Accessories Mersen

The SPD Type 2+3, designated for use in surge protection applications, is part of the STP T23 20 series. This device is engineered to handle a maximum discharge current of 20kA per phase, meeting the requirements of EN/IEC 61643-11 for effective voltage surge suppression. It serves as the final protection stage, ideally positioned close to the equipment it safeguards, and works in conjunction with upstream Type 2 devices such as the STP T2 40 SPDs. With a nominal operating voltage rating of 120V and a combined voltage pulse of 10kV, this SPD ensures a high level of protection against voltage surges. Its response time is 25 ns, allowing for quick reaction to transient events. The unit features a maximum back-up fuse rating of 63A gG and is designed for AC systems with a configuration suitable for TT and TNS systems. Constructed from PA66 CT1 housing material, the device is robust and complies with stringent safety standards. It supports both rigid and stranded wire types, accommodating sizes from 6 to 35mm² for rigid and 6 to 25mm² for stranded connections.

The SPD Type 2+3, 20kA is designed to effectively discharge voltage surges while ensuring a high level of voltage protection, adhering to EN/IEC 61643-11 standards. It serves as the final protection stage in electrical panels already equipped with upstream Type 2 protection devices, such as the STP T2 40 series.With a maximum discharge current of 20kA per phase and a nominal discharge current of 10kA per phase, this device is engineered for robust surge protection. Its combined voltage pulse rating of 10kV (1.2/50μs) ensures effective handling of transient voltage events. The device operates at a nominal voltage rating of 230/277 V and features a maximum continuous operating voltage (Uc) of 320 V.The SPD is constructed with a housing made of PA66 CT1 material, rated V-0, and is equipped with a back-up fuse rated at 63 A gG to enhance its protective capabilities. The torque rating for installation is set at 35.4 lb-in, and it provides a short circuit withstand rating (Isccr) of 25 kA, ensuring the safety and reliability of the system.For optimal performance, installation should be as close as possible to the protected equipment, facilitating improved response times of 25 ns and combined discharge voltage of ≤1.4 kV at L-Pe. The device accommodates rigid wire sizes from 6 to 35 mm² and stranded wire sizes from 6 to 25 mm², supporting various configurations such as TT and TNS.

The Surge Trap STMT Series offers low voltage surge protection suitable for both AC and DC applications. Compliant with UL 1449 4th Edition standards, these devices are designed to protect sensitive equipment such as control systems, power supplies, and communication networks. Operating within a voltage range of 12-230 VAC and 24-365 VDC, the device includes a slim DIN-rail mountable design ideal for limited spaces. It features a maximum discharge current of 6kA and a nominal discharge current ranging from 3kA to 10kA. Additionally, this model incorporates an optional dry contact for remote monitoring capabilities. Its robust design withstands operating temperatures from -40 °C to 80 °C, ensuring reliable performance in diverse conditions. Key specifications include a torque rating of 6.2 lb-in and a response time of 25 ns. The Surge Trap STMT Series is constructed with a PC+GF housing material, ensuring durability and compliance with safety standards.

The SPD Type 2+3, rated at a maximum discharge current of 20kA per phase, is engineered to effectively discharge voltage surges while ensuring a high level of voltage protection as per EN/IEC 61643-11. It serves as the final stage of protection in electrical panels equipped with upstream Type 2 protection devices, such as the STP T2 40 SPDs. For optimal performance, installation should occur as close as feasible to the protected equipment.This device supports nominal operating voltages of 230/400V and 277/480V, and features a backup fuse rating of 63 A gG. The surge protective device is classified under Type 2+3/Class II+III standards, providing a response time of 25 ns and a short circuit withstand rating of 25 kA. Notably, the device features a combined voltage pulse of 10 kV and a maximum discharge voltage rating of 320 V, with a torque rating of 35.4 lb-in.The housing is constructed from PA66 CT1 material, meeting V-0 flammability standards, and is compatible with rigid wires ranging from 6…35mm² and stranded wires from 6…25mm². This SPD is part of the Surge-Trap® Pluggable STPT23 Series - 20kA, designed for AC applications, ensuring reliability and compliance in surge protection.

The SPD T1+2 5 PV is specifically crafted for photovoltaic applications, meeting both EN 50539-11 and IEC 61643-31 standards. This device is engineered to handle lightning currents with a rating of 5 kA (10/350 μs) and protects against induced voltage surges rated at 40 kA (8/20 μs). Its high short-circuit withstand allows operation without the need for a back-up fuse, thanks to Mersen’s advanced dynamic thermal disconnection system.With a nominal operating voltage of 1060 Vdc, this device is suitable for both large-scale and rooftop PV systems. The surge protector features a maximum operating temperature of 85 °C and a minimum of -40 °C, ensuring reliable performance in various environmental conditions. Its response time is rated at a swift 25 ns, allowing for quick reaction to surge events.Additionally, the SPD T1+2 series includes multipole configurations for systems with multiple MPPT inverters, enhancing its versatility in diverse PV setups. The device is compatible with rigid wire types ranging from 6 to 35 mm² and consists of five poles, making it a robust choice for surge protection in photovoltaic installations.

The SPD Type 1+2 is a device series intended for the protection against voltage surges and lightning currents, adhering to the standards of EN/IEC 61643-11. This model, featuring a discharge capacity of 25kA per phase and a maximum discharge current of 100kA per phase, serves as a primary protection measure in power supply panels exposed to atmospheric conditions. Configured with a 2-Pole system and designed for TNS, this surge protective device can operate within voltage ratings of 230/400V and is equipped with a back-up fuse rated at 315 A gG. Its operational temperature range is significant, with a maximum of 80 °C and a minimum of -40 °C. The housing is constructed from PA66 CT1, ensuring durability. With a torque rating of 35.4 lb-in and a short circuit withstand rating of 25 kA, the SPD Type 1+2 is an essential component for installations that include external lightning protection systems. The product is part of the Surge-Trap® Pluggable STPT12 Series - 25kA and offers rigidity suitable for wire types ranging from 6…35mm² for rigid wires to 6…25mm² for stranded wires. The nominal operating voltage rating is confirmed at 230 / 400 V, with a rated voltage Uc L-Pe of 275 V and a maximum transient voltage Up At In L-Pe of ≤1.5 kV.

The A15QS Amp-Trap® Form 101 high-speed fuses are specifically engineered for the protection of semiconductor devices operating at 150VAC/DC. With a compact design, this fuse variant is suitable for applications where space is restricted.Operating at a maximum temperature of 80 °C and a minimum storage temperature of -25 °C, it ensures reliable performance across various conditions. The fuse features an impressive breaking capacity of 200 kA, ensuring safety and effectiveness in critical applications.Key specifications include a diameter of 1.13 inches and a connection terminal composed of tin-plated brass, designed for bolted mounting. The fuse's body is made from GMG insulating material, ensuring durability and compliance with standards.

The A15QS high-speed semiconductor fuse operates at a maximum voltage of 150VAC/DC and is rated for 900A, making it suitable for the protection of sensitive semiconductor components. Its compact design is particularly advantageous in applications with space constraints.Characterized by a maximum operating temperature of 80 °C and a minimum storage temperature of -25 °C, this fuse is built to withstand demanding environments. Its high-speed characteristics ensure rapid response to overcurrent conditions, thereby enhancing system protection.The fuse features a diameter of 1.13 inches and utilizes a body insulating material composed of GMG. The connection terminals are made from tin-plated brass and are of the blade type, facilitating easy installation with bolted mounting options.This product is part of the Amp-Trap® A15QS series, known for its reliability and performance in protecting electrical circuits.

The NH fuse-link system is categorized as a plug-in fuse system that includes a fuse base—potentially with terminal covers and phase barriers—and a fuse-link featuring blade contact. It incorporates a fuse-link replacement device, specifically the LV HRC fuse puller. Due to the system's design, which does not ensure non-interchangeability of rated current, it mandates handling by qualified professionals. Type 'gG' NH fuse-links exhibit a full range breaking capacity, ensuring protection for both cables and equipment. These fuse-links can effectively interrupt current surges from their minimum fusing current up to their maximum breaking capacity, allowing them to serve as standalone protection measures. They also safeguard electrical devices and industrial setups against the electrodynamic impacts of high short-circuit currents.

The A50QS Amp-Trap® Form 101 fuse is designed to enhance the performance of semiconductor fuses in alignment with evolving equipment demands. It integrates advanced protection capabilities, including a lower I²t rating that safeguards equipment more effectively, an extended lifespan under cyclic loading, and reduced watt loss. This model is particularly suited for the protection of dynamic solid-state devices, such as motor drives, inverters, and uninterruptible power supplies (UPS). The fuse operates within a maximum temperature of 80 °C and is capable of handling rated voltages of 500V AC and 500V DC. With a breaking capacity of 63 kA, it ensures reliable protection against overloads and faults.Constructed with a diameter of 1.5 inches, the A50QS features a body insulating material made of GMG and tin-plated copper for its connection terminals, which are designed for bolted mounting. This product, designated as A50QS IL, represents the optimal choice for safeguarding sensitive electronic equipment in various industrial applications.

The NH fuse-link gG is designed for use in plug-in fuse systems, comprising a fuse-base that may include terminal covers and phase barriers, along with a fuse-link featuring blade contact and a fuse-link replacement device (LV HRC fuse puller). Due to the system's design, which does not ensure non-interchangeability of rated current, installation and handling must be performed by qualified professionals.These fuse-links are classified as full range breaking capacity devices, capable of protecting cables and equipment by interrupting any current surge from the lowest fusing current up to their maximum breaking capacity. They offer essential protection for electrical devices and industrial setups against the electrodynamic effects of high short-circuit currents, ensuring operational safety.The NH fuse-link is rated for 6 A with a maximum voltage of 500 V AC and 250 V DC. The power dissipation at the rated current value is 1.6 W. Manufactured with a ceramic body insulating material and silver-plated copper for connection terminals, it is designed for mounting via a clip. This specific model is suitable for sizes NH0 and complies with the gG speed characteristic.

The NH fuse-link system is categorized as a plug-in fuse system, consisting of a fuse-base, which may include terminal covers and phase barriers, along with a fuse-link equipped with blade contacts and a replacement device (LV HRC fuse puller). Due to the system's design, which does not ensure non-interchangeability of rated currents, it must be managed by qualified personnel.The type 'gG' NH fuse-links are characterized by their full range breaking capacity, providing essential protection for cables and equipment. They are capable of interrupting current surges from the lowest fusing current up to their rated breaking capacity, and can function independently as protective devices. Furthermore, they safeguard electrical apparatus and industrial installations against the electrodynamic impacts of extremely high short-circuit currents. Rated Power Dissipation values for these Mersen NH fuse-links at 400VAC are maintained below the maximum limits set by the IEC 60269 standard.

The NH fuse-link system is a plug-in solution comprised of a fuse base, which may include terminal covers and phase barriers, along with a fuse-link featuring blade contacts. This particular design necessitates handling by a qualified professional due to its inability to guarantee non-interchangeability of rated current. The gG type NH fuse-links provide a full range breaking capacity, ensuring protection for cables and equipment against current surges, from minimal fusing currents up to their specified breaking capacity.These fuse-links are capable of interrupting high short-circuit currents, thereby safeguarding electrical devices and industrial configurations from electrodynamic effects. With a power dissipation of 3W at the rated current value, the product operates efficiently within a rated voltage of 500V AC and 250V DC. The body, constructed from ceramic, is designed for durability, while the connection terminal is made from silver-plated copper to enhance conductivity. This fuse-link is tailored for size NH1 and mounts via a clip mechanism.

The cylindrical fuse-link aM, with a size of 10x38, is designed for use in electrical distribution circuits and various industrial applications. This fuse-link operates at a rated voltage of 500VAC and a nominal current of 10A, ensuring protection for electrical devices against high short-circuit currents. With a breaking capacity of up to 120 kA, it effectively limits high currents, thus safeguarding equipment from damage. The fuse-link features a ceramic body and silver-plated copper terminals, ensuring durability and efficient conductivity. It is classified under the partial range fuses, specifically tailored for installation switchgear in motor circuit currents. The technology behind this product facilitates reliable performance, while its visual indicator allows for easy monitoring of operational status.

The NH fuse-link aM is designed for use in plug-in fuse systems, featuring a ceramic body and silver-plated copper connection terminals. Operating at a rated voltage of 690VAC and an ampere rating of 160A, this fuse-link is integral to ensuring safe electrical performance. The system includes a fuse base which may come with terminal covers and phase barriers, along with a fuse-link replacement device known as the LV HRC fuse puller.With a breaking capacity of 80 kA under maximum conditions, the NH fuse-link effectively manages potential fault currents. It dissipates 12W of power when operating at its rated current, ensuring reliable protection in various applications. Due to the design's potential interchangeability of rated current, installation and handling should be conducted by qualified professionals. This product is part of the NH fuse-links aM range, specifically size 0, ensuring compatibility within the specified series.

The Class J High-Speed fuse (HSJ) is designed to combine the low I2t characteristics of semiconductor fuses with the performance requirements of UL Listed Class J fuses. It meets the National Electrical Code (NEC) specifications for branch circuit protection while providing a very low I2t to safeguard power semiconductors including diodes, SCRs, GTOs, and SSRs.With a rated voltage of 600 V AC and 500 V DC, the fuse supports an ampere rating of 150 A. The high-speed characteristic ensures quick response in fault conditions. The fuse is mounted using a clip and features a breaking capacity of 200 kA, making it suitable for various applications. The blade terminal connections are constructed from brass, and the body is made of GMG insulating material, ensuring durability and compliance with ROHS standards.

The cylindrical fuse-link gG, designated as size 22x58, is rated for a voltage of 500VAC and a current of 125A. It is specifically designed for use in electrical distribution circuits and various industrial applications. The fuse-link features a ceramic body and silver-plated contacts, ensuring robust electrical connections.These fuse-links are utilized for the protection of cables, motors, and low-voltage networks. They effectively limit and disconnect unacceptable overcurrents and short-circuit currents, safeguarding electrical equipment from the dynamic effects of high short-currents. The integrated striker activates an auxiliary contact, enhancing operational safety and functionality. This product line, identified as Ferrule fuse-links 22x58 gG for 500 to 690VAC, is engineered to provide reliable performance under demanding conditions.

The Size 70 type PA plain blade fuse, rated at 100 A and designed for 1250 VAC, offers enhanced performance tailored for modern power conversion systems. The Protistor® fuse-links are available in various configurations, ensuring adaptability in equipment design.These ultra-fast acting square body fuse-links effectively safeguard semiconductor devices such as diodes, thyristors, GTOs, and IGBTs. Constructed with pure silver die-cut elements embedded in solidified sand, they are designed to optimize arcing characteristics, resulting in a lower I²t and high interrupting rating of 126 kA.Furthermore, all contact surfaces feature silver plating, and the hardware is non-magnetic, ensuring reliability in operation. Each fuse-link can optionally be equipped with a low voltage trip-indicator, which can activate a field mountable microswitch for enhanced functionality. The product line adheres to international standards, with a rated voltage of 1250 V (IEC) and 1300 V (UL), and demonstrates significant reductions in volume and weight, contributing to a power dissipation of 30 W at rated current.

The D fuse-system represents the initial generation of screw fuse systems compliant with the German DIN standard, remaining prevalent in various installations. This system is particularly suited for low voltage distribution units where non-trained users are permitted to change fuse-links. The D fuse range includes sizes NDZ, DII, DIII, DIV, and DV, with D fuse-links 'gG' serving to protect cables and power lines. These fuse-links effectively control and disconnect excessive overcurrents and short-circuit currents, adhering to their nominal breaking capacity. Additionally, they provide safeguarding for equipment and installations against the dynamic effects of substantial short-circuit currents.Constructed from ceramic insulating material, the DII fuse base supports an ampere rating of 25 A and is rated for voltages up to 500 V AC and 500 V DC. The device features a single-pole configuration and is installed using a screw mounting method.

The NH fuse-link gG is a critical component in plug-in fuse systems, operating at a rated voltage of 690VAC and handling a current of 355A. This device is constructed with a ceramic body and features silver-plated copper connection terminals. It is classified as a type 'gG' fuse-link, indicating its full range breaking capacity, which allows it to interrupt current surges from minimal fusing levels up to its maximum breaking capacity of 120 kA. The design ensures that it can provide protection for electrical devices and industrial systems against the electrodynamic effects of high short-circuit currents.Installation of the NH fuse-link should only be performed by qualified professionals due to the non-interchangeability of rated currents within the system. The NH fuse-link gG is compatible with various fuse bases and may include additional components such as terminal covers and phase barriers. It is essential for maintaining the safety and reliability of electrical installations.