Eaton (Bussmann) 170L8442 — 170L Series Specialty High‑Speed Fuse Link, 400 A, 660 V, aR Characteristic, Square‑Body Blade — Pack of 3

The Eaton (Bussmann) 170L8442 is a 170L series specialty high‑speed fuse link engineered for demanding power protection applications. Rated at 400 A and 660 V, with an aR (ultra‑fast/semiconductor) characteristic and square‑body blade form factor, this fuse provides rapid clearing performance in power conversion and semiconductor protection roles. Supplied as a pack of 3.

Key specifications

• Manufacturer: Eaton (Bussmann)
• Series / Model: 170L series — 170L8442
• Product type: Specialty / High‑Speed Fuse Link (square‑body blade)
• Ampere rating: 400 A
• Voltage rating: 660 V (system rating shown in product description)
• Utilization category / characteristic: aR (as indicated)
• Body style: Square‑body blade fuses
• Packaging: Bulk; sell pack quantity: 3 pcs
• Typical applications: Semiconductor protection, power converters, inverters, industrial power electronics

Features & benefits

• Ultra‑fast aR characteristic for effective protection of semiconductor devices and rapid fault clearing.
• Square‑body blade format for compact, robust mounting in heavy‑duty power assemblies.
• Eaton/Bussmann quality with consistent performance for industrial and specialty power protection designs.

Handling & installation notes

• Confirm proper mating holders and mounting hardware compatible with square‑body blade fuses.
• Replace with identical Eaton 170L series fuse links to maintain protective coordination.
• Verify coordination and short‑circuit ratings with upstream protective devices and system specifications.

Ordering & availability

• Manufacturer: Eaton (Bussmann). Non‑stocked item; factory lead time — request delivery quote. Pricing varies by quantity.