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Bussmann KAW-12 Eaton Series Semiconductor Fuse, 600V, 12A, Non-Indicating
Model: BUSS-KAW-12
Bussmann KAW-12 Eaton Series Semiconductor Fuse, 600V, 12A, Non-IndicatingThe Bussmann KAW-12 is an Eaton Bussmann series KAW semiconductor fuse engineered to protect sensitive power semiconductor...
Bussmann
$441.11
Bussmann Eaton KAW Series Semiconductor Fuse
The Bussmann Eaton KAW series semiconductor fuse delivers fast-acting overcurrent protection for power semiconductors, SCRs, and rectifiers used in demanding industrial and power conversion circuits. This Bussmann fuse family is offered in amperage ratings from 15A to 25A, giving engineers the flexibility to match fuse protection precisely to circuit load requirements. Compact and reliable, the KAW series is built to Eaton Bussmann quality standards for consistent performance in control panels, drives, and power electronics assemblies where protecting sensitive semiconductor components from damaging fault currents is essential to system uptime.
Key Features
- Amp Rating Range: Available in 15A and 25A ratings, allowing designers to select the precise fuse rating that matches the semiconductor circuit being protected.
- Series Construction: Bussmann Eaton KAW series semiconductor fuse engineered for fast-acting response to help prevent damage to costly power semiconductor devices.
- Compact Footprint: Measures approximately .36 in wide x .36 in deep x 1.5 in high, making it well suited for space-constrained enclosures and tightly packed panel layouts.
- Lightweight Design: Approximately .1 lb, simplifying handling, stocking, and replacement during maintenance.
- Semiconductor Protection: Engineered specifically to safeguard SCRs, rectifiers, and other power semiconductor devices from damaging overcurrent conditions that can lead to costly downtime.
- Family Flexibility: The 15A and 25A options within the KAW series let one product line cover multiple circuit protection requirements without changing fuse footprint.
Technical Specifications
- Amp Rating Options: 15A, 25A
- Product Length Depth: .36 in
- Product Width: .36 in
- Product Height: 1.5 in
- Product Weight: .1 lb
- Compliances: Contact factory
Typical Applications
- Power Semiconductor and SCR Protection
- Rectifier and Power Conversion Circuits
- Motor Drive and Industrial Control Panels
- Power Electronics Assemblies
- Industrial and Commercial Electrical Systems
- Panel Retrofits Requiring a Compact Fuse Footprint
Why Bussmann?
Bussmann by Eaton is a trusted name in circuit protection, and the KAW series semiconductor fuse continues that standard with dependable, fast-acting performance for sensitive power electronics. Its compact, lightweight construction and range of amp ratings from 15A to 25A make it a practical choice for engineers and electricians who need reliable overcurrent protection without added bulk in the panel. For applications where component-level protection of semiconductor devices is critical, the Bussmann Eaton KAW series offers a proven, professional-grade solution. Choose Bussmann for code-compliant, professional-grade electrical protection backed by the Eaton Bussmann engineering standard that electrical contractors and OEMs have relied on for demanding power circuit designs.
Manufacturer Resources
Product Specs
- Department:
- Electrical
- Product Length Depth:
- .36 in
- Product Weight:
- .1 lb
- Product Width:
- .36 in
- Compliances:
- Contact factory
- Product Height:
- 1.5 in
- Product Type:
- Semiconductor Fuse
- Series:
- KAW
- Amperage Rating:
- 15A-25A
- Product Group:
- Wiring Devices
Bussmann KAW-15 – Frequently Asked Questions
1) What amp ratings does the Bussmann KAW series semiconductor fuse come in?
Two: 15A and 25A. The 15A is ordered as KAW-15 and the 25A as KAW-25. Both share the same body size, so you can move between the two ratings in a panel without changing the fuse footprint or the holder.
2) Can I use a semiconductor fuse like the Bussmann KAW in place of a standard branch circuit fuse?
No, and the swap goes the wrong way too. The KAW is a fast-acting semiconductor fuse built to clear quickly enough to save SCRs, rectifiers and other power semiconductors from fault current. It is a component-protection device, not a branch circuit overcurrent device, and it is not intended to replace a general purpose branch fuse. Equally, dropping a standard time-delay fuse into a semiconductor position will let the device fail before the fuse does.
3) I need 30A of semiconductor protection. Does the KAW series go that high?
No. The KAW tops out at 25A. If you need 30A, the Littelfuse L25S030 is a 250V 30A semiconductor fuse we carry, and it is the closest step up. Confirm your circuit voltage suits the 250V rating before you substitute.
4) I need a semiconductor fuse above 25 amps - what should I use instead of the KAW series?
The Bussmann KAW series covers 15A and 25A, so a higher-current circuit needs a different family. The Littelfuse L25S030 is a 250V 30A semiconductor fuse and is the nearest step up in the comparable range. If the circuit runs at a higher voltage class, the Littelfuse L50S series is rated 500V and the L70S series is rated 700VAC/650VDC.
5) What does the Bussmann KAW fuse actually protect in a variable frequency drive or rectifier?
It sits ahead of the solid state devices: SCRs, diodes and rectifier bridges in power conversion circuits, motor drives, industrial control panels and power electronics assemblies. The point is component-level protection, clearing a fault fast enough that the semiconductor survives rather than the fuse simply opening after the silicon has already gone.
6) Which part number do I order for the Bussmann KAW, and how do I tell the two apart?
The amp rating is the suffix. KAW-15 is the 15A fuse, KAW-25 is the 25A. Those are the full manufacturer part numbers, so quote them exactly when ordering spares for a panel BOM.
7) Is the Bussmann KAW a fast-acting or time-delay fuse?
Fast-acting. The whole point of the KAW is speed of clearing, because power semiconductors have very little thermal headroom in a fault. Do not spec it on a motor or transformer inrush circuit where you actually want a time-delay characteristic; it will nuisance trip.
8) My drive runs at 480V - is the Bussmann KAW fuse the right choice, or do I need something else?
Voltage class is the deciding factor on a semiconductor fuse, and it has to be selected against the circuit rating rather than by amperage alone. For higher-voltage power conversion circuits, the Littelfuse L50S series is a very fast-acting semiconductor fuse rated 500V and the L70S series is rated 700VAC/650VDC. The Bussmann KAW series is offered in 15A and 25A ratings for semiconductor, SCR and rectifier protection in control panels, drives and power electronics assemblies, so confirm the KAW voltage rating against your circuit with the factory before substituting either way.
9) What is the difference between a very fast-acting Littelfuse L15S and the Bussmann KAW series?
Both are semiconductor fuses intended to protect power semiconductors rather than general branch circuits. The Littelfuse L15S is described as a very fast-acting type rated 150VAC/150VDC. The Bussmann KAW series is a fast-acting semiconductor fuse in 15A and 25A ratings with a compact body measuring about .36 in wide by .36 in deep by 1.5 in high, which matters where the panel space is tight. Match the clearing speed class and voltage rating to what the semiconductor device manufacturer calls for.
10) Can I use a standard fast-acting control fuse instead of a KAW semiconductor fuse?
No. The Bussmann KAW series is engineered specifically to protect SCRs, rectifiers and other power semiconductor devices, which clear far faster than a general-purpose control fuse will. If the KAW does not suit the opening, substitute another semiconductor-rated fuse such as the Littelfuse L15S, L25S, L50S or L70S series, not a general-purpose fast-acting fuse of the same amperage.
How fast can I get the Bussmann KAW-15 delivered?
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann KAW-15 come with a warranty?
Absolutely. The Bussmann KAW-15 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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