Eaton (Bussmann) 170M4208 High‑Speed Square‑Body Fuse — 200A, 690 VAC aR Semiconductor Protection, 200 kAIC, Class aR (DIN 43653) — Pack of 3

Product overview The Eaton (Bussmann) 170M4208 is a high‑speed square‑body fuse engineered for semiconductor protection and high‑energy AC power applications. Designed for protecting power converters, DC drives, rectifiers and semiconductor devices, this Class aR fuse offers fast clearing characteristics and a high interrupting rating. This listing is for a standard pack of three (3) fuses.

Key specifications

• Manufacturer: Eaton (Bussmann)
• Part / Catalog number: 170M4208 (Global Catalog: 170M4208)
• Product type: High‑speed square‑body fuse (Class aR, DIN 43653)
• Application: Semiconductor protection, DC common bus, DC drives, power converters/rectifiers
• Amperage rating: 200 A (AC)
• Rated voltage (AC): 690 V (IEC) — UL rating 700 V (use IEC 690 V as primary AC rating)
• Breaking capacity / Interrupt rating: 200 kA (200 kAIC)
• Utilization category: aR (accompanied semiconductor protection) — Class aR
• Fuse size / Construction size: 1
• 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)
• Connection type: Blade end × blade end
• Center‑to‑center distance of connections: 108 mm
• Mounting dimension / lug: M10 (bolted tags)
• Clearing (I2t): 21,000 at 660 V
• Pre‑arc (I2t): 105,000
• Watt losses: 45 W (clearing loss 45)
• Rated current type: AC
• Dimensions (L×W×H): 245 mm × 142 mm × 62 mm
• Unit weight: 499 g
• Packaging: Standard packaging, pack quantity: 3 pcs
• Compliance & certifications: CE marked, RoHS compliant, IEC rated, UL recognized
• Warranty: Not applicable (per supplied data)
• UPC / EAN: UPC 051712258067, EAN 5027590451826

Features & benefits

• High interrupting capacity (200 kA) for robust protection in high‑energy fault conditions.
• Class aR time‑current design optimized for semiconductor device protection and fast fault clearing.
• Bolted tag construction with slotted center ensures secure mechanical and electrical connections for industrial applications.
• Top fuse status indicator simplifies visual fault detection and maintenance.

Installation & safety notes

• Verify compatibility with fuse holder and mounting: center‑to‑center 108 mm, M10 bolting, blade end connections.
• Confirm system coordination (I2t, clearing characteristics) between fuse and protected semiconductor devices or power modules.
• Use IEC 690 V rating for AC applications; consult UL rating (700 V) where applicable.
• Refer to Eaton (Bussmann) official datasheet for detailed time‑current curves, derating and application guidance before selection and installation.

Documentation & support

• For full electrical characteristics, dimensional drawings and application guidance, consult the Eaton (Bussmann) datasheet for part 170M4208 or contact Eaton technical support.