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Molded Case Circuit Breakers (MCCB)
Molded Case Circuit Breakers (MCCB) - Telemecanique Sensors
An MCCB, or Molded Case Circuit Breaker, is an electrical safety device that automatically disconnects electrical power when it identifies an overload, short circuit, or ground fault. Its purpose is to safeguard an electrical circuit from harm due to excessive current caused by an overload or short circuit.
Found 3 products
Square D by Schneider Electric HGF36150U31XAAUOYH1 is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT HGF sub-range. It features a factory-installed 24Vdc undervoltage (U/V) trip release coil and a factory-installed 1A/1B (1NO+1NC) auxiliary switch with wire harness. Designed for PowerPact H-Frame 150 Micrologic 3.2 (LI), it is a 3-pole (3P) device rated for 150A and capable of handling 600Vac/500Vdc with a busbar rating of 18kA at 80% rated capacity. The connection is facilitated by a terminal nut kit for fixed busbar connections on both line and load sides. It offers long-time (L) and instantaneous (I) protection functions, with a rated insulation voltage (Ui) of 750V, and operating voltages of 600Vac, 600Y/347Vac, and 500Vdc. The unit is designed for individual mounting on a plate, with dimensions of 163mm in height, 104mm in width, and 86mm in depth, and it has an IP40 degree of protection. The operating mode is manual toggle, with protection settings adjustable for overload (0.3...1 x In, 50A...150A) and short-circuit (1.5...15 x In, 225A...2250A). The control voltage for the undervoltage trip coil allows circuit breaker opening when the supply voltage drops to 35%-70% of its rated control voltage, and closing is permitted when it reaches 85% of the rated control voltage. The rated operating voltage (Ue) is 690V, with a rated impulse voltage (Uimp) of 8kV. The trip current rating is 150 AT, with a frame current rating of 150 AF, and short circuit breaking ratings as specified under UL489 standards. The trip unit type is an electronic Micrologic Standard 3.2 (LI) with no display, categorized under utilisation category A.
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Square D by Schneider Electric HDF36150U33X is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT HDF sub-range, featuring a PowerPact H-Frame 150 Micrologic 3.2S (LSI) design. It is a 3-pole (3P) device with a rated current of 150A and offers a connection via a terminal nut kit for fixed busbar connections on both line and load sides. This MCCB provides long-time protection (L), short-time protection with fixed time delay (S), and instantaneous protection (I), with adjustable settings for each protection function. It has a rated insulation voltage (Ui) of 750 V, a rated voltage (AC) of 600Vac/600Y/347Vac, and a rated voltage (DC) of 250Vdc. The device is designed for individual unit mount on plate, with a net height of 163 mm, a net width of 104 mm, and a net depth of 86 mm. It features a degree of protection of IP40 and operates via a toggle (manual). The MCCB has a rated operating voltage (Ue) of 690 V, a rated impulse voltage (Uimp) of 8 kV, and a trip current rating of 150 AT. Its frame current rating is 150 AF, and it has a short circuit breaking rating of 25kA at 240Vac, 18kA at 480Vac/480Y/277Vac, 14kA at 600Vac/600Y/347Vac, and 20kA at 250Vdc, all according to UL489 standards. The trip unit type is an electronic Micrologic Standard 3.2S (LSI) with no display, and it falls under utilisation category A.
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Square D by Schneider Electric LGF36600U31XAE is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT LGF sub-range. It features a factory-installed 1A/1B (1NO+1NC) auxiliary switch (low level) in a PowerPact L-Frame, with a 600 Micrologic 3.3 (LI) 3P 600A configuration. This MCCB operates at a rated current of 600A and has a rated insulation voltage (Ui) of 750 V, with an AC rated voltage of 600Vac 600Y/347Vac. It is designed for individual unit mount on plate, with dimensions of 382 mm in height, 153 mm in width, and 171 mm in depth. The degree of protection is IP40, and it operates via a toggle (manual) mechanism. Protection functions include long-time protection (L) adjustable from 0.3 to 1 x In (50A to 150A) and instantaneous protection (I) adjustable from 1.5 to 11 x In (900A to 6600A). The rated operating voltage (Ue) is 690 V, with a rated impulse voltage (Uimp) of 8 kV. The trip current rating is 600 AT, with a frame current rating of 600 AF. Its short circuit breaking rating varies from 65kA at 240Vac to 20kA at 500Vdc, according to UL489 standards. The trip unit type is an electronic Micrologic Standard 3.3 (LI) with no display, and it falls under utilisation category A. Connection is facilitated by a terminal nut kit for fixed busbar connection on both line and load sides.
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| Item | Manufacturer | Price | Stock | Delivery | |
|---|---|---|---|---|---|
HGF36150U31XAAUOYH1 Square D by Schneider Electric HGF36150U31XAAUOYH1 is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT HGF sub-range. It features a factory-installed 24Vdc undervoltage (U/V) trip release coil and a factory-installed 1A/1B (1NO+1NC) auxiliary switch with wire harness. Designed for PowerPact H-Frame 150 Micrologic 3.2 (LI), it is a 3-pole (3P) device rated for 150A and capable of handling 600Vac/500Vdc with a busbar rating of 18kA at 80% rated capacity. The connection is facilitated by a terminal nut kit for fixed busbar connections on both line and load sides. It offers long-time (L) and instantaneous (I) protection functions, with a rated insulation voltage (Ui) of 750V, and operating voltages of 600Vac, 600Y/347Vac, and 500Vdc. The unit is designed for individual mounting on a plate, with dimensions of 163mm in height, 104mm in width, and 86mm in depth, and it has an IP40 degree of protection. The operating mode is manual toggle, with protection settings adjustable for overload (0.3...1 x In, 50A...150A) and short-circuit (1.5...15 x In, 225A...2250A). The control voltage for the undervoltage trip coil allows circuit breaker opening when the supply voltage drops to 35%-70% of its rated control voltage, and closing is permitted when it reaches 85% of the rated control voltage. The rated operating voltage (Ue) is 690V, with a rated impulse voltage (Uimp) of 8kV. The trip current rating is 150 AT, with a frame current rating of 150 AF, and short circuit breaking ratings as specified under UL489 standards. The trip unit type is an electronic Micrologic Standard 3.2 (LI) with no display, categorized under utilisation category A. | Telemecanique Sensors | $1,105.97 | Quick Quote | ||
HDF36150U33X Square D by Schneider Electric HDF36150U33X is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT HDF sub-range, featuring a PowerPact H-Frame 150 Micrologic 3.2S (LSI) design. It is a 3-pole (3P) device with a rated current of 150A and offers a connection via a terminal nut kit for fixed busbar connections on both line and load sides. This MCCB provides long-time protection (L), short-time protection with fixed time delay (S), and instantaneous protection (I), with adjustable settings for each protection function. It has a rated insulation voltage (Ui) of 750 V, a rated voltage (AC) of 600Vac/600Y/347Vac, and a rated voltage (DC) of 250Vdc. The device is designed for individual unit mount on plate, with a net height of 163 mm, a net width of 104 mm, and a net depth of 86 mm. It features a degree of protection of IP40 and operates via a toggle (manual). The MCCB has a rated operating voltage (Ue) of 690 V, a rated impulse voltage (Uimp) of 8 kV, and a trip current rating of 150 AT. Its frame current rating is 150 AF, and it has a short circuit breaking rating of 25kA at 240Vac, 18kA at 480Vac/480Y/277Vac, 14kA at 600Vac/600Y/347Vac, and 20kA at 250Vdc, all according to UL489 standards. The trip unit type is an electronic Micrologic Standard 3.2S (LSI) with no display, and it falls under utilisation category A. | Telemecanique Sensors | $712.50 | Quick Quote | ||
LGF36600U31XAE Square D by Schneider Electric LGF36600U31XAE is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT LGF sub-range. It features a factory-installed 1A/1B (1NO+1NC) auxiliary switch (low level) in a PowerPact L-Frame, with a 600 Micrologic 3.3 (LI) 3P 600A configuration. This MCCB operates at a rated current of 600A and has a rated insulation voltage (Ui) of 750 V, with an AC rated voltage of 600Vac 600Y/347Vac. It is designed for individual unit mount on plate, with dimensions of 382 mm in height, 153 mm in width, and 171 mm in depth. The degree of protection is IP40, and it operates via a toggle (manual) mechanism. Protection functions include long-time protection (L) adjustable from 0.3 to 1 x In (50A to 150A) and instantaneous protection (I) adjustable from 1.5 to 11 x In (900A to 6600A). The rated operating voltage (Ue) is 690 V, with a rated impulse voltage (Uimp) of 8 kV. The trip current rating is 600 AT, with a frame current rating of 600 AF. Its short circuit breaking rating varies from 65kA at 240Vac to 20kA at 500Vdc, according to UL489 standards. The trip unit type is an electronic Micrologic Standard 3.3 (LI) with no display, and it falls under utilisation category A. Connection is facilitated by a terminal nut kit for fixed busbar connection on both line and load sides. | Telemecanique Sensors | $1,773.94 | Quick Quote | ||
Molded Case Circuit Breakers (MCCB)
General Guide & Overview
Understanding the dynamics of electrical safety necessitates a thorough knowledge of molded case circuit breakers, commonly known as MCCBs. They play a crucial role in the protection against electrical hazards, including fires and shocks. But, what is a molded case circuit breaker? This protective device is meticulously crafted to interrupt current flow in the event of excessive loads, ensuring the sanctity of the electrical systems it safeguards. The significance of MCCBs can't be understated, considering they follow stringent guidelines set by the National Electrical Code® (NEC®) and align with the requirements of UL 489 standards.
Diving into what is an MCCB reveals a versatile range of products. From ground fault to arc-fault circuit interrupters and from devices catered to photovoltaic systems to robust surge-protective devices, the MCCB's adaptability is as extensive as its utility. But how does a molded case circuit breaker work? Whether utilizing classic thermal magnetic trip mechanisms or sporting advanced electronic units, MCCBs are engineered to detect and respond to thermal overloads, short circuits, and ground faults with precision. Their distinct features, prescribed by UL standards, ensure that these indispensable components fulfill their protective role in diverse applications with efficacy and reliability.
Understanding Molded Case Circuit Breakers (MCCB)
Exploring the intricate realm of electrical safety, it's essential to address a common inquiry: what is the difference between MCB and MCCB circuit breakers? Minature Circuit Breakers (MCBs) are suitable for domestic applications, offering protection to individual circuits. In contrast, Molded Case Circuit Breakers (MCCBs) serve a more robust purpose in industrial environments. This distinction is pivotal in electrical engineering, impacting how we safeguard our systems from overloads and faults.
The function of an MCCB within electrical frameworks is profound. Its core responsibility lies in integrating a temperature-sensitive element with an electromagnetic component. Together, these create a robust defense mechanism against excessive current flows. Such integration is precisely executed to promptly interrupt the circuit when potential dangers like thermal overloads, short circuits, and ground faults emerge.
Evaluating MCCB vs MCB, one can recognize the vast capabilities of MCCBs to handle higher power systems and a broader range of current ratings. The MCCB's construction is a matrix of precision-engineered mechanisms designed to detect abnormal currents. A bimetallic strip within the breaker warms up under excessive current flow, bending to instigate a trip action - a fundamental aspect of what is the MCCB function.
Imagine a scenario where high currents surge through a system due to an insulation failure. Here, the MCCB's electromagnet responds instantaneously, actuating a trip and consequently mitigating the risk of damage. The difference between MCB and MCCB becomes apparent in their response to these events, emphasizing the latter's suitability for comprehensive protection in more demanding electrical infrastructures.
The evolution of MCCBs embraces the incorporation of ground fault protection directly into the trip unit, highlighting their advanced capabilities. Embracing such advancements ensures that MCCBs remain at the forefront of circuit protection technology. Fully grasping the mccb in electrical systems means recognizing its essential role in maintaining the integrity and safety of today's complex power networks.
Molded Case Circuit Breakers (MCCB) in Electrical Systems
The protection and management of electrical systems are pivotal, and when dissecting the intricacies of these systems, one frequently encounters the comparison of mcb vs mccb. The distinction between the two is substantial, with MCCBs bearing a design for higher capacity and adaptability, a clear choice for comprehensive system protection. A crucial feature, the mccb function, resides in its ability to safeguard against various fault conditions while supporting multiple applications, from residential complexes to grand scale industrial layouts. In essence, understanding what is molded case circuit breaker invites recognition of a device formed to interrupt excessive currents swiftly, thereby preserving the integrity of the electrical circuit it serves.
At the core of their operation, MCCBs are engineered to be resilient. They exhibit a multitude of trip characteristics suitable for unique environments and load profiles. Whether it be a surge within a domestic dwelling or an industrious leap in an assembly line, the MCCB interrupts these irregular currents promptly to avert probable mishaps. This dynamic performance, teamed with their adaptability, underscores the importance of mccb application in diverse electrical systems, affirming their role as indispensable components in modern power management and safety frameworks.
Advancements in technology have ensured that MCCBs are not left behind. Their proficiency now extends to safeguarding systems integrative of renewable energies, such as photovoltaic setups, and those reliant on novel power storage solutions. Given their inherent modular structure, these circuit breakers provide flexibility and reliability, reflecting their readiness to evolve in step with electrical advancements. The divergent milieu of electrical environments finds a common sentinel in MCCBs, echoing their universal presence and paramount significance in electrical safety.
FAQ
What is a Molded Case Circuit Breaker (MCCB)?
An MCCB is a type of electrical protection device that can automatically cut off electrical power when it detects an overload, short circuit, or ground fault. It's designed to protect an electrical circuit from damage caused by excess current resulting from an overload or a short circuit.
How does a Molded Case Circuit Breaker work?
An MCCB functions by combining thermal and magnetic trip elements. The thermal component, usually a bimetal strip, responds to prolonged overload conditions by bending and triggering the trip mechanism, while the magnetic element activates almost instantly in severe short-circuit conditions to protect the circuitry.
What is the difference between MCB and MCCB?
The key difference lies in their capacity and applications. MCBs, or Miniature Circuit Breakers, are designed for lower power applications and typically offer lower interrupting current ratings. MCCBs, on the other hand, are suitable for higher power applications and can handle higher current ratings, making them ideal for industrial or commercial installations.
What does MCCB stand for?
MCCB stands for Molded Case Circuit Breaker, which refers to the type of casing that encapsulates the internal components, providing a robust barrier against mechanical and environmental factors.
What is the function of an MCCB?
The primary function of an MCCB is to provide protection by interrupting the flow of electricity in the event of an overload or a fault condition, such as a short circuit or a ground fault. It safeguards electrical circuits by preventing damage to equipment and reducing the risk of electrical fires or shocks.
What are the applications of MCCBs in electrical systems?
MCCBs are versatile and are used in a variety of electrical systems ranging from residential to industrial settings. They are essential in environments where high-rated currents are used and are ideal for circuit protection in power distribution networks, such as transformer protection, backup protection, and capacitor bank protection.