Ferraz Shawmut Fuse NH2UD69V700PV – Ultra-Fast High-Speed Semiconductor Protection Fuse

The Ferraz Shawmut Fuse NH2UD69V700PV (marketed under Mersen’s premium Protistor® brand line, item code J320490) represents the pinnacle of electrical overcurrent safeguarding. Engineered as a square-body, high-speed semiconductor protection fuse, this component provides ultimate security for advanced power electronics. It is purpose-built to deliver rapid, low $I^2t$ fault isolation, protecting critical power components like rectifiers, thyristors, GTOs, and IGBT devices from catastrophic short-circuit currents.

As shown in the product image, the Ferraz Shawmut Fuse NH2UD69V700PV utilizes a highly durable, square-profile ceramic body coupled with structural plain-blade terminals. Its dimensions comply with global DIN 43620/00 standard spacing, allowing the unit to slide perfectly into standard NH size 2 modular fuse holders, isolation blocks, and electrical disconnect switches across domestic and international installations. Featuring an integrated red mechanical double indicator on its front face plate, maintenance teams can instantly identify a tripped fuse across crowded distribution panels.

Key Features of the Ferraz Shawmut Fuse NH2UD69V700PV

Ultra-Fast aR Characteristic Protection: Configured specifically for semiconductor circuit nodes where partial-range, ultra-fast melting speed is mandatory to stop short circuits.
Pure Silver Die-Cut Elements: Built with high-conductivity internal silver elements embedded inside high-purity, solidified quartz sand to manage arcing profiles and depress localized peak $I^2t$ clearances.
Double Indicator Diagnostics: Outfitted with an dual visual mechanical indication system that can easily accept field-mountable low-voltage microswitches for automated trip reporting.
Silver-Plated Plain Blades: All connection blade tabs are electroplated with premium silver, resulting in exceptionally low DC resistance ( $0.293\text{ m}\Omega$ ) and minimal operational contact heating.
Non-Magnetic Robust Hardware: Formulated with structurally rigid, non-magnetic framing components to avoid inductive heating anomalies within strong electromagnetic environments.

Common Applications and Equipment Usage of Ferraz Shawmut Fuse NH2UD69V700PV

The immense current rating and rapid-trip profile of the Ferraz Shawmut Fuse NH2UD69V700PV make it standard equipment inside modern high-power industrial hubs:

Photovoltaic (PV) Inverter Arrays: Protects main central solar inverters and high-capacity battery storage banks from sudden DC bus or AC side faults.
Industrial Motor Drives (VFDs): Acts as main input overcurrent shields for large variable frequency drives and internal converter bridges.
Uninterruptible Power Supplies (UPS): Safely isolates short circuits inside commercial data-center UPS backup frameworks to limit structural circuit topology destruction.
Heavy-Duty Power Rectifiers: Preserves complex silicon rectifiers and sub-component diode arrays within high-current manufacturing grids.

Technical Specifications

The electrical performance thresholds of the Ferraz Shawmut Fuse NH2UD69V700PV are tightly controlled to satisfy strict international standards:

Parameter Specification	Technical Details & Operational Ratings
Component Type	Square Body High-Speed Semiconductor Fuse
Primary Target Keyword	Ferraz Shawmut Fuse NH2UD69V700PV
Manufacturer Catalogue No.	NH2UD69V700PV / J320490
Fuse Body Size	NH Size 2
Speed/Characteristic	aR (Ultra-Fast / Partial Range)
Rated Voltage (IEC)	$690\text{ VAC}$
Rated Voltage (UL)	$700\text{ VAC}$
Continuous Current Rating	$700\text{ A}$
Max Breaking Capacity ( $I_1$ )	$170\text{ kA}$ at Rated Voltage
Clearing $I^2t$ (Total)	$420\ \text{kA}^2\text{s}$
Melting $I^2t$	$78.1\ \text{kA}^2\text{s}$
Internal Power Dissipation	$175\text{ W}$ (at nominal load)
Dimensions ( $L \times W \times H$ )	$150\text{ mm} \times 52\text{ mm} \times 74\text{ mm}$
Weight	Approximately $0.62\text{ kg}$
Compliance Certifications	IEC 60269-4, UL Recognized, CE, UKCA, RoHS

Installation and Handling Precautions

Warning: High-power industrial electrical distribution networks carry lethal current loads. De-energize and lock out all upstream circuit feeds before installing or replacing an Ferraz Shawmut Fuse NH2UD69V700PV.

Use Proper Extraction Tools: Never use standard hand tools to insert or pull blade fuses from active terminal bays. Use an insulated NH fuse extraction handle (fuse puller) to shield against accidental flashovers.

Verify Holder Clip Tension: Ensure that the receiver clips inside your size 2 fuse block match the physical alignment parameters perfectly and retain uniform mechanical clamping force to optimize power efficiency.

Replace as a System Matching Pair: If multiple fuses are running in a multi-phase system, inspect surrounding fuses closely for secondary thermal degradation to guarantee electrical continuity.

To review official electrical safety declarations, I2t clearing curves, and complete component catalogs, check the global Mersen Eptech Electrical Protection Support Directory.

To request a fast commercial quote or evaluate real-time regional warehouse stock availability for bulk procurement needs, please connect with our sales branch via the Control Qatar Contact Page.