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Miniature Circuit Breakers (MCBs)
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M9F23150
Schneider Electric M9F23150 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed for a single pole configuration. It features a rated current of 50A and is compliant with UL1077 standards. The MCB has a rated insulation voltage (Ui) of 500V, a DC rated voltage of 60Vdc, and an AC operating voltage (Ue) of 415V. It is capable of handling rated impulse voltages (Uimp) up to 6kV. The short circuit breaking rating is specified as 14kA AIR at both 120Vac and 240Vac, and 10kA AIR at 277Vac and 65Vdc. For AC applications, the phase-to-neutral rated voltage is 277V. This product protects a single pole and is characterized by a D tripping curve.
Schneider Electric
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M9F23145
Schneider Electric M9F23145 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed for a single pole configuration. It features a rated current of 45A and is compliant with UL1077 standards. The MCB operates with a rated insulation voltage (Ui) of 500V, a DC rated voltage of 60Vdc, and an AC operating voltage (Ue) of 415V. It is equipped to handle rated impulse voltage (Uimp) of 6kV. The short circuit breaking rating is specified at 14kA AIR for both 120Vac and 240Vac, and 10kA AIR for 277Vac and 65Vdc. The rated voltage for phase-to-neutral applications is 277V. This model protects a single pole and follows a D tripping curve.
Schneider Electric
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2CDS274327R0587
ABB 2CDS274327R0587 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 60A. It complies with UL489 design standards. This MCB features a 4-pole (4P) 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 applications. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V, and the secondary current is denoted as K.
ABB Control
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2CDS274327R0577
ABB 2CDS274327R0577 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 4-pole (4P) configuration and is suitable for DIN rail mounting. The rated impulse voltage (Uimp) is specified at 70.5 mm, with a rated insulation voltage (Ui) of 69 mm. It supports a control voltage for AC operations and is rated for 6000 operations. The supply voltage is up to 400 V, and it includes a secondary current labeled as 'K'.
ABB Control
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2CDS274327R0517
ABB 2CDS274327R0517 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 25A. It complies with UL489 design standards. This 4-pole (4P) MCB features a rated insulation voltage (Ui) of 69 mm and a rated impulse voltage (Uimp) of 70.5 mm. It is designed for DIN rail mounting and supports a control voltage (AC) for operation. The supply voltage durability is rated for 6000 operations, and it includes a number of Normally Closed (NC) circuits specified as 400 V. The secondary current is denoted as K, indicating a specific characteristic of the breaker related to its operation or performance.
ABB Control
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2CDS274327R0547
ABB 2CDS274327R0547 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 35A. It complies with UL489 design standards. This MCB features a 4-pole (4P) 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 70.5 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'.
ABB Control
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2CDS274327R0467
ABB 2CDS274327R0467 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 16A. It complies with UL489 design standards. This MCB features a 4-pole (4P) 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 applications. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits specified at 400 V, and the secondary current is denoted as K.
ABB Control
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2CDS274327R0407
ABB 2CDS274327R0407 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 4-pole (4P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is 69 mm, and it has a control voltage for AC applications. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V, and the secondary current is denoted as K.
ABB Control
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2CDS274327R0447
ABB 2CDS274327R0447 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 13A. It complies with UL489 design standards. This 4-pole (4P) MCB features a rated impulse voltage (Uimp) of 70.5 mm and a rated insulation voltage (Ui) of 69 mm. It is designed for DIN rail mounting and supports a control voltage for AC operations. The supply voltage is rated for 6000 operations, and it includes a number of Normally Closed (NC) circuits rated at 400 V. The communication protocol is specified as 100 mm, and the secondary current is denoted as K.
ABB Control
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2CDS274327R0427
ABB 2CDS274327R0427 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 10A. It complies with UL489 design standards. This 4-pole (4P) MCB features a rated insulation voltage (Ui) of 69 mm and a rated impulse voltage (Uimp) of 70.5 mm. It is designed for DIN rail mounting and has a supply voltage durability of 6000 operations. The control voltage (AC) specification and the number of Normally Closed (NC) circuits are not standardly applicable to MCBs, indicating a possible error in the provided data. The secondary current is denoted as 'K', which requires clarification as it is not a standard specification for MCBs.
ABB Control
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2CDS274327R0337
ABB 2CDS274327R0337 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 4A. It complies with UL489 design standards. This MCB features a 4-pole (4P) 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 includes a number of Normally Closed (NC) circuits specified at 400 V, and the secondary current is denoted as K.
ABB Control
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2CDS274327R0317
ABB 2CDS274327R0317 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 4-pole (4P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is 69 mm, and it has a control voltage for AC applications. The supply voltage durability is rated for 6000 operations. It supports a secondary current labeled as "K" and is designed to handle a rated impulse voltage (Uimp) of 70.5 mm. The net width of the device is specified for installations requiring 4-poles spacing.
ABB Control
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2CDS274327R0277
ABB 2CDS274327R0277 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 4-pole (4P) configuration and is suitable for DIN rail mounting. The rated insulation voltage (Ui) is specified as 69 mm, and it has a control voltage for AC. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V. The communication protocol and rated impulse voltage (Uimp) specifications are not applicable to the standard parameters of MCBs and seem to be incorrectly listed.
ABB Control
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2CDS274327R0257
ABB 2CDS274327R0257 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 1.6A. It complies with UL489 design standards. This MCB features a 4-pole (4P) 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 includes a number of Normally Closed (NC) circuits rated at 400 V. The communication protocol and rated impulse voltage (Uimp) are not standardly applicable to the basic description of an MCB's functionality or physical specifications as typically understood, suggesting a potential error in the provided data for these parameters.
ABB Control
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2CDS274327R0217
ABB 2CDS274327R0217 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 4-pole (4P) 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 applications. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V. The communication protocol and rated impulse voltage (Uimp) specifications are not applicable to the standard parameters of MCBs and seem to be incorrectly listed.
ABB Control
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2CDS274327R0187
ABB 2CDS274327R0187 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 0.75A. It complies with UL489 standards, indicating its adherence to specific safety and performance criteria. This MCB features a 4-pole (4P) design, suitable for installation on a DIN rail, enhancing its compatibility with various electrical panel setups. The rated insulation voltage (Ui) is specified at 69 mm, and it has a control voltage for AC. The supply voltage is rated for 6000 operations, indicating its durability and operational lifespan. Additionally, it includes a number of Normally Closed (NC) circuits rated at 400 V, and a secondary current designated as K, although the exact value is not specified.
ABB Control
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2CDS274327R0087
ABB 2CDS274327R0087 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 0.2A. It complies with UL489 design standards. This MCB features a 4-pole (4P) 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 includes a number of Normally Closed (NC) circuits specified at 400 V. The communication protocol and rated impulse voltage (Uimp) are not standardly defined within the context of MCB specifications and seem to be incorrectly listed; thus, they are omitted from this description.
ABB Control
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2CDS273327R0607
ABB 2CDS273327R0607 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 63A. 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 includes a number of Normally Closed (NC) circuits specified at 400 V, and the secondary current is denoted as K.
ABB Control
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2CDS273327R0577
ABB 2CDS273327R0577 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 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 applications. The supply voltage durability is rated for 6000 operations. Additionally, it includes a number of Normally Closed (NC) circuits specified at 400 V, and the secondary current is denoted as K.
ABB Control
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2CDS273327R0467
ABB 2CDS273327R0467 is a Miniature Circuit Breaker (MCB) designed with screw-clamp connections and a rated current of 16A. 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 in this description. The control voltage operates on AC, and the MCB 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 potential typographical errors in the provided data.
ABB Control
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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.