Bussmann 170M3267 Eaton Series...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,020.16
Bussmann 170M3267 Eaton series high speed square body fuse, 1250V (IEC), 1300V (UL), 315A, 200 kAIC, Other, Fuse, Blade end X blade end, Class aR, DIN 43 620 - 170M3267

Bussmann 170M3267 Eaton Series High-Speed Square Body Fuse, 315A, Class aR

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Model: 170M3267
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Bussmann 170M3267 Eaton Series High-Speed Square Body Fuse, 315A, Class aR

The Bussmann 170M3267 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection duty. Rated 1250V (IEC) / 1300V (UL) with a 315A amperage rating and a 200 kAIC interrupting rating, this Class aR fuse uses a blade end X blade end connection per the DIN 43 620 mounting standard. It is built for accompanied semiconductor protection (Utilization Category aR) in high-speed circuit protection applications.

Key Features

  • Amperage Rating: 315A high-speed fuse for demanding overcurrent protection duty.
  • Voltage Rating: 1250V (IEC), 1300V (UL), with a 690 V AC voltage rating, for high-voltage power electronics circuits.
  • Interrupting Rating: 200 kAIC for reliable performance under high fault-current conditions.
  • Fuse Shape: Square body with slotted center bolted tags for a secure blade end X blade end connection.
  • Utilization Category: Class aR, accompanied semiconductor protection, mounted per DIN 43 620.
  • Let-Through Characteristics: Pre-arc I2t of 7000 and clearing I2t of 46500 at 660 V, with a clearing loss of 50, for predictable current-limiting performance.
  • Application: Purpose-built for semiconductor protection in power conversion and drive equipment.

Certifications & Compliance

  • UL Recognized
  • CE Marked

Technical Specifications

  • Amperage Rating: 315 A
  • Application: semiconductor protection
  • Certifications: UL Recognized
  • Clearing I2t: 46500 at 660 V
  • Clearing Loss: 50
  • Compliances: CE Marked
  • Fuse Shape: Square body, slotted center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 7000
  • Product Height: 62 mm
  • Product Length Depth: 290 mm
  • Product Weight: .322 g
  • Product Width: 142 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC

Typical Applications

  • Semiconductor Protection for Power Electronics
  • Rectifier and Converter Circuit Protection
  • High-Speed Overcurrent Protection in Industrial Drives
  • Accompanied Fuse Protection per Class aR Utilization Category
  • Industrial and Commercial Power Distribution Equipment

Why Bussmann?

Bussmann by Eaton engineers the 170M3267 as a Class aR, high-speed square body fuse specifically for accompanied semiconductor protection, backed by UL Recognition and CE marking. With a 200 kAIC interrupting rating, defined pre-arc and clearing I2t characteristics, and a DIN 43 620 blade end X blade end mounting configuration, it delivers the dependable, code-recognized current-limiting performance that power electronics and industrial drive systems require.

Manufacturer Resources

Product Specs

Amperage Rating:
315 A
Application:
semiconductor protection
Certifications:
UL Recognized
Class:
Class aR
Clearing I2t:
46500 at 660 V
Clearing Loss:
50
Compliances:
CE Marked
Connection:
Blade end x blade end
Fuse Indicator:
Other
Fuse Shape:
Square body, slotted center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
200 kAIC
Mounting Method:
DIN 43 620
Packaging Type:
Standard
Pre Arc I2t:
7000
Product Height:
62 mm
Product Length Depth:
290 mm
Product Weight:
.322 g
Product Width:
142 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
690 V
Voltage Type:
AC
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M3267 – Frequently Asked Questions

1) Is a Class aR fuse like the Bussmann 170M3267 enough to protect a drive on its own?
No. Class aR means accompanied semiconductor protection, so the 170M3267 handles short-circuit and high-speed fault duty only and has to work alongside a separate overload protective device such as the drive's electronic overload or an upstream breaker. If you need a fuse that covers both overload and short circuit in one device, you want a gR/gS full-range semiconductor fuse instead.
2) What voltage and fault current can the 170M3267 315A fuse handle?
The fuse carries a 690 V AC rating in the spec data, with the Eaton series rated 1250V IEC / 1300V UL, and an interrupting rating of 200 kAIC. That interrupting rating is what matters on a stiff industrial service where available fault current is high. It is an AC-rated device.
3) Do I need the I2t values of the 170M3267 to match my SCR or diode?
Yes, that is the whole point of coordinating a semiconductor fuse. The 170M3267 has a pre-arc I2t of 7000 and a clearing I2t of 46500 at 660 V, with a clearing loss of 50. The device you are protecting must have an I2t withstand rating higher than the fuse's clearing I2t at your operating voltage, or the semiconductor fails before the fuse clears.
4) Does the Bussmann 170M3267 have a blown fuse indicator or microswitch?
The fuse indicator on the 170M3267 is listed as Other, not a standard striker or microswitch option, and it does not come with insulated metal gripping lugs. If your panel relies on a microswitch feeding a trip or alarm circuit, confirm the indicator style on the part you are replacing before you swap it in.
5) Is the Bussmann 170M3267 approved for use in North America and Europe?
It is UL Recognized and CE Marked. UL Recognized means it is a component approval for use inside listed equipment such as a drive or converter panel, not a standalone listed device, which is normal for high-speed semiconductor fuses.
6) Can I use the 170M3267 as a general branch circuit or motor feeder fuse?
No. This is a high-speed fuse built for semiconductor protection in rectifiers, converters and industrial drives. Its fast clearing characteristic is matched to silicon, not to motor inrush or general branch circuit duty, and it is a Class aR accompanied fuse rather than a branch circuit class like J or RK5. For a motor feeder, use the branch circuit fuse class called out on the drawing.
7) What exact part number do I order for this 315A Bussmann high-speed fuse?
Order Bussmann by Eaton 170M3267. It is a single 315A rating, supplied in standard packaging, and the 170M number is the full manufacturer part number, so there are no suffixes to specify.
How fast can I get the Bussmann 170M3267 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 170M3267 come with a warranty?
Absolutely. The Bussmann 170M3267 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 170M3267?
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
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