MERSEN FUSE 300V 700A T FUSE A3T700

MERSEN FUSE 300V 700A T FUSE A3T700

The A3T700 Class T Fast-Acting Fuse delivers rapid short-circuit protection for demanding industrial and commercial applications, accommodating up to 700A at 300VAC or 160VDC. Its compact blade design ensures easy installation and reliable performance in space-constrained panel assemblies.

SKU: A3T700MPN: A3T700
Price
List Price £744.98 ex VAT
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£744.98
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Manufacturer Lead Time

£744.98

Why Choose the Mersen A3T700 Amp-Trap Class T Fuse?

The Mersen A3T700 is a high-capacity Amp-Trap 2000 Class T fast-acting fuse designed to protect industrial electrical equipment, switchboards and power distribution systems against damaging overcurrent and short-circuit conditions. Its advanced current-limiting design rapidly interrupts fault currents, helping to minimise thermal and mechanical stress on downstream equipment while improving overall system protection.

Rated at 700 A, 300 V AC and 160 V DC, the Mersen A3T700 combines exceptional interrupting performance with the compact dimensions of a Class T fuse. Its unique physical design prevents substitution with lower-performance fuse classes, improving electrical safety and coordination.

The A3T700 is widely specified for switchboards, panelboards, load centres, industrial machinery and electrical distribution systems where dependable high-current protection is essential.

Key Advantages

  • Compact Class T fast-acting fuse for high-current applications.
  • 700 A rated current for heavy-duty industrial systems.
  • 300 V AC / 160 V DC voltage ratings.
  • Exceptional current-limiting performance reduces let-through energy.
  • Unique Class T dimensions prevent incorrect fuse substitution.
  • High interrupting capability helps protect valuable electrical equipment.

Key Features

  • Mersen Amp-Trap 2000 A3T series.
  • 700 A nominal current rating.
  • 300 V AC / 160 V DC rated voltage.
  • Fast-acting Class T fuse.
  • Glass melamine body for excellent dimensional stability.
  • Blade terminals with permanently stamped catalogue number.
  • Current-limiting design for rapid fault interruption.
  • Compatible with Class T fuse holders.

High-Performance Current-Limiting Protection

The Mersen A3T700 rapidly clears fault currents before damaging levels of energy can reach downstream conductors and equipment. Its current-limiting construction helps minimise equipment damage, reduce downtime and improve protection for electrical distribution systems operating at high fault levels.

Designed for demanding industrial applications, the A3T700 combines compact dimensions with outstanding fault-clearing capability, making it ideal for modern electrical panels where both performance and space efficiency are essential.

Typical Applications

  • Industrial switchboards.
  • Panelboards.
  • Load centres.
  • Electrical distribution systems.
  • Heavy industrial machinery.
  • Circuit breakers and metering centres.

Technical Specifications

Current 700 A
Voltage 300 V
Item number A3T700
Description Fuse A3T - Class T - Fast-Acting 300VAC 160VDC 700A Blade Amp-Trap®
EAN/UPC Code 782001890827
Rated voltage AC UL 300 V
Rated voltage DC UL 160 V
Frequency (Hz) 50/60 Hz
Ampere Rating 700 A
AC or DC AC/DC
Fuse Class Class T
Speed/Characteristic Fast-Acting
Mounting Bolted
AC Max I.R./Breaking Capacity I1: 200 kA
Connection/Terminal Material Copper
Connection/Terminal Type Blade
Product Diameter 52.8 mm
Product Length 85.9 mm
Sell Pack Quantity 1 EA
Sell Pack Weight 0.381 kg
Sell Pack Width 53.8 mm
Sell Pack Length 53.8 mm
Sell Pack Height 88.9 mm
Product group Low Voltage UL/CSA Fuses
Body/Insulating Material GMG
Product Weight 0.3615 kg
HS Code 85361090
Country of Manufacture Mexico
Fuse Type UL class
Fuse Class Fast acting

Frequently Asked Questions

What is the Mersen A3T700 used for?

It protects high-current industrial electrical systems, switchboards and power distribution equipment against overcurrent and short-circuit faults.

What is the current rating of the A3T700?

The Mersen A3T700 has a nominal current rating of 700 A.

What voltage is the A3T700 rated for?

The fuse is rated for operation at 300 V AC and 160 V DC.

What type of fuse is the A3T700?

The A3T700 is a fast-acting Class T Amp-Trap 2000 current-limiting fuse.

Can the Mersen A3T700 be reused after it operates?

No. The A3T700 is a single-use protective device and must be replaced after interrupting a fault.

Trusted for High-Current Circuit Protection

Mersen Amp-Trap Class T fuses are trusted by panel builders, OEMs and electrical engineers worldwide for compact dimensions, exceptional current limitation and dependable high-current protection.

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