Mersen MPDB Power Distribution Blocks Now Rated for DLO Fine-Strand Wire

Mersen power distribution blocks provide a safe and easy method of splicing cables, splitting primary power into secondary circuits and fulfilling requirements for fixed junction tap-off points. Many part numbers in the miniature, intermediate, and large series of Mersen MPDBs are now rated to accept DLO-type fine-strand wire, allowing you to install flexible conductors. No changes to installation are required.

Mersen MPDB Power Distribution Blocks

Mersen Technical Datasheets

Mersen Surge-Trap® Pluggable DIN-Rail SPD

Surge-Trap® Pluggable Surge Protective Device (SPD) is a no-fuse, fail-safe surge suppressor featuring Mersen’s patented TPMOV® technology inside. The pluggable SPD is UL 1449 Third Edition approved. It is DIN-rail mountable featuring a fail-safe self-protected design, visual indicator and a small footprint. A remote indicator option provides status to critical control circuits. The Surge-Trap Pluggable SPD has a high short circuit current rating and a thermally protected MOV, which eliminates the need for additional overcurrent protection devices.

Features/Benefits:

• Easy installation or retrofit
• DIN-rail mountable
• Fail-safe, self-protected design
• Remote indicator
• Visual indicator
• IP20 finger-safe design
• Small footprint
• No additional over-current protection devices required
• Easy to replace modules
• Two-year warranty

Mersen Surge-Trap® Pluggable DIN-rail SPD

Mersen Technical Datasheets

Mersen HP10NH1 Photovoltaic Fuses

Mersen HP10NH1 photovoltaic (PV) fuse series was designed specifically for photovoltaic output circuit (or array) protection. HelioProtection® HP10NH1 series fuses protect conductors against potential short-circuits in groups of strings. Target equipment includes solar re-combiner boxes, array combiner boxes, sub-combiner boxes and inverter input circuits.

Global acceptance
HP10NH1 fuses are rated up to 1000VDC from 53 to 160A, furnished in a standard NH1 size fuse body. Photovoltaic fuse certifications include pending UL Listing to standard 2579 (due December 2012) and IEC Compliance to standard 60269-6. As an immediate advantage the HP10NH1 can be installed in two standard-length and 1000VDC qualified fuseholders: one is an open fuse-base and one is a base protected against electrical shock.

The lowest power losses in the marketplace
The HP10NH1 offers the lowest power losses in the marketplace, delivering enhanced system efficiencies. The fuses advanced design is also able to withstand aging caused by thermal effects leading to increased reliability of solar photovoltaic installations.


Mersen HP10NH1 Photovoltaic Fuses

Mersen Technical Datasheets

Mersen HPJ Series 1000VDC Class J Fuseholders

Designed specifically for Mersen’s HP6J series of photovoltaic fuses, these fuse blocks are certified for use with 90°C temperature rated conductors, an industry first. Fuseholders are available with box connectors, stud connectors or combination of the two in order to meet various customer requirements. Insulators are either molded glass-filled polycarbaronate or phenolic with verified dielectric strength in excess of 2500V. All fuse clips are made of high conductivity tin-plated copper.

Mersen HPJ Class J Fuseholders

Mersen Technical Datasheets

Mersen HelioProtection UltraSafe Fuseholders

Mersen’s HelioProtection® line of UltraSafe fuseholders delivers the function, safety, and level of circuit protection demanded by PV applications. Mersen specially selected enhanced materials when designing this fuseholder in order to provide the level of reliability and system longevity required under constant temperature fluctuation of typical PV sites while providing the level of electrical insulation required for 1000VDC applications. The touch-safe design and tool-free fuse change-outs increase user safety. Combine with Mersen’s HelioProtection HP6M or HP10M fuses for industry leading PV circuit protection.


Mersen HelioProtection UltraSafe Fuseholders

Mersen Technical Datasheets

Mersen USBB UltraSafe Bus Bar System

Mersen USBB UltraSafe bus bar systems are intended for use with UltraSafe Class CC (USCC) and Midget (USM) fuse holders. The USBB delivers safe and reliable combination of circuits in a compact design. Bus bar systems reduce installation time when compared to wire solutions, offer space savings and deliver touch-safe, shock resistant solutions to panel builders and designers.

Features

• Decrease installation when compared to wire solutions
• Save panel space with compact design and footprint
• Reduce shock hazards with touchsafe cover (included)
• Eliminate excess costs associated with terminal blocks and labor for wire installation
• Increase design flexibility
• Environmentally conscious, RoHS compliant and lead free
• Protective covers available for unused poles

Applications

• UL 508 panels
• Solar string combiner boxes
• Control panels
• Power distribution panels

Mersen USBB UltraSafe Bus Bar System

Mersen Technical Datasheets

Mersen SXDC Non-Fused Disconnect Switches

The new SXDC series of non-fused switches are IEC-rated for 1000VDC for 4-poles in series and 750VDC for 3-poles in series.

The small footprint and low profile allow for a secure mounting in the toughest applications! They are listed to UL98 at 600VDC for “service entrance” applications and are available in 3 or 4-pole configurations. The mounting feet are located on the corners and can swivel to accommodate design variations.

Flexible terminal barriers allow for wire bending.

Highlights

• Front Operation
• Double-break silver-plated contacts
• Clear On/Off indication
• 3 and 4-pole versions available
• Flexible terminal barriers

Ratings

Volts : UL98 rated 600VDC; IEC-rated 1000VDC for 4-pole in series and 750VDC for 3-pole.
Amps : 100A, 200A, and 400A
SCCR : 20kA with A70P fuses

Mersen SXDC Non-Fused Disconnect Switches

Mersen Technical Datasheets

Mersen SX AC Non-Fused Disconnect Switches

The new SX series of non-fused switches have a 40% smaller footprint than their predecessors, and have a lower profile to allow for a secure mounting in the toughest applications! They are listed to UL98 for “service entrance” applications and are available in 3 or 4-pole configurations. The mounting feet are located on the corners and can swivel to accommodate design variations. Flexible terminal barriers allow for wire bending.

Highlights

• Front Operation
• 200kA SCCR
• High horsepower ratings
• Double-break silver-plated contacts
• Clear On/Off indication
• 3 and 4-pole versions available
• Flexible terminal barriers

Ratings

Volts : 600VAC, 250VDC
Amps : 100A, 200A, 400A
SCCR : 200kA with class J fuses

Mersen SX AC Non-Fused Disconnect Switches

Mersen Technical Datasheets

Mersen FSSC Non-Fused Disconnect Switches

The new FSSC series of non-fused switches are considerably less expensive than their predecessors, and have a much smaller footprint. They are listed to UL98 for “service entrance” applications and are available in 3 ampacities, with a snap-on 4th-pole accessory.

Highlights

• Front or side operation via direct or external handle
• 100kA SCCR
• Double-break silver-plated contacts
• Box terminals eliminate need for lugs
• Lock-out / tag-out hasp on switch face
• External handles rated for NEMA 4X and will accept up to 3 padlocks.
• Auxiliary contacts and additional poles can be snapped on without tools

Ratings

Volts : 600VAC
Amps : 30A, 60A, 100A
SCCR : 100kA @ 480V with class J fuses

Mersen FSSC Non-Fused Disconnect Switches

Mersen Technical Datasheets

Mersen FBJX Fused Disconnect Switches

The new FBJX series of fused switches are smaller than their predecessors, have several new features, and are built to last! They are listed to UL98 for “service entrance” applications and have a modular design, which allows for 2, 3, or 4-pole availability. Mersen has beefed up the FBJX’s mounting areas and added separate 14 AWG wire taps for parallel loads like control power transformers and/or surge protection. The gear box has a lock-out, tag-out provision, as well as a test position and can accept up to 2 auxiliary contacts.

This new design is almost 2” narrower than the old style and new box terminals on the 100A mean you won’t need to buy terminal lugs and shrouds!

Highlights

• Front or side operation
• Up to 200kAIC
• Three 14 AWG power taps on both line and load sides
• Fuse pull-out handles on 30A and 60A
• Box terminals up to 100A eliminates the need for terminal lugs and shrouds
• Test feature – rotate handle counterclockwise
• 30 and 60A are DIN-rail-mountable
• 2-, 3-, and 4-pole versions available
• Integral fuse covers
• Lock-out / tag-out hasp

Ratings

Volts : 600VAC, 250VDC
Amps : 30A, 60A, 100A, and 200A
SCCR : Up to 200kA with class J fuses

Mersen FBJX Fused Disconnect Switches

Mersen Technical Datasheets

Mersen EJFS Enclosed Disconnect Switch

Mersen introduces two new NEMA 4X enclosed switches, the EJFS303RS0 (30A) and EJFS603RS0 (60A):

• A rugged design at a competitive price
• Heavy-duty polycarbonate NEMA 4X enclosure
• Complements existing line of Mersen enclosed disconnect switches
• UL listed, File E196672, Enclosed Manual Motor Controller
• cUL for CSA standard 22.2 #14; RoHS compliant

Features

• The compact design is 30% smaller than comparable units
• Designed with minimal indentations to facilitate easier cleaning. Great for the food service industry!
• Drill points, vs. knockouts, allow user to choose the hole size
• Integral handle can be locked-out with 3 padlocks
• Metal shaft is designed for years of service
• Accommodates 2 pairs of auxiliary contacts – Part #’s FSACNONC or FSACNONO, both UL listed for field installation
• Switch accepts 2 wires per terminal
• Dual Ground lug is standard
• Switch can easily be removed for increased access to the terminals

Mersen EJFS Enclosed Disconnect Switch

Mersen Technical Datasheets

Mersen Helio Protection Photovoltaic Fuse Line

Mersen is pleased to announce the launch of the industry’s first UL 2579 listed range of dedicated photovoltaic fuses ― the Helio Protection fuse line, which includes the HP6M, HP10M, and HP6J.

The new photovoltaic fuse line provides superior overcurrent protection at the combiner box and inverter levels and covers applications ranging from 1 to 400A, 600VDC, and 1000VDC. The enhanced fuse construction of the Helio Protection series makes it ideal for continuous temperature and current cycling withstand adding to system longevity. Low minimum breaking capacity capabilities of 1.35 times the fuse-rated current value allows for safe circuit interruption under typical low-fault current conditions produced by PV arrays.

Protect off-grid or grid-tied PV systems from unexpected ground faults and line faults using the Helio Protection fuse line. Primary customers for this fuse are solar combiner and re-combiner box builders, solar inverter manufacturers, and solar installers and integrators.

Mersen Helio Protection Photovoltaic Fuse Line

Mersen Technical Datasheets

Mersen Surge-Trap Type 1 X-Series Surge Protection Devices

Mersen, formerly Ferraz Shawmut, introduces its new X series line of UL 1449 third edition approved surge protection devices (SPDs), the Surge-Trap Type 1 X-Series, which provide overvoltage protection for all locations in the facility with the smallest footprints available. The new X-Series SPDs features industry leading TPMOV® technology inside.

The new series includes the Surge-Trap XR series, which provides overvoltage protection for distribution branch panels, control panels and equipment. The advanced performance Surge-Trap XP series provides overvoltage protection for larger distribution panels and branch panels. And, the Surge-Trap XT series offers advanced technology surge protection and provides high end protection for critical locations and service entrance gear.

“There are many SPDs on the market that no longer meet the UL1449 standard. To know if a SPD product is in compliance, look for the UL holographic label on the device. If it has a UL holographic label, the SPD is in compliance. If it doesn’t have one, it does not meet the new UL 1449 Third Edition standard,” explains Janelle Woodfall, Mersen Product Manager.

The Surge-Trap Type 1 X-Series SPDs are rated for NEMA 4X enclosures and suited for system voltages from 120V to 600V. They have a 20kA (In) nominal discharge current and high 200kA SCCR ratings. Agency approvals include UL 1449 third edition, IEC 61643, CE, ANSI/IEEE C62.41 (XR-series), RoHS compliant, and UL 96A lightening protection master label.

Mersen Surge-Trap Type 1 X-Series Surge Protection Devices

Mersen Technical Datasheets

Mersen HP6J 600VDC Photovoltaic Fuses

Mersen’s HP6J photovoltaic (PV) fuse series was engineered and designed specifically for the protection of photovoltaic systems. Its enhanced fuse construction makes it ideal for continuous temperature and current cycling withstand adding to system longevity. The 600VDC rated HP6J, designed for low minimum breaking capacity capabilities of 1.35 times the fuse rated current value, allows for safe circuit interruption under typical low fault current conditions produced by PV arrays.

Protect your off-grid or grid tied PV system from unexpected ground faults and line faults using Mersen's Helio Protection fuse line.

Features/Benefits

• Smallest footprint in the industry
• Low fault current interrupting capability
• Durable construction for enhanced system longevity
• Temperature cycle withstand capability
• Guaranteed operation at temperature extremes
• Industries first UL Listed Solution
• Globally accepted

Applications

• Re-combiner (sub-combiner, array combiner, master combiner) applications
• Inverter DC input protection
• Battery charge controllers

Ratings

• 70 to 400A
• 600VDC, 10kA I.R.
• 1.35 x In MBC

Approvals

• UL Listed to Standard UL2579 File E333668
• CSA Certified C22.2

Mersen HP6J 600VDC Photovoltaic Fuses

Mersen Technical Datasheets

New Literature from Mersen/Ferraz Shawmut

Fuse Control

Developed by Ferraz Shawmut and refined through extensive field research, Fuse Control is a simple program that packs a lot of muscle. It will give you the edge you need to mitigate arc flash hazards, achieve code compliance, eliminate obsolete fuse categories, reduce inventory by 25% or more and offer the highest grade overcurrent protection available.

High Power Switches

Ferraz Shawmut’s standard High Power Switches encompass a wide range of DC and AC switches designed to handle high current/low voltage and high voltage/low current applications. Offerings include rectifier output switches, disconnect switches in both AC and DC, transfer switches for AC and DC, cell switches and medium voltage AC switches, and AC earthing switches.

Order Mersen/Ferraz Shawmut Literature

Mersen/Ferraz Shawmut Technical Datasheets

Ferraz Shawmut Changes Name to Mersen

Carbone Lorraine is now Mersen

Ferraz Shawmut, your supplier of electrical protection solutions, is pleased to announce that we are changing our name to Mersen. The name change reflects our history and, more importantly, our strategic direction. Ferraz Shawmut is now Mersen.

Mersen is One Company

Ferraz Shawmut has long benefited from being a part of Carbone Lorraine, a large international group, which specializes in providing high-performance materials for extreme environments and solutions to enhance the reliability and safety of electrical systems. The company now consolidates its identity under one name – Mersen.

Mersen is Diversity

We embrace diversity. Through innovative product development and strategic acquisitions, we are positioned to serve a broad range of electrical applications with diverse solutions. We are a recognized leader in diverse markets - energy, transportation, chemical/pharmaceutical, electronics, process industries with a focus on sustainability. Our people represent every nationality around the globe, with production located to serve local markets across Asia, Europe and the Americas. We are a diverse company operating under a single mission – Mersen.

Mersen is Industry-Leading Expertise

A trusted leader in electrical protection for more than 125 years, we remain fiercely committed to essential research in electrical safety and reliability. Our people are industry experts, providing leading edge design and applications support. Combining a culture of knowledge and curiosity, we build on our expertise every day. Expertise is our source of energy – Mersen.

We are Mersen.

Mersen Press Release and FAQ

Mersen/Ferraz Shawmut Technical Datasheets