Bussmann 170M3955 Class aR Hig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,037.61
Bussmann 170M3955 High Speed Fuse

Bussmann 170M3955 Class aR High Speed Fuse, 125A

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Model: 170M3955
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$1,037.61
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Bussmann 170M3955 Class aR High Speed Fuse, 125A

The Bussmann 170M3955 is a Class aR high speed fuse engineered for semiconductor-grade overcurrent protection in demanding DC power systems. Rated 125A RMS with a voltage rating of 700 Vac (UL) / 600 Vac (IEC), this fuse delivers a 150 kAIC interrupt rating for high fault-current environments. It is IEC Rated and UL Recognized, making it suitable for DC common bus, DC drives, power converters/rectifiers, and reduced voltage starter applications where precise, fast-acting protection is critical.

Key Features

  • Amperage Rating: 125A RMS current rating for dependable overcurrent protection in DC power applications.
  • Voltage Rating: 700 Vac (UL) / 600 Vac (IEC) supports use across both UL and IEC-rated electrical systems.
  • Fuse Class: Class aR construction provides semiconductor-style fast clearing for DC drives, converters, and rectifiers.
  • Interrupt Rating: 150 kAIC interrupt rating delivers high fault-current withstand capability for demanding installations.
  • Clearing Characteristics: Pre-arc I2t of 1450 and clearing I2t of 8600 at 1000V for precise coordination in circuit protection design.
  • Fuse Indicator: Non Indicating design with a square body, flush end contact configuration.
  • Watt Losses: 40W rated power loss.
  • Mounting Method: Flush mounting, standard packaging type.

Certifications & Compliance

  • IEC Rated
  • UL Recognized
  • CE Marked
  • RoHS Compliant

Technical Specifications

  • Amperage Rating: 125A
  • Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
  • Class: Class aR
  • Clearing I2t: Clearing at 1000V: 8600
  • Current Rating: 125A RMS
  • Fuse Indicator: Non Indicating
  • Interrupt Rating: 150 kAIC
  • Packaging Type: Standard
  • Pre Arc I2t: 1450
  • Voltage Rating: 700 Vac (UL), 600 Vac (IEC)
  • Watt Losses: 40W
  • Product Type: Square body flush end contact, -BKN/- type K indicator for micro
  • Product Length: 5.433 IN
  • Product Details: Square body flush end contact, -BKN/- type K indicator for micro
  • Mounting Method: Flush
  • Product Height: 2.087 IN
  • Product Weight: 1.6456 LB
  • Product Width: .315 IN

Typical Applications

  • DC Common Bus Protection
  • DC Drives and Motor Control Systems
  • Power Converters and Rectifiers
  • Reduced Voltage Starters
  • Industrial DC Power Distribution

Why Bussmann?

Bussmann fuses are built for reliable, code-compliant performance in critical electrical systems. The 170M3955 combines IEC Rated and UL Recognized construction with CE Marked and RoHS Compliant manufacturing, backed by a 150 kAIC interrupt rating for demanding DC power protection applications. This makes it a dependable choice for professionals specifying high speed fuses in industrial and commercial installations.

Manufacturer Resources

Product Specs

Amperage Rating:
125A
Class:
Class aR
Clearing I2t:
Clearing at 1000V: 8600
Current Rating:
125A RMS
Fuse Indicator:
Non Indicating
Interrupt Rating:
150 kAIC
Packaging Type:
Standard
Pre Arc I2t:
1450
Voltage Rating:
700 Vac (UL), 600 Vac (IEC)
Watt Losses:
40W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Length:
5.433 IN
Mounting Method:
Flush
Product Height:
2.087 IN
Product Weight:
1.6456 LB
Product Width:
.315 IN

Bussmann 170M3955 – Frequently Asked Questions

How fast can I get the Bussmann 170M3955 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 170M3955 come with a warranty?
Absolutely. The Bussmann 170M3955 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 170M3955?
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 170M3955 from ZenSupply?
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