Eaton Bussmann 170M6549 1100A 1000V aR High-Speed Semiconductor Fuse

Description

Product Overview
The Bussmann 170M6549 high-speed fuse belongs to Eaton’s range of square-body semiconductor protection fuses. It is designed for applications where sensitive power components require fast-acting protection against short-circuit conditions.
Its Class aR utilization category means it provides partial-range protection for semiconductor devices. It should be used as part of a correctly engineered protection system, with any additional overload protection required by the equipment design.
The fuse is rated at 1100A and 1000V AC and is intended for compatible industrial power-conversion equipment.

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Technical Specifications
Specification Verified details
Brand Eaton Bussmann
Model 170M6549
Product type High-speed semiconductor fuse
Rated current 1100A
Rated voltage 1000V AC
Voltage type AC/DC series specification; confirm application-specific limits
Utilization category Class aR
Fuse size Size 3
Fuse construction Square body
Connection type Flush-end connections
Indicator Centre fuse-status indicator, Type K
Interrupting rating 100kA
Pre-arcing I²t 575,000 A²s
Clearing I²t 2,800,000 A²s at 1000V; 3,600,000 A²s at 1250V, as specified
Power loss 140W
Dimensions 138 × 58 × 45 mm
Standards and compliance IEC rated, UL Recognized, CE marked and RoHS compliant
Typical applications Semiconductor protection, DC common buses, DC drives, converters and rectifiers

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Key Features
– High-speed operation: Designed for semiconductor short-circuit protection.
– 1100A current rating: For equipment designed around this specific fuse rating.
– 1000V AC rating: Suitable for applications within the manufacturer’s specified limits.
– Class aR protection: Provides partial-range protection for semiconductor devices.
– High interrupting capacity: Rated at 100kA according to manufacturer specifications.
– Fuse-status indication: Includes a centre indicator with a Type K configuration.
– Industrial construction: Size 3 square-body design with flush-end connections.

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Applications
The 170M6549 is intended for compatible systems including:
– Semiconductor devices and power modules
– DC common-bus systems
– Industrial DC drives
– Power converters and rectifiers
– Industrial power-electronic equipment
– Systems requiring high-speed, partial-range semiconductor protection
Installation and Compatibility Guidance
Before selecting a replacement, verify the exact model, rated current, voltage, fuse class, connection dimensions, indicator arrangement and required time-current and I²t characteristics.
Because Class aR fuses provide partial-range protection, they may need coordinated overload protection elsewhere in the system. Have a qualified electrical professional confirm compatibility with the equipment manufacturer’s design. Never substitute a fuse based only on its current rating or physical dimensions.
UAE Supply and Quotation
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