Eaton Bussmann 80LET 80A 280V AC High-Speed Semiconductor Fuse with Offset Bolted Tags

Description

Product Overview
The Eaton Bussmann 80LET is a British Standard high-speed fuse designed for semiconductor protection in industrial power-electronic systems. Its Class aR utilization category provides partial-range protection against high fault currents, helping reduce the energy passed into sensitive equipment during a short circuit.
This fuse is designed for compatible applications such as DC drives, power converters, rectifiers and DC common-bus systems. It uses offset bolted-tag connections and a compact cylindrical fuse body.

Eaton
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Technical Specifications
Specification Details
Brand Eaton Bussmann
Model / catalog number 80LET
Current rating 80A
Rated AC voltage 280V AC (UL rating)
Rated DC voltage 150V DC
Utilization category Class aR
Fuse type High-speed semiconductor fuse
Fuse series LET
Terminal style Offset bolted tags
Mounting Stud mounting, M6
Connection center-to-center distance 41 mm
Overall dimensions Approximately 55 × 18 × 18 mm
AC interrupting capacity 200 kA RMS symmetrical
DC interrupting capacity 50 kA at 150V DC
Pre-arcing I²t 300 A²s
Total clearing I²t 3,800 A²s
Power loss 10W
Fuse indicator None
Specifications are based on Eaton’s official product information. Confirm the applicable voltage rating for the exact installation and fuse standard before use.

Eaton
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Key Features
– 80A current rating for compatible semiconductor circuits.
– High-speed fuse operation to help limit fault energy.
– Class aR protection for partial-range semiconductor applications.
– Offset bolted-tag terminals for compatible stud-mounted assemblies.
– High interrupting capacity under specified operating conditions.
– Compact construction for suitable industrial electrical equipment.
Applications
The 80LET fuse may be used in appropriately designed systems such as:
– Semiconductor protection circuits
– DC common-bus systems
– DC motor drives
– Industrial power converters
– Rectifiers and power-electronic equipment
– Compatible industrial electrical assemblies
Installation and Compatibility Guidance
Check the fuse model, voltage rating, current rating, Class aR requirements, terminal spacing and mounting dimensions before replacing an existing fuse. Class aR fuses provide partial-range protection, so the overall circuit must include appropriate protection against lower-level overloads where required by the equipment design.
Do not assume the fuse is suitable for every 80A circuit. Confirm compatibility with the equipment manufacturer’s specifications and applicable electrical standards.
UAE Availability and Quotation
Dynavation Star Electrical Fittings Trading LLC supplies electrical and electronic components to industrial and commercial customers across the UAE.
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