BUSSMANN Semiconductor Fuse: FWX Series, Fast-Acting, 400 A, 250 V AC
The BUSSMANN FWX Series Semiconductor Fuse (MPN FWX-400A) is a fast-acting bolt-on fuse rated at 400 A, 250 V AC, and 250 V DC. This AC/DC voltage type fuse is designed for semiconductor protection applications.
SKU 3G-OTH-26165
Also listed as: FWX400A · FWX 400A
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The BUSSMANN FWX Series Semiconductor Fuse (MPN FWX-400A) is a fast-acting bolt-on fuse rated at 400 A, 250 V AC, and 250 V DC. This AC/DC voltage type fuse is designed for semiconductor protection applications.
Frequently Asked Questions
What is the BUSSMANN FWX-400A semiconductor fuse used for?
The BUSSMANN FWX-400A is a fast-acting bolt-on fuse designed to protect semiconductor devices such as diodes, thyristors, and IGBTs from overcurrent. It is commonly used in power supplies, drives, and industrial rectifiers where rapid fault clearing is critical to prevent damage to sensitive electronics.
What are the specifications of the BUSSMANN FWX-400A fuse?
The BUSSMANN FWX-400A is rated at 400 A with a voltage rating of 250 V AC and 250 V DC. It is part of the FWX series, features a fast-acting characteristic, and uses a bolt-on mounting style. The manufacturer part number is FWX-400A.
Where to buy the BUSSMANN FWX-400A fuse worldwide?
3G Electric supplies the BUSSMANN FWX-400A semiconductor fuse to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time; we source genuine BUSSMANN components for industrial applications across 14 departments.
How to select the correct BUSSMANN FWX series fuse for my application?
To select the correct FWX series fuse, match the continuous current rating (400 A for the FWX-400A) to your load, ensure the voltage rating (250 V AC/DC) exceeds your system voltage, and verify the interrupting rating meets fault current requirements. Always consult the manufacturer's data sheet for coordination with semiconductor devices.
Used in
Common applications for BUSSMANNBUSSMANN Products
3G Electric supplies BUSSMANN fast-acting bolt-on fuses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
