Bussmann 170M1777 High-Speed F...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,816.25
Bussmann 170M1777 High-Speed Fuse-Link, 400A, 690V AC, Class aR, Size 230

Bussmann 170M1777 High-Speed Fuse-Link, 400A, 690V AC, Class aR, Size 230

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Model: 170M1777

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,816.25
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Bussmann 170M1777 High-Speed Fuse-Link, 400A, 690V AC, Class aR, Size 230

The Bussmann 170M1777 is a high-speed fuse-link engineered for demanding IGBT circuits and semiconductor protection applications. Rated 400A at AC 690V, this size 230 fuse-link measures 24 x 78 x 98 mm and carries a Class aR utilization rating for accompanied semiconductor protection. Backed by a 200 kAIC interrupt rating and dual IEC and UL recognition, it delivers the fast clearing speed solid-state power circuits require.

Key Features

  • Current Rating: 400A at AC 690V for reliable overcurrent protection in power electronic circuits.
  • High-Speed Class aR: Utilization category aR (accompanied semiconductor protection) provides fast-acting clearing to safeguard sensitive semiconductor devices.
  • Compact Dimensions: Size 230 body measuring 24 x 78 x 98 mm for standard fuse-holder compatibility.
  • Interrupt Rating: 200 kAIC breaking capacity for high fault-current environments.
  • Voltage Rating: 750V AC/DC per manufacturer voltage rating specification.
  • Fuse Shape: Square body with offset bolted tags for secure, low-resistance terminal connections.
  • Application-Specific Design: Purpose-built for IGBT circuits and semiconductor protection in industrial power conversion equipment.
  • No Indicator: Supplied without a blown-fuse indicator per manufacturer specification.

Certifications & Compliance

  • IEC 60269-4 Certified
  • CE Compliant
  • UL Recognized

Technical Specifications

  • Application: IGBT circuits, semiconductor protection.
  • Certifications: IEC 60269-4.
  • Class: Class aR.
  • Compliances: CE.
  • Fuse Indicator: None.
  • Fuse Shape: Square body, offset bolted tags.
  • Insulated Metal Gripping Lugs (IMGL): No.
  • Interrupt Rating: 200 kAIC.
  • Packaging Type: Standard.
  • Product Height: 52 mm.
  • Product Length/Depth: 265 mm.
  • Product Weight: 294 g.
  • Product Width: 104 mm.
  • Utilization Category: aR (accompanied semiconductor protection).
  • Voltage Rating: 750 V.
  • Voltage Type: AC/DC.

Typical Applications

  • IGBT Circuit Protection
  • Semiconductor Device Protection
  • High-Speed Fusing for Power Electronics
  • Industrial Power Conversion Equipment

Why Bussmann?

The Bussmann 170M1777 combines Class aR high-speed performance with a 200 kAIC interrupt rating, IEC 60269-4 certification, and CE compliance for dependable semiconductor circuit protection. Bussmann's engineering delivers the fast-clearing, code-compliant fuse performance that IGBT and power electronic systems depend on for safe, reliable operation.

Manufacturer Resources

Product Specs

Amperage Rating:
400 A
Application:
IGBT circuits, semiconductor protection
Certifications:
IEC 60269-4
Class:
Class aR
Compliances:
CE
Fuse Shape:
Square body, offset bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
200 kAIC
Packaging Type:
Standard
Product Height:
52 mm
Product Length Depth:
265 mm
Product Weight:
294 g
Product Width:
104 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
750 V
Voltage Type:
AC/DC
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M1777 – Frequently Asked Questions

1) Will a Bussmann 170M1777 high-speed fuse protect IGBTs, or do I need a standard industrial fuse?
The 170M1777 is built for exactly that job. It carries utilization category aR, accompanied semiconductor protection, which means it clears fast enough to protect solid-state devices like IGBTs and diode/thyristor stacks in power conversion gear. A standard gG or Class J industrial fuse clears too slowly to save a semiconductor junction. One thing to understand about aR: it is a partial-range device, so it handles short-circuit currents but is not intended to be the sole protection against low-level overloads. Pair it with the drive's own overload protection.
2) What are the current and voltage ratings on the Bussmann 170M1777?
It's a 400 A fuse-link with a 750 V rating, usable on AC or DC circuits. That covers the common 690 V AC drive and converter bus voltages. Breaking capacity is 200 kAIC, so it can sit on a stiff supply with high available fault current without needing an upstream limiter.
3) How does the 170M1777 fuse mount - is it a clip-in cartridge or bolted?
Bolted. The 170M1777 has a square body with offset bolted tags, so it lands on a busbar or fuse base with hardware rather than dropping into spring clips. Budget for the correct bolts and washers and torque the terminals properly; a loose tag on a 400 A fuse runs hot. It is not supplied with insulated metal gripping lugs.
4) What size body is the 170M square-body fuse in the 400A 690V rating?
The 170M1777 is a size 230 square-body fuse-link. Square-body fuses are ordered by body size because the mounting centres and tag geometry follow it, so a size 230 base or busbar layout is what this one drops onto. If your existing base was drilled for a different body size, the tags will not line up.
5) Does the Bussmann 170M1777 have a blown-fuse indicator or microswitch?
No indicator. The 170M1777 ships without a blown-fuse indicator, so there's no striker pin or visual flag to trip a microswitch. If your panel relies on fuse-blown monitoring for an alarm or drive shutdown, you'll need a version with an indicator or a separate voltage-sensing method across the fuse.
6) Is the Bussmann 170M1777 approved for use in equipment shipped to Europe?
It is certified to IEC 60269-4, the standard covering fuse-links for semiconductor protection, and it is CE compliant. It also carries UL Recognition, which matters if the same panel build has to satisfy a North American listing agency.
7) How much does the Bussmann 170M1777 fuse-link weigh?
294 g. Light enough to hand-mount, but on a vertical busbar assembly the tags carry the whole load, so support the cable or bar rather than letting it hang off the fuse.
How fast can I get the Bussmann 170M1777 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 170M1777 come with a warranty?
Absolutely. The Bussmann 170M1777 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 170M1777?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann 170M1777 from ZenSupply?
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