Eaton (Bussmann) 170M5198 High‑Speed Square‑Body Fuse — 800A, 1250 VAC aR Semiconductor Protection, 100 kAIC, Class aR (DIN 43653) — Pack of 3

The Eaton (Bussmann) 170M5198 is a high‑speed square‑body fuse engineered for semiconductor protection and high‑energy DC/AC power applications. Designed to protect power converters, DC drives, rectifiers and semiconductor devices, this Class aR fuse provides rapid clearing characteristics and a high interrupting rating for demanding industrial systems. This listing is for a standard pack of three (3) fuses.

Key specifications

• Manufacturer: Eaton (Bussmann)
• Part number / Catalog number: 170M5198 (Global Catalog: 170M5198)
• Product type: High‑speed square‑body fuse (Class aR, DIN 43653)
• Application: Semiconductor protection, DC common bus, DC drives, power converters/rectifiers
• Amperage rating: 800 A (AC)
• Rated voltage (AC): 1250 V (IEC); 1300 V per UL — IEC AC rating used as primary: 1250 V AC
• Breaking capacity / Interrupt rating: 100 kA (100 kAIC)
• Utilization category: aR (accompanied semiconductor protection) / Class aR
• Fuse size / Construction size: 2
• Fuse shape & construction: Square body with slotted center bolted tags / bolted tag connections; DIN 43653 form factor
• Fuse indicator: Top fuse status indicator (TN/110 Type T indicator for Micro)
• Center‑to‑center distance of connections: 108 mm
• Mounting dimension / lug: M10 (center bolted tags)
• Clearing (I2t): 1,200,000 at 1000 V; 1,550,000 at 1250 V
• Pre‑arc (I2t): 245,000
• Watt losses (per fuse): 120 W
• Rated current type: AC
• Interrupting energy / breaking capacity: 100 kA
• Compliance & certifications: CE marked, RoHS compliant, IEC rated, UL recognized
• UPC / EAN: UPC 051712260480, EAN 5027590456159
• Dimensions (L×W×H): 284 mm × 175 mm × 67 mm
• Unit weight: 634 g
• Packaging: Standard packaging, pack quantity: 3 pcs
• Warranty: Not applicable (per supplied data)

Features & benefits

• High interrupting capacity (100 kA) to protect against high energy fault conditions.
• Class aR time‑current characteristics optimized for semiconductor protection and fast clearing of faults affecting power electronics.
• Bolted tag design with slotted center provides secure mechanical and electrical connection and facilitates installation in heavy‑duty systems.
• Top fuse status indicator simplifies visual fault detection and maintenance.
• Compliant with IEC and UL recognized standards for global industrial applications.

Installation & safety notes

• Verify correct fuse holder/mounting dimensions (center‑to‑center 108 mm, M10 bolting) before installation.
• Confirm system coordination (I2t, clearing characteristics) between fuse and protected semiconductor devices or power modules.
• Use rated voltage 1250 V AC for IEC applications; refer to UL rating (1300 V) when using in UL‑specified systems.
• Consult Eaton (Bussmann) official datasheet for detailed time‑current curves, derating, and application guidance prior to selection and installation.

Documentation & support

• Refer to Eaton (Bussmann) datasheet and technical notes for 170M5198 for full electrical characteristics, dimensions and time‑current curves. Contact Eaton technical support for application assistance.