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Bussmann 170M7156 Class aR Semiconductor Fuse, 3000A, 1000V
The Bussmann 170M7156 is a Class aR semiconductor protection fuse rated 3000A at 1000V AC, engineered for accompanied semiconductor protection (Utilization Category aR) in demanding industrial power applications. Part of the 4PKN/60 fuse family, this fuse is purpose-built to protect semiconductor devices such as power electronics and drive components from damaging overcurrent conditions. With a compact 120 mm x 133 mm x 89 mm form factor and a robust 2689 g construction, the 170M7156 delivers dependable, coordinated protection for high-capacity industrial circuits.
Key Features
- Amperage Rating: Rated 3000A for high-capacity overcurrent protection in industrial power circuits.
- Voltage Rating: 1000V AC rating supports demanding high-voltage semiconductor protection applications.
- Utilization Category aR: Classified aR (accompanied semiconductor protection) for coordinated protection of semiconductor devices against overload and short-circuit conditions.
- Application-Specific Design: Purpose-built for semiconductor protection in power electronics, drives, and industrial control systems.
- Compact Dimensions: Measures 120 mm (H) x 133 mm (W) x 89 mm (D) for space-efficient panel mounting.
- Heavy-Duty Construction: 2689 g weight reflects the fuse's robust current-carrying capacity and build quality.
- Model/Series: Part of the Bussmann 170M7156 (4PKN/60) fuse series.
Technical Specifications
- Amperage Rating: 3000 A
- Application: semiconductor protection
- Class: Class aR
- Compliances: Contact factory
- Fuse Indicator: Other
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Product Height: 120 mm
- Product Length Depth: 89 mm
- Product Weight: 2689 g
- Product Width: 133 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 1000 V
- Voltage Type: AC
Typical Applications
- Semiconductor Device Protection
- Power Electronics and Drive Systems
- Industrial Motor Control Circuits
- High-Capacity Power Distribution Systems
- Panelboard and Switchgear Protection
Why Bussmann?
Bussmann fuses are engineered for reliable, coordinated protection in demanding industrial electrical systems. The 170M7156's Class aR construction and 3000A, 1000V AC rating reflect a focus on dependable semiconductor protection for critical power applications. Contact the factory for compliance documentation specific to this fuse.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 3000 A
- Application:
- semiconductor protection
- Class:
- Class aR
- Compliances:
- Contact factory
- Fuse Indicator:
- Other
- Insulated Metal Gripping Lugs Imgl:
- No
- Packaging Type:
- Standard
- Product Height:
- 120 mm
- Product Length Depth:
- 89 mm
- Product Weight:
- 2689 g
- Product Width:
- 133 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 170M7156 – Frequently Asked Questions
1) Can I use the Bussmann 170M7156 as a general branch circuit or motor feeder fuse?
No. The 170M7156 is a Class aR semiconductor fuse, utilization category aR (accompanied semiconductor protection). aR means it protects the semiconductor only against short circuits and has to be backed up by another device for overload protection. For branch circuit or feeder duty you need a UL-listed branch circuit fuse class instead, not this one.
2) What are the electrical ratings on the Bussmann 170M7156?
3000 A at 1000 V AC. That AC-only rating matters: if your application is a DC link or DC drive bus, this fuse's stated rating does not cover it, and you want a fuse carrying a published DC voltage rating.
3) Will the 170M7156 fit in my panel? What space do I need to allow?
Allow for a body of 120 mm height, 133 mm width and 89 mm depth. At 3000 A this is a large square-body style fuse, not a cylindrical cartridge, so plan bus bar spacing and clearance around all three dimensions before you commit the enclosure.
4) Does the Bussmann 170M7156 have insulated metal gripping lugs?
No, the 170M7156 is supplied without IMGL. If your existing installation uses insulated gripping lugs for safe handling or for the terminal interface, this version will not match that arrangement.
5) What is the 170M7156 actually used to protect?
Semiconductor protection: power electronics such as thyristors, diodes and IGBT stacks in drives, industrial motor control and high-capacity distribution gear. It is sized to clear fast enough to keep the device inside its I2t withstand, which a conventional distribution fuse will not do.
6) Does the 170M7156 come with a blown fuse indicator or microswitch?
Indication on the 170M7156 is listed as other, rather than a standard visual indicator type. If your control scheme depends on a specific microswitch or striker for a blown-fuse trip signal, verify the indicator arrangement matches the one your panel is wired for.
7) What part number do I order and how does it ship?
Order Bussmann 170M7156, part of the 4PKN/60 family. Packaging is standard, sold as the individual fuse.
How fast can I get the Bussmann 170M7156 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 170M7156 come with a warranty?
Absolutely. The Bussmann 170M7156 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 170M7156?
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