Cables & Connectivity Mersen

The NH system, classified as a plug-in fuse system, includes essential components such as a fuse-base, which may feature terminal covers and phase barriers, along with a fuse-link that incorporates blade contact. For safe operation, it is imperative that a qualified professional manages the system due to the inability to ensure non-interchangeability of rated current. These type aM NH fuse-links serve a critical role in protecting motor circuits, demonstrating strong current-limiting capabilities with minimal power losses. They effectively interrupt fault currents ranging from 6.3 times the rated current (In) up to their maximum breaking capacity, making them suitable exclusively for short-circuit protection. Notably, these fuse-links should be used in conjunction with additional switchgear to provide comprehensive overload protection. The rated current of these fuse-links can be aligned with the motor's nominal current, ensuring appropriate compatibility and performance.

The fuse has an exceptionally high breaking capacity, suitable for protecting power semiconductors according to the IEC standards 60269-1 and -4, with a voltage rating of 690 V and current ratings ranging from 12 to 90 A in the gR class. Additionally, it provides comprehensive overload protection and safety enhancements while enabling selective coordination with all aR class fuses rated at 100 A per VDE 636-23 and IEC 60269-4.Connections are compliant with both German standard DIN 43653/00C and British standard BS88-4. The fuse features a bolt mounting system and is constructed from ceramic insulating material. Its specifications include an ampere rating of 45 A, a breaking capacity of 200 kA at rated voltage, and power dissipation of 11.5 W at the rated current. This product is UL Recognized.

The NH fuse-links aM are integral components of plug-in fuse systems, consisting of a fuse base, which may include terminal covers and phase barriers, along with a fuse-link featuring blade contacts. A fuse-link replacement device, such as a low-voltage HRC fuse puller, may also be utilized.Due to the nature of their design, these fuse-links require handling by qualified professionals to ensure safe operation. The aM type NH fuse-links are characterized by their partial-range breaking capacity, specifically engineered for motor circuit protection. They exhibit strong current-limiting properties with minimal power losses, effectively interrupting currents of up to 6.3 times the nominal current (In) until reaching their maximum breaking capacity. Thus, they are exclusively suited for short-circuit protection and must be paired with additional switchgear to guard against overload conditions.These fuse-links can accommodate a rated current matching the motor's nominal current, and their specifications include sizes ranging from 000 to 3, compliance with CE standards, and construction materials such as copper and silver-plated contacts within a ceramic body. They adhere to various standards, including DIN 57636 Part 201 and IEC 60269-1 and -2.

The Size 000 aR Fuse-Link is designed for high-performance in power conversion applications, adhering to the DIN 43620/00 standard for global compatibility with NH modular fuse-holders and fuse switch disconnectors. This fuse-link offers essential protection for semiconductor devices including diodes, thyristors, GTOs, and IGBTs.Constructed with pure silver, the die-cut elements are embedded in solidified sand to optimize arcing characteristics, achieving a low I²t value and a high interrupting capacity of 80 kA. The rated voltage is 690 V AC according to IEC standards and 700 V AC as per UL specifications. The fuse-link has a melting I²t of 110 A²s and a clearing I²t at rated voltage of 630 A²s.Additionally, the product features a ceramic insulating body and is equipped with silver-plated contact surfaces, ensuring durability and reliability. A low voltage trip-indicator can be integrated, which facilitates the operation of a field-mountable microswitch. The mounting type is clip, and the power dissipation at rated current is 9.7 W.

The cylindrical fuse-link gG, measuring 14x51 mm, is designed for use in electrical distribution circuits and various industrial applications with a rated voltage of 500VAC and an ampere rating of 20A. This variant includes a striker, which activates an auxiliary contact for enhanced functionality.Constructed with a ceramic body and silver-plated copper terminals, this fuse-link effectively limits and interrupts unacceptable overcurrents and short-circuit currents, ensuring protection for cables, motors, and low-voltage networks. The fuse-link's maximum breaking capacity reaches up to 120 kA, providing robust protection against the dynamic effects of high short-currents.In addition, it features a power dissipation of 2.75 W at its rated current, making it suitable for various applications where reliable performance is crucial. The body is designed for clip mounting, facilitating straightforward installation in compatible systems.

The fuse operates at a rated voltage of 250 V and is designed in accordance with IEC standards 60269-1 and -4. It features an extremely high breaking capacity, making it suitable for protecting power semiconductors. The device adheres to the gR class as per VDE 636-23 and IEC 60269.4. This specific design does not include a trip indicator.With an ampere rating of 25 A, the fuse has a diameter of 0.73 inches. The clearing I2T at rated voltage is 160 A²s, while the melting I2T is recorded at 30 A²s. Power dissipation when operating at the rated current is 4.8 W. Constructed from ceramic insulating material, this fuse is part of the Protistor® BS88-4 series, size 17x27 aR, and is bolted for mounting.

The cylindrical fuse-link aM, with dimensions of 22.2x58 mm, is rated for 50 amperes at a voltage of 690VAC. These fuses are specifically engineered for safeguarding electrical distribution circuits and various industrial applications. They are constructed with ceramic bodies and silver-plated contacts, ensuring durability and effective conductivity. This fuse-link type is categorized as a partial range fuse, designed to protect electrical devices from damage due to excessive short-circuit currents. It operates by cutting off currents exceeding 6.3 times the nominal current, up to its rated breaking capacity of 120 kA. The aM fuse-links are particularly suitable for use in motor circuit protection, where the nominal current of the fuse can be selected according to the motor's requirements. With a power dissipation of 3.6 watts at rated current, these fuse-links combine efficiency with reliability. The cylindrical shape allows for easy installation via a clip mounting system, making them an integral component in electrical safety systems.

The cylindrical fuse-link aM operates at a rated voltage of 500VAC and a current rating of 125A, suitable for various industrial applications. It features a ceramic body and silver-plated copper terminals, ensuring durability and reliability.These fuse-links are particularly effective in protecting electrical devices from high short-circuit currents, offering a breaking capacity of up to 120 kA. The design allows for interruption of currents exceeding 6.3 times the nominal current, thereby providing crucial protection for installation switchgear in motor circuits.This specific model, with a size of 22x58, is part of the Ferrule fuse-links series, which encompasses ratings for 400, 500, and 690VAC. The technology employed in this product ensures high reliability and performance, making it suitable for critical applications. The mounting method is clip-type, further facilitating installation.

The NH fuse-link system is recognized as a plug-in fuse assembly that includes components such as a fuse-base, which may come equipped with terminal covers and phase barriers, along with a fuse-link featuring blade contacts and a replacement device (LV HRC fuse puller). Given the nature of this system, its rated current interchangeability is not guaranteed, necessitating handling by qualified professionals.Type gG NH fuse-links possess full-range breaking capacity, facilitating protection for cables and electrical equipment. These fuse-links can effectively interrupt current surges from their minimum fusing current to their specified breaking capacity. Consequently, they serve as standalone protection units or can safeguard electrical devices and industrial setups against the electrodynamic consequences of high short-circuit currents.Standards applicable to this device include DIN 57636 Part 201, VDE 0636 Part 201, and IEC 60269-1 and -2, ensuring compliance with recognized safety and performance benchmarks. The body material is ceramic, and the contacts are composed of copper with silver plating. The gG type is specifically tailored for general-purpose applications, with an ampere range spanning from 2 to 800 A.

The NH fuse-link aM, rated at 500VAC and 315A, is designed for use in plug-in fuse systems. This system includes a fuse base, which may contain terminal covers and phase barriers, along with a fuse-link featuring blade contacts. Due to its design, the non-interchangeability of rated current is not guaranteed, necessitating handling by qualified professionals. These type aM fuse-links are characterized by their partial-range breaking capacity, making them suitable for protecting motor circuits. They provide strong current limiting and exhibit low power losses, interrupting currents up to 6.3 times the nominal current (In) and reaching their maximum breaking capacity. Consequently, they are effective for short-circuit protection but should be paired with additional switchgear for overload protection. The rated current of these fuse-links can match the motor's nominal current, ensuring compatibility in various applications. This model features a body width of 52 mm and utilizes ceramic as the insulating material. The connection terminal is made of silver-plated copper, contributing to the reliability of the electrical connection.

The cylindrical fuse-link gG, designed in size 14x51, operates at a rated voltage of 500VAC and a nominal current rating of 6A. This component serves critical functions in electrical distribution circuits and various industrial applications, providing essential protection for cables, motors, and low-voltage networks.With a breaking capacity of up to 120 kA, this fuse-link effectively limits and interrupts unacceptable overcurrents and short-circuit currents. The ceramic body and silver-plated copper terminals ensure durability and reliable electrical connections. Additionally, the integrated striker activates an auxiliary contact, enhancing safety measures in electrical setups.The cylindrical fuse-links are available in multiple sizes and configurations, with this particular model adhering to IEC standards. Its specific design and technology ensure dependable performance within electrical infrastructures.

The NH fuse-link system is categorized under plug-in fuse systems, comprising a fuse-base, which may include terminal covers and phase barriers, alongside a fuse-link that utilizes blade contacts. The system requires handling by qualified professionals due to its design, which does not ensure non-interchangeability of rated currents.Type 'gG' NH fuse-links offer full-range breaking capacity, ensuring protection for cables and equipment. They can interrupt current surges from their minimum fusing current up to their specified breaking capacity, enabling their use as standalone protection devices. These fuse-links further safeguard electrical devices and industrial setups against electrodynamic effects posed by high short-circuit currents.The rated power dissipation for the Mersen NH fuse-links at 400VAC is maintained below the maximum thresholds established by IEC 60269 standards. This fuse-link features a body width of 30 mm and is constructed from ceramic insulating material, with silver-plated copper used for the connection terminals. Its specifications include an ampere rating of 125 A and a power dissipation value of 9.8 W, making it suitable for various industrial applications.