Mersen Ferraz Shawmut, a brand of Mersen, has been innovating a product line of fuse technology with over 129 years of experience, ideal for transportation, electronics, energy, chemical and pharmaceutical & process industries. Mersen is a well-known innovator in low voltage fuse gear and cylindrical fuses that meet French standards. The company offers components with reduced power losses and space savings. Read More
Ul-listed, fast-acting fuses ideal for integrated circuits, transformers and appliances with specific current-limitation capabilities. Highly sensitive to current changes and blow within seconds of exposure to overloads and short circuits. Available in ceramic or glass body options.
Include time-delay and fast-acting fuses in glass / ceramic bodies for circuit protection. Time-delay fuses prevent nuisance from blowing in temporary inrush currents, while fast-acting fuses respond instantly to short circuits within seconds. UL-listed & CSA-certified.
Feature time delay functionality and improved cycling ability for frequent motor start / stops without nuisance fuse opening. Offer a rejection-style design to prevent replacement with different dimension fuses and high-grade silica filler to allow fast arc quenching.
Ul-listed, Class G fuses suitable for protecting appliances, lighting and heating systems. Feature a rejection-style design to prevent inter-changeability with other fuses and fibreglass bodies for dimensional stability.
General-purpose fuses ideal for applications where short circuits are not more than 10000 amperes. Feature knurled bushings for quick assembly / disassembly, die-cut renewable links for quick replacement and rugged construction for superior durability.
Time-delay fuses for tolerating temporary inrush currents without nuisance blowing during startup loads in motors and transformers. However, units open to disconnect the circuit when exposed to sustained loads or short circuits. UL-listed & CSA-certified.
Feature 4-second time delay characteristics to accommodate temporary inrush loads in motors or transformers without opening the contacts while allowing the fastest operation under short circuit conditions to prevent damage. Durable fibreglass construction. UL-listed and CSA-certified.
A2K-R / A6K-R Series fuses deliver a high degree of current limitation in applications like feeder circuits and backup protection having low peak let-thru current. Offer a fibreglass body to provide maximum stability in harsh environments and an easy-to-read imprint label for quick identification.
Current-limiting fuses for overcurrent protection of motors, branch circuits, transformers & service entrance equipment. Feature time-delay characteristics to safely handle harmless starting currents and rejection-style design to prevent replacement errors. UL-listed & CSA-certified.
Designed to protect loadcentres, panelboards, circuit breakers and switchboards from overcurrent situations. Feature extremely high current limitation for low peak let-thru current, small physical size for maximum design versatility and melamine bodies for superior dimensional stability.
DCT Series, fast-acting midget fuses used in DC traction equipment, multimeters and photovoltaic systems. Designed to interrupt low-fault currents to prevent damage against overcurrents. Feature fibreglass body for durability and compact design for easy mounting.
Finger-safe units for use with Class CC & midget style fuses for protecting transformers, lighting systems & branch circuits against overcurrent occurrences. Feature a rejection-style design that prevents non-matching fuse installation. Include DIN rail mounting for quick connection with devices.
Ideal for direct mounting of cylindrical fuses to fuse blocks, holders and disconnect switches. Tin-plated finish maintains low-resistance electrical contact with the fuse. Ideal for new installations or replacing broken or worn clips.
Designed to snap securely to individual fuses to cover exposed live clips and terminals and reduce accidental contact or electrical interference. Allow compatibility with Class G, H, J, R, K, CC or midget style fuses and include an orange indicator to provide the status of an open fuse.
UltraSafe Series fuse holders with screw-less, spring-pressure wire termination technology offering IP20 finger-safe protection to absorb shocks & vibrations for keeping connections secure. Ideal for use in power control, power distribution & power electronics. UL-listed & CSA-certified.
Designed for protecting electrical devices against damage due to high inrush currents. Feature ceramic bodies to provide high breaking capacity, silver-plated contacts for higher conductivity and reduced size for mounting versatility. Ideal for use in motors and transformers.
Ideal for installation on fuse ferrules or blades that can accommodate lower-rated fuses to fit higher-rated fuse blocks, holders and switches. Offer a unique design that allows a strong electrical contact for proper fuse operation. UL-listed and CSA-certified.
Ul-listed, high-speed fuses ideal for protecting small inverters, DC drives, UPS and electrochemical rectifiers during a fault condition. Unique design reduces peak let-thru current, arc voltages and high-potential fault currents in extremely short times, providing complete protection.
Current-limiting fuses intended for medium voltage motors and motor controllers to protect against short circuit conditions. Include E-rated fuses for general purpose use, R-rated for backup applications and PT fuses for protection of potential transformers.
Protecting against fault currents in industrial branch circuits and motor circuits. Colour-coded to prevent the installation of a mismatched fuse and have a window that allows easy monitoring of the fuse status. Available in time-delay and fast-acting mechanism variants.
Used in new electrical installations or as replacements for blown fuses while protecting against overcurrent. Contain a metal strip / wire that melts to disconnect the circuit on exposing to greater current loads. Selected models offer bolt-in mounting for quick connection / disconnection.
Ideal for supplement protection of lighting devices, a solenoid, motors and more. Offer 12-second time-delay capabilities for circuits with high inrush currents, allowing the contacts to open and interrupt the current flow.
Designed to easily splice cables into multiple secondary circuits or provide a fixed junction tap-off point. Feature IP20 finger-safe enclosures, eliminating the need for special covers or custom Plexiglas sheets to protect the panel. Allow mounting onto a DIN rail to provide quick installation.
Include touch-safe covers and end barriers to protect circuits from accidental touch and prevent terminal blocks from falling off DIN rails & channels.
The M-Series load break switches are ideal for switching the power supply on or off for complete electrical isolation during high current situations. Feature a modular design that allows easy installation and silver-plated contacts for protection against corrosion.
Feature TPMOV (thermally protected metal oxide varistor) technology to prevent the surge protection devices (SPDs) against damage caused by overvoltage breakdown and overheating. Include a visual / remote indicator that indicates the status of metal oxide discs when disconnected by an arc shield.
Crimped or bolted cables for instantly isolating faults while increasing the reliability of service entrance and distribution runs. Feature moulded rubber boots for insulation and protection, fibreglass construction for durability and stamped label for permanent identification.
Equipped with double-break contacts per hole, ensuring complete isolation of the fuse when the switch is in the OFF position. Provides complete short circuit protection when used with Mersen's Class CC, J or L-type fuses. Available in NEMA 4X non-metallic and stainless steel enclosures.
The brand's fuses catalogue includes glass & ceramic fuses, cable protectors and Class CC fuses. The brand's fast-acting fuses provide a range of applications with top-notch current-limiting protection. Their distinctive dimensions prevent the replacement of other fuses with lesser interrupting ratings, voltage ratings or current-limiting capacity. They feature ceramic or glass construction to protect electronics & appliances. Mersen Ferraz Class CC time delay fuses feature a fiberglass body to ensure dimensional stability in harsh industrial settings. They have a rejection-style design to prevent replacement errors and Time-delay for motor starting inrush currents without bothersome opening. Choose from a wide range of these fuses along with ceramic or glass fuses available in fast-acting and time delay speeds on Raptor Supplies.
Mersen Ferraz's MPNs cross individual references to the equivalent Bussmann model numbers. So, if you are looking for competitor items that are either out of stock or obsolete, chances are Raptor Supplies has the equivalent Mersen Ferraz fuses available. Customers can also cross-reference most products using the last 5 digits of the model numbers.
Mersen Ferraz fuses are small and lightweight in size and therefore require careful packaging as some products might get damaged while shipping. Hence, they are delivered by courier shipment and not air freight for minimum downtime.
According to IEC specifications, modular fuse holders are finger-safe to an IP20 level of protection, including fuse replacement (with the flick of a finger). There are 1, 2, 3, and 4 pole modular fus...Read more
The MULTIBLOC Series includes NH fuse switch disconnectors, designed for bottom fitting / panel installation. They are available in triple pole & quadruple pole units with touch protection IP 20. Thes...Read more
They offer a high degree of protection during installation on bus bars in triple pole arrangements. These units are suitable for bottom / top cable terminal connections and are designed for NH fuse li...Read more
These current-limiting fuse-links, which are used with other equipment, stop fault currents before they peak. Current limiting fuses with high breaking capacities are available from Mersen, providing ...Read more
These current-limiting fuse-links stop fault currents before they peak. Current limiting fuses with high breaking capacities are available from Mersen, providing the strongest defence against short circuit current. These fuse-links are expertise in high voltage applications delivering reliability & safety with high breaking capacity, high current limitation, low switching voltage and non-ageing benefits.
The North American headquarters of Ferraz Shawmut, a multinational corporation, is now known as Mersen.
In 1944, the German DIN standard 43620 gave definitions for NH fuses, commonly referred to as DIN NH blade fuses or NH knife blade fuses. They serve as all-purpose fuses to safeguard conductors.
Make sure the fuse you choose has a rating voltage higher than the circuit voltage. The highest voltage at which a fuse can successfully stop an aberrant current is its rated voltage.