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Bussmann 170M6253 High-Speed Square Body Fuse, Class aR, 1000A, 700V
Model: BUSS-170M6253
Bussmann 170M6253 High-Speed Square Body Fuse, Class aR, 1000A, 700VThe Bussmann 170M6253 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection...
Bussmann
$3,842.99
Bussmann 170M8650 High-Speed Square Body Fuse, 1000A Class aR
The Bussmann 170M8650 is a high-speed, Eaton Bussmann series square body fuse engineered for the protection of power rectifiers and other semiconductor-based equipment. Rated 1000A at 1000V AC, this Class aR fuse (Utilization Category aR, accompanied semiconductor protection) features a square body design with knife blade contacts and a top fuse status indicator for at-a-glance condition monitoring. Built for demanding industrial power conversion applications where fast-acting semiconductor protection is critical.
Key Features
- Amperage Rating: 1000A for high-current circuit protection in power conversion equipment.
- Voltage Rating: 1000V AC for use in high-voltage industrial power circuits.
- Fuse Shape: Square body with knife blade contacts for secure, low-resistance mounting connections.
- Class aR: Utilization Category aR (accompanied semiconductor protection) for fast-acting protection of power rectifiers and semiconductor devices.
- Top Fuse Status Indicator: Provides visual confirmation of fuse condition without the need for additional test equipment.
- Application: Purpose-built for protection of power rectifiers in industrial drive and conversion systems.
Technical Specifications
- Amperage Rating: 1000 A
- Voltage Rating: 1000 V
- Voltage Type: AC
- Utilization Category: aR (accompanied semiconductor protection)
- Fuse Shape: Square body, knife blade contacts
- Application: Protection of power rectifiers
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Compliances: Contact factory
- Product Height: 76 mm
- Product Length Depth: 168 mm
- Product Width: 95 mm
- Product Weight: 1259 g
Typical Applications
- Protection of Power Rectifiers
- Semiconductor and Power Conversion Equipment
- Industrial Drive and Rectifier Systems
- High-Speed Fuse Protection for Power Electronics
Why Bussmann?
Bussmann by Eaton is a recognized name in circuit protection, and the 170M8650 square body fuse reflects that standard with its high-speed Class aR design built specifically for semiconductor and power rectifier protection. The square body construction with knife blade contacts and top fuse status indicator supports dependable installation and quick condition checks in demanding industrial power systems.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 1000 A
- Application:
- Protection of power rectifiers
- Class:
- Class aR
- Compliances:
- Contact factory
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, knife blade contacts
- Insulated Metal Gripping Lugs Imgl:
- No
- Packaging Type:
- Standard
- Product Height:
- 76 mm
- Product Length Depth:
- 168 mm
- Product Weight:
- 1259 g
- Product Width:
- 95 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 1000 V
- Voltage Type:
- AC
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse
Bussmann 170M8650 – Frequently Asked Questions
1) Will the Bussmann 170M8650 fuse fit my existing square body fuse holder?
The 170M8650 is a square body fuse with knife blade contacts, and its body measures 76 mm high, 168 mm long/deep and 95 mm wide. Those three numbers are what decide whether it drops into your existing mounting: compare them against the centre spacing and clearance of the base or busbar mount you already have. It does not come with insulated metal gripping lugs (IMGL), so if your current fuse uses IMGL lugs you are not looking at a like-for-like part.
2) Is a Class aR fuse the right type for protecting a rectifier bridge, or do I need something else?
Class aR is the correct family for semiconductor work. The 170M8650 carries Utilization Category aR, meaning accompanied semiconductor protection: it is a high-speed element intended to protect power rectifiers and similar semiconductor devices, working alongside other protection rather than providing full-range overload protection on its own. If you need a fuse that handles both overload and short circuit across the whole range on that circuit, an aR fuse is not the part for it, and general-purpose branch protection is a different fuse class entirely.
3) Can I use the Bussmann 170M8650 on a DC link or DC bus?
The rating on the 170M8650 is 1000 A at 1000 V AC. The voltage type is AC, so the published rating covers AC circuits only. Do not carry that 1000 V figure across to a DC bus; semiconductor fuses have separate, usually lower, DC voltage ratings and none is published for this part.
4) How do I tell whether a 170M8650 fuse has blown without pulling it out or using a meter?
There is a top fuse status indicator on the 170M8650, so a maintenance tech can check condition visually from above the fuse with no test equipment and without removing it from the base. That matters in a rectifier cabinet where several fuses sit side by side and you need to find the one that opened quickly. Note the indicator is on top, so it needs to be visible from the front or above once mounted.
5) Does the Bussmann 170M8650 come with mounting hardware or gripping lugs?
No. The 170M8650 is supplied as the fuse only, with knife blade contacts and no insulated metal gripping lugs. Bolting hardware and the fuse base or busbar connection are separate items, so plan on reusing the existing mounting or specifying it alongside the fuse.
6) Is this fuse a suitable spare for a 1000A industrial drive or power conversion cabinet?
That is exactly what it is built for: high-speed semiconductor protection in industrial drive and rectifier systems at 1000 A, 1000 V AC. For a facility spares programme, the deciding checks are the amp and AC voltage rating matching your existing fuse, and the 76 x 168 x 95 mm square body with knife blades matching the base already in the cabinet. Getting both right means one part number covers every identical rectifier position in the plant.
How fast can I get the Bussmann 170M8650 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann 170M8650 come with a warranty?
Absolutely. The Bussmann 170M8650 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann 170M8650?
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