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BUSSMANN FWH-45B Fast-Acting Bolt-On Fuse, 45 A, 500 V AC/DC, Non-Indicating - Fast-Acting Bolt-On Fuses
BUSSMANNFast-Acting Bolt-On Fuses

BUSSMANN FWH-45B Fast-Acting Bolt-On Fuse, 45 A, 500 V AC/DC, Non-Indicating

The BUSSMANN FWH Series Semiconductor Fuse (MPN FWH-45B) is a fast-acting bolt-on fuse rated at 45 A and 500 V AC/DC. This non-indicating fuse is designed for overcurrent protection in power electronic circuits.

SKU 3G-OTH-25050

Also listed as: FWH45B · FWH 45B

Brand
BUSSMANN
Item
FWH-45B Fast-Acting Bolt-On Fuse, 45 A, 500 V AC/DC, Non-Indicating
Part Number
FWH-45B
Category
Fast-Acting Bolt-On Fuses
Available to Order
Also known as:FWH-45BBUSSMANN
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Technical Specifications

BUSSMANN
Manufacturer Part Number
FWH-45B
Series
FWH
Type
Fast-Acting, 45 A, Non-Indicating
AC
500 V
Voltage Type
AC/DC
DC DC Volt Rating
500 V

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BUSSMANN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BUSSMANN FWH Series Semiconductor Fuse (MPN FWH-45B) is a fast-acting bolt-on fuse rated at 45 A and 500 V AC/DC. This non-indicating fuse is designed for overcurrent protection in power electronic circuits.

Frequently Asked Questions

What is the BUSSMANN FWH-45B semiconductor fuse used for?

The BUSSMANN FWH-45B is a fast-acting bolt-on fuse used for overcurrent protection in power electronic circuits, such as variable frequency drives, rectifiers, and UPS systems. It safeguards sensitive semiconductor devices by clearing faults quickly, preventing damage from short circuits or overloads in industrial equipment.

What are the specifications of the BUSSMANN FWH-45B fuse?

The BUSSMANN FWH-45B is a 45 A, fast-acting, non-indicating semiconductor fuse from the FWH Series. It has a voltage rating of 500 V AC and 500 V DC, with a bolt-on mounting style. The part number is FWH-45B, and it is designed for overcurrent protection in AC/DC circuits.

Where to buy the BUSSMANN FWH-45B fuse worldwide?

You can source the BUSSMANN FWH-45B fuse through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times; we provide competitive pricing and reliable sourcing for this BUSSMANN fuse.

How to select the right BUSSMANN FWH series fuse for your application?

To select the correct BUSSMANN FWH series fuse, match the voltage rating (500 V AC/DC) and current rating (e.g., 45 A for the FWH-45B) to your circuit requirements. Ensure the fast-acting characteristic aligns with the inrush current of your semiconductor devices. Consult the fuse's time-current curve for coordination with upstream protection.

Used in

Common applications for BUSSMANN
Industrial drives — BUSSMANN FWC series fast-acting cylindrical fuses protect power semiconductors in AC/DC drive circuits.
Control transformers — BUSSMANN FNQ-R series time-delay fuses handle inrush currents in control power circuits.
Semiconductor protection — BUSSMANN KAC series bolt-on fuses safeguard diodes, thyristors, and IGBTs in AC-only applications.
Electrical panels — BUSSMANN FP-2, FP-3, FP-4, and FP-6 fuse pullers enable safe fuse replacement in distribution panels.
Automotive electrical systems — BUSSMANN FP-A3 fuse puller removes and installs 1/4 in and 1/2 in automotive fuses.
Power supplies — BUSSMANN FWC series fuses provide overcurrent protection in AC/DC power supply circuits.
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BUSSMANN 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.

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