Eaton (Bussmann) 450SBMT High‑Speed British Standard Fuse — 450A, 240 VAC aR Semiconductor Protection, 200 kAIC (BS88 / IEC 60269) — Pack of 5

The Eaton (Bussmann) 450SBMT is a high‑speed British Standard (BS88) fuse designed for semiconductor protection and high‑energy AC power applications. Intended for protection of power converters, DC drives, rectifiers and semiconductor devices, this Class aR fuse provides rapid clearing characteristics and a high interrupting rating. This listing is for a standard pack of five (5) sealed SBMT fuses.

Key specifications

• Manufacturer: Eaton (Bussmann)
• Part / Catalog number: 450SBMT (Global Catalog: 450SBMT)
• Product type: High‑speed British Standard fuse (SBMT) — BS88 / IEC 60269 compliant
• Application: Semiconductor protection, DC common bus, DC drives, power converters/rectifiers
• Amperage rating: 450 A (AC)
• Rated voltage (AC): 240 V
• Breaking capacity / Interrupt rating: 200 kA (200 kAIC / rated switching capacity 200 kA)
• Utilization category: aR (accompanied semiconductor protection) — Class aR
• Fuse shape & construction: Center bolted tags; sealed SBMT form
• Center‑to‑center distance of connections: 57 mm
• Mounting dimension / lug: M12 (center bolted tags)
• Watt losses: 42 W
• Fuse indicator: None (sealed fuse)
• Certifications & compliances: BS88, IEC 60269, CE, RoHS compliant
• Dimensions (L×W×H): 210 mm × 105 mm × 42 mm
• Unit weight: 211.6 g
• Packaging: Standard packaging, pack quantity: 5 pcs
• Warranty: Not applicable (per supplied data)

Features & benefits

• High interrupting capacity (200 kA) for reliable protection in high‑energy fault conditions.
• Class aR time‑current characteristics optimized for fast clearing of faults affecting semiconductors.
• BS88 / IEC 60269 compliance suitable for British Standard installations and global applications requiring BS form factors.
• Sealed SBMT construction reduces environmental exposure and provides robust handling.

Installation & safety notes

• Verify physical and electrical compatibility with existing fuse holders: center‑to‑center 57 mm, M12 bolting.
• Confirm coordination of I2t/clearing characteristics between fuse and protected semiconductor devices prior to installation.
• Use in AC systems at rated 240 V unless otherwise specified for your application.
• Consult Eaton (Bussmann) datasheet and technical support for full time‑current curves, derating and application guidance.

Documentation & support

• Refer to Eaton (Bussmann) official datasheet for part 450SBMT for full electrical characteristics, dimensional drawings and application guidance. Contact Eaton technical support for assistance.