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Miniature Circuit Breakers (MCBs)
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M9F53250
Schneider Electric M9F53250 is a Miniature Circuit Breaker (MCB) within the C60BPR sub-range, designed with a 2 Pole configuration and a rated current of 50A. It features a rated insulation voltage (Ui) of 500 V and a rated impulse voltage (Uimp) of 6 kV. This MCB offers a short circuit breaking rating of 10kA AIR at 120Vac, 240Vac, and 125Vdc. It is designed for a rated voltage (AC) phase-to-phase of 440 V and protects 2 poles. The tripping curve for this breaker is classified as D, and it is compliant with UL489 standards.
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M9F53245
Schneider Electric M9F53245 is a Miniature Circuit Breaker (MCB) within the C60BPR sub-range, designed to comply with UL489 standards. This 2-pole MCB has a rated current of 45A and features a rated insulation voltage (Ui) of 500V, with a rated impulse voltage (Uimp) of 6kV. It offers a short circuit breaking rating of 10kA AIR at 120Vac, 240Vac, and 125Vdc. The M9F53245 operates with a rated voltage (AC) for phase-to-phase connections at 440V and protects 2 poles. It is equipped with a D tripping curve.
Schneider Electric
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M9F53163
Schneider Electric M9F53163 is a Miniature Circuit Breaker (MCB) within the C60BPR sub-range, designed for a single pole configuration. It features a rated current of 63A and operates with a rated insulation voltage (Ui) of 500V. The MCB is engineered to withstand rated impulse voltages (Uimp) up to 6kV and offers a short circuit breaking rating of 10kA AIR across 120Vac, 240Vac, and 60Vdc. It supports a rated voltage (AC) for phase-to-phase connections up to 440V. This product ensures protection for 1 pole and is characterized by a D tripping curve, compliant with UL489 standards.
Schneider Electric
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M9F53150
Schneider Electric M9F53150 is a Miniature Circuit Breaker (MCB) within the C60BPR sub-range, designed for a single-pole configuration. It features a rated current of 50A and is compliant with UL489 standards. The MCB has a rated insulation voltage (Ui) of 500V and a rated impulse voltage (Uimp) of 6kV. It offers a short circuit breaking rating of 10kA AIR at 120Vac, 240Vac, and 60Vdc. The rated voltage (AC) for phase-to-phase connections is 440V, with one protected pole. It operates with a D tripping curve.
Schneider Electric
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M9F53145
Schneider Electric M9F53145 is a Miniature Circuit Breaker (MCB) within the C60BPR sub-range, designed for a single pole configuration. It features a rated current of 45A and is compliant with UL489 standards. The MCB has a rated insulation voltage (Ui) of 500 V and a rated impulse voltage (Uimp) of 6 kV. It offers a short circuit breaking rating of 10kA AIR at 120Vac, 240Vac, and 60Vdc. The rated voltage (AC) for phase-to-phase connections is 440 V, with one protected pole. It operates with a D tripping curve.
Schneider Electric
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M9F43345
Schneider Electric M9F43345 is a Miniature Circuit Breaker (MCB) within the C60BP sub-range, designed to comply with UL489 standards. This 3 Pole MCB has a rated current of 45A and features a rated insulation voltage (Ui) of 500V, with a DC rated voltage of 60Vdc. 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 480Y/277Vac as well as 60Vdc. For AC applications, it supports a rated voltage of 240V phase-to-neutral and 415V phase-to-phase. All three poles are protected, and it operates with a D tripping curve.
Schneider Electric
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M9F43263
Schneider Electric M9F43263 is a Miniature Circuit Breaker (MCB) within the C60BP sub-range, designed for two-pole protection with a rated current of 63A. It features a rated insulation voltage (Ui) of 500V, a DC rated voltage of 60Vdc, and an AC rated voltage of 240V phase-to-neutral and 415V phase-to-phase. The M9F43263 has a rated impulse voltage (Uimp) of 6kV and offers a short circuit breaking rating of 14kA AIR at both 120Vac and 240Vac, and 10kA AIR at 480Y/277Vac and 60Vdc. Both poles are protected, and it is equipped with a D tripping curve. This MCB is compliant with UL489 standards.
Schneider Electric
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M9F43245
Schneider Electric M9F43245 is a Miniature Circuit Breaker (MCB) within the C60BP sub-range, designed with a 2 Pole configuration and a rated current of 45A. It features a rated insulation voltage (Ui) of 500 V, a DC rated voltage of 60Vdc, and an impulse voltage (Uimp) rating of 6 kV. This MCB offers a short circuit breaking rating of 14kA AIR at both 120Vac and 240Vac, and 10kA AIR at 480Y/277Vac and 60Vdc. It supports a rated voltage (AC) of 240 V phase-to-neutral and 415 V phase-to-phase, with both poles protected. The tripping curve is classified as D.
Schneider Electric
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M9F43163
Schneider Electric M9F43163 is a Miniature Circuit Breaker (MCB) within the C60BP sub-range, designed for a single pole configuration. It features a rated current of 63A and is compliant with UL489 standards. The MCB has a rated insulation voltage (Ui) of 500V, a DC rated voltage of 60Vdc, and an AC rated voltage of 240V phase-to-neutral and 415V phase-to-phase. It is equipped with a rated impulse voltage (Uimp) of 6kV and offers a short circuit breaking rating of 14kA AIR at both 120Vac and 240Vac, and 10kA AIR at 277Vac and 60Vdc. The protected pole count is 1, and it operates with a D tripping curve.
Schneider Electric
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M9F43150
Schneider Electric M9F43150 is a Miniature Circuit Breaker (MCB) within the C60BP sub-range, designed to comply with UL489 standards. It features a single pole configuration and is rated for a current of 50A. The MCB has a rated insulation voltage (Ui) of 500V, with a DC rated voltage of 60Vdc and an AC rated voltage of 240V phase-to-neutral and 415V phase-to-phase. 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 60Vdc. The protected pole count is one, and it operates with a D tripping curve.
Schneider Electric
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M9F43145
Schneider Electric M9F43145 is a Miniature Circuit Breaker (MCB) within the C60BP sub-range, designed for a single pole configuration. It features a rated current of 45A and is compliant with UL489 standards. The MCB has a rated insulation voltage (Ui) of 500V, a DC rated voltage of 60Vdc, and an AC rated voltage of 240V phase-to-neutral and 415V phase-to-phase. It is equipped with a rated impulse voltage (Uimp) of 6kV and offers a short circuit breaking rating of 14kA AIR at both 120Vac and 240Vac, and 10kA AIR at 277Vac and 60Vdc. The device protects one pole and operates with a D tripping curve.
Schneider Electric
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M9F23463
Schneider Electric M9F23463 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed with a 4 Pole configuration and a rated current of 63A. It features a short circuit breaking rating of 14kA AIR at 240Vac and 10kA AIR at 480Y/277Vac. All four poles are protected, and it operates with a D tripping curve. This MCB is compliant with UL1077 standards.
Schneider Electric
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M9F23450
Schneider Electric M9F23450 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed with a 4 Pole configuration and a rated current of 50A. It features a short circuit breaking rating of 14kA AIR at 240Vac and 10kA AIR at 480Y/277Vac. All four poles are protected, and it operates with a D tripping curve. This MCB is compliant with UL1077 standards.
Schneider Electric
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M9F23445
Schneider Electric M9F23445 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed with 4 poles and a rated current of 45A. It features a short circuit breaking rating of 14kA AIR at 240Vac and 10kA AIR at 480Y/277Vac. All four poles are protected, and it operates with a D tripping curve. This MCB is compliant with UL1077 standards.
Schneider Electric
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M9F23363
Schneider Electric M9F23363 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed to provide circuit protection. It features a 3 Pole configuration and is rated for a current of 63A. This MCB has a short circuit breaking rating of 14kA AIR at 240Vac and 10kA AIR at 480Y/277Vac, with all three poles protected. It operates with a D tripping curve.
Schneider Electric
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M9F23345
Schneider Electric M9F23345 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed to provide circuit protection. It features a 3 Pole configuration and is rated for a current of 45A. This MCB has a short circuit breaking rating of 14kA AIR at 240Vac and 10kA AIR at 480Y/277Vac, with all three poles protected. It operates with a D tripping curve.
Schneider Electric
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M9F23263
Schneider Electric M9F23263 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed to comply with UL1077 standards. This 2-pole MCB is rated for a current of 63A and offers a short circuit breaking rating of 14kA AIR at 240Vac, 10kA AIR at 480Y/277Vac, and 10kA AIR at 125Vdc. Both poles are protected, and it features a D tripping curve.
Schneider Electric
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M9F23250
Schneider Electric M9F23250 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed to provide circuit protection. It features 2 poles, both of which are protected, and operates with a rated current of 50A. This MCB is compliant with UL1077 standards, ensuring its suitability for various applications. It offers a short circuit breaking rating of 14kA AIR at 240Vac, 10kA AIR at 480Y/277Vac, and 10kA AIR at 125Vdc. The tripping curve for this device is classified as D, indicating its response characteristics to overcurrent conditions.
Schneider Electric
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M9F23245
Schneider Electric M9F23245 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed to comply with UL1077 standards. This 2-pole MCB has a rated current of 45A and features a rated insulation voltage (Ui) of 500V, along with a rated impulse voltage (Uimp) of 6kV. It offers a short circuit breaking rating of 14kA AIR at 240Vac, 10kA AIR at 480Y/277Vac, and 10kA AIR at 125Vdc. Both poles are protected, and it operates with a D tripping curve.
Schneider Electric
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M9F23163
Schneider Electric M9F23163 is a Miniature Circuit Breaker (MCB) within the C60SP sub-range, designed for a single pole configuration. It features a rated current of 63A 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 capable of handling an impulse voltage (Uimp) of 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 utilizes a D tripping curve.
Schneider Electric
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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.