Eaton Bussmann 25LET BS88 aR High-Speed Fuse – 25A, 280VAC/150VDC

Meet the Eaton Bussmann 25LET — a high-speed British Standard (BS88 Part 4) semiconductor protection fuse. Rated 25 A with 280 VAC / 150 VDC (UL) capability and an impressive 200 kA RMS Sym breaking capacity (50 kA DC at 150 VDC), it’s built for fast-acting protection of drives, rectifiers, and power converters.

Key Features at a Glance

• Amperage rating: 25 A

• Voltage rating: 280 VAC / 150 VDC (UL)

• Breaking/interrupt rating: 200 kA RMS Sym (AC), 50 kA (DC at 150 VDC)

• Utilization category: aR (semiconductor protection)

• Standards & approvals: CE Marked, RoHS Compliant, UL Recognized, IEC Rated, IEC 60269-4, designed/tested to BS88 Part 4

• Form factor: Offset bolted tags; blade end × blade end; stud mount (M6)

• Dimensions: 55 × 18 × 18 mm; weight: 32 g

• I²t (pre-arcing/clearing): 18 / 250

• Watt losses: 4 W

• Center-to-center connection distance: 41 mm

• Accessories compatibility: TI500 fuse indicator; MAI/MBI microswitch/adapter

• Fuse indicator on body: None (accessory-based)

• Color: None

Why Choose This Product
If you need reliable, fast-acting protection for sensitive semiconductors, the Eaton Bussmann 25LET delivers. The aR class response limits let-through energy, helping protect IGBTs, diodes, and thyristors. With high AC and DC interrupt ratings, compact dimensions, and recognized global standards, it integrates smoothly into industrial panels and power electronic assemblies.

Ideal For

• Semiconductor protection (IGBTs, diodes, thyristors)

• DC common bus protection

• DC drives and inverters

• Power converters/rectifiers

• OEM panel builders and MRO replacements

WhatsApp Quote
Message Shansen Enterprises on WhatsApp for a quick quote and availability. As an Authorized Channel Partner of ABB with a 100% customer satisfaction record, we also source genuine Eaton Bussmann components to keep your project on schedule. Get best pricing, fast delivery, and expert support.