies with UL489 design standards. This MCB has a rated impulse voltage (Uimp) of 35 mm and a rated insulation voltage (Ui) of 69 mm. It is designed for 2-pole (2P) applications with a net width corresponding to the standard dimensions for such configurations. The control voltage is suitable for DIN rail mounting, and it is engineered for up to 6000 operations. The supply voltage is rated for 400 V, and it includes a secondary current labeled as 'K', indicating specific characteristics of the electrical output.
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2CDS271327R0607
ABB 2CDS271327R0607 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 63A. It complies with UL489 standards, featuring a 1-pole (1P) design suitable for DIN rail mounting. The MCB has a rated impulse voltage (Uimp) of 17.5 mm, a rated insulation voltage (Ui) of 69 mm, and is capable of 6000 operations. It operates with a rated voltage (AC) of 230 V phase-to-phase.
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2CDS271327R0557
ABB 2CDS271327R0557 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections. It has a rated current of 40A and complies with UL489 design standards. This MCB features a 1-pole (1P) configuration and is suitable for DIN rail mounting. It is designed for a rated insulation voltage (Ui) of 69 mm and a rated impulse voltage (Uimp) of 17.5 mm. The control voltage operates on AC, and it is engineered for up to 6000 operations. The rated voltage (AC) for phase-to-phase connections is 230 V.
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2CDS271327R0537
ABB 2CDS271327R0537 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections. It has a rated current of 32A and complies with UL489 design standards. This MCB features a 1-pole (1P) configuration and is suitable for DIN rail mounting. The rated impulse voltage (Uimp) is 17.5 mm, and the rated insulation voltage (Ui) is 69 mm. It supports a control voltage for AC operations and is designed for a supply voltage endurance of 6000 operations. The rated voltage (AC) for phase-to-phase connections is 230 V.
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Miniature Circuit Breakers (MCBs)
General Guide & Overview
Welcome to our comprehensive guide on miniature circuit breakers (MCBs). Whether you're an electrical professional or simply interested in understanding the inner workings of your home's electrical system, this article will provide you with all the information you need about MCBs.
MCBs are vital components of electrical systems, offering crucial protection against overloads and short circuits. Unlike traditional fuses, MCBs are automatic switches that respond to changes in current flow. This innovative technology not only enhances safety but also improves convenience for users.
In this guide, we will explore how MCBs work, the different types available, and the advantages they offer. So let's dive in and unlock the mysteries behind these essential electrical devices.
How Does a Miniature Circuit Breaker Work?
A miniature circuit breaker (MCB) is a vital component of an electrical system, designed to protect against overloads and short circuits. Understanding how an MCB works can help you ensure the safety and efficiency of your electrical installations.
MCBs operate by utilizing two types of tripping mechanisms: thermal tripping and magnetic tripping.
Thermal Tripping
Thermal tripping is the primary mechanism in MCBs. It detects and responds to excessive heat caused by an overload in the circuit. Inside the MCB, there is a bimetallic strip made of two different metals with different expansion coefficients. When the current passing through the MCB exceeds its rated capacity, the bimetallic strip heats up, causing the metals to expand at different rates. As a result, the strip bends and activates the trip mechanism, opening the contacts to interrupt the current flow.
Magnetic Tripping
Magnetic tripping is a secondary mechanism in MCBs. It provides rapid protection against short circuits by detecting strong current surges. Inside the MCB, there is an electromagnetic coil surrounding the current-carrying contacts. When a short circuit occurs, an extremely high current flows through the coil, generating a magnetic field that attracts the armature. The armature then trips the mechanism, opening the contacts and isolating the faulty circuit from the power supply.
The integration of both thermal and magnetic tripping mechanisms allows MCBs to provide reliable protection against a wide range of electrical faults. By quickly detecting and responding to abnormal current conditions, MCBs help prevent damage to electrical equipment, reduce the risk of electrical fires, and ensure the uninterrupted supply of electricity.
Advantages and Application of Miniature Circuit Breakers (MCBs)
Miniature circuit breakers (MCBs) provide a host of advantages compared to traditional fuses. One key advantage is their high responsiveness to changes in current flow, enabling swift and effective protection against overloads and short circuits. With MCBs, you can ensure that your electrical system remains safe and reliable.
MCBs are designed with a trip-free switching mechanism that instantly cuts off power in the event of an overload. This feature enhances the safety of your electrical circuits, preventing any potential damage or hazards. Additionally, MCBs are incredibly user-friendly, offering ease of installation and operation.
Another advantage of MCBs is the wide variety of models available, catering to different application requirements. Whether you need a specific current rating, breaking capacity, or fault protection characteristics, there is an MCB type that suits your needs. This flexibility allows for customization and ensures optimal performance, making MCBs a versatile choice for various electrical systems and applications.
FAQ
A miniature circuit breaker (MCB) is an important component of an electrical system that provides protection against overloads and short circuits. Unlike traditional fuses, MCBs are automatic switches that open and close in response to changes in current flow, offering improved safety and convenience.
A miniature circuit breaker (MCB) works by using two types of tripping mechanisms: thermal tripping and magnetic tripping. Thermal tripping responds to excessive heat caused by an overload, while magnetic tripping responds to sudden increases in current flow caused by a short circuit.
Miniature circuit breakers (MCBs) offer several advantages over traditional fuses. They are highly responsive to changes in current flow and provide reliable protection against overloads and short circuits. MCBs are easy to use, with a trip-free switching mechanism that instantly shuts off power in the event of an overload. They also have a wide range of models available, allowing for customization based on specific application requirements.