Bussmann 100NHM00 NH Fuse, Cla...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$248.13
Bussmann 100NHM00 NH Fuse, Class aM, 690V

Bussmann 100NHM00 NH Fuse, Class aM, 690V

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Model: 100NHM00B-690

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

$248.13
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Bussmann 100NHM00 NH Fuse, Class aM, 690V

The Bussmann 100NHM00 is an Eaton Bussmann series low voltage NH-style fuse engineered for industrial power distribution and switchgear protection. Rated 690V with a 120 kAIC interrupting capacity, this Class aM fuse is built to protect motor circuits and switchgear from short-circuit and overload conditions. It features a combination fuse status indicator for fast visual confirmation of fuse condition, and this fuse platform is available in amp ratings from 16A to 100A to match a range of industrial circuit-protection requirements.

Key Features

  • Voltage Rating: 690V rated construction suited for low-voltage industrial power distribution systems.
  • Interrupting Capacity: 120 kAIC short-circuit rating delivers high interrupting performance for demanding industrial fault conditions.
  • Utilization Category: Class aM (switchgear protection) design, intended for motor circuit and switchgear protection applications.
  • Status Indicator: Combination fuse status indicator allows quick visual verification of fuse condition without de-energizing the circuit.
  • Amp Rating Range: Available in 16A, 20A, 25A, and 100A ratings, allowing selection of the correct fuse for the circuit load.
  • Voltage Type: AC-rated for use on alternating current power distribution systems.
  • Packaging: Standard packaging type for straightforward stocking and handling.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Voltage Type: AC
  • Utilization Category: aM (switchgear protection)
  • Packaging Type: Standard
  • Application: industrial
  • Insulated Metal Gripping Lugs (Imgl): No
  • Compliances: RoHS Compliant

Typical Applications

  • Industrial Electrical Power Distribution
  • Switchgear and Motor Circuit Protection
  • Low-Voltage Combination Motor Starter Circuits
  • Industrial Panelboard and Switchboard Protection
  • Commercial and Industrial Facility Electrical Systems

Why Bussmann?

Bussmann is an Eaton brand recognized for engineering fuses that deliver dependable overcurrent and short-circuit protection in demanding industrial environments. This Class aM, 690V, 120 kAIC-rated fuse combines a high interrupting rating with a convenient status indicator and RoHS-compliant construction, giving electrical professionals a reliable option for switchgear and motor circuit protection across a range of amp ratings.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aM
Voltage Type:
AC
Utilization Category:
aM (switchgear protection)
Packaging Type:
Standard
Product Type:
Fuse
Interrupt Rating:
120 kAIC
Product Details:
fuse
Application:
industrial
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Compliances:
RoHS Compliant
Department:
Electrical
Fuse Indicator:
Combination fuse status indicator
Voltage Rating:
690V
Amperage Rating:
16A-100A
Standards:
RoHS Compliant

Bussmann 100NHM00B-690 – Frequently Asked Questions

1) What does Class aM mean on a Bussmann NH fuse, and can I use it for general overload protection?
Class aM is a partial-range motor circuit protection rating, listed here as aM (switchgear protection). It is built to clear short circuits in motor and switchgear circuits, not to handle general overload duty on its own. On a motor starter it is paired with an overload relay that handles the thermal overload side. If you need a fuse that protects across the full range including overload, aM is the wrong utilization category for the job.
2) Will a 690V NH fuse work on my 480V industrial system?
Yes. The 690V AC rating on the Bussmann NH aM fuse is a maximum, so applying it at 480V or 400V is fine. Fuse voltage ratings must be equal to or greater than the circuit voltage, never less. It is AC rated, so do not apply it to a DC bus.
3) Is this an NH00 size fuse, and will it fit my existing fuse base?
The Bussmann NHM00 690V fuse is an NH size 00 body, which is what the 00 in the part number designates. NH sizes are a standardized IEC form factor, so a size 00 fuse drops into a size 00 fuse base, switch-disconnector, or fuse carrier. It will not fit an NH size 0, 1, 2 or 3 holder. Check the size marking stamped on your existing base before ordering.
4) What amp ratings does the Bussmann NHM00 690V fuse come in?
Four ratings are offered on this NH aM platform: 16A (16NHM000B-690), 20A (20NHM000B-690), 25A (25NHM000B-690), and 100A (100NHM00B-690). The overall published amperage range for the family is 16A to 100A. Match the rating to the motor circuit's short-circuit protection requirement, not to the running current alone, since aM fuses are sized above full load current.
5) Can I tell if this NH fuse has blown without shutting down the panel?
Yes. It has a combination fuse status indicator, so a blown element shows visually on the fuse body. You can confirm condition on an energized circuit without pulling the fuse carrier or de-energizing to test continuity, which is the practical reason maintenance crews spec the indicating version.
6) Does this Bussmann NH fuse have insulated gripping lugs for live fuse changes?
No. The insulated metal gripping lugs (IMGL) option is not present on this NH aM fuse, so the blade tags are bare. Use a properly rated NH fuse puller and appropriate PPE when changing them, and follow your site's de-energization procedure.
7) Where are Class aM NH fuses typically used in a plant?
Industrial power distribution is the stated application: switchgear and motor circuit protection, combination motor starters, and panelboard or switchboard feeders in industrial and commercial facilities. They are an IEC-style fuse, so you will see them in European-built machinery and imported switchgear far more often than in North American UL panels, which typically use Class J, RK5 or CC fuses instead.
8) Does this fuse meet RoHS for our facility procurement requirements?
RoHS compliant is the stated standard on this Bussmann NH aM fuse, which covers restricted hazardous substances for facilities and OEM panel builders that require it on their bill of materials.
How fast can I get the Bussmann 100NHM00B-690 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 100NHM00B-690 come with a warranty?
Absolutely. The Bussmann 100NHM00B-690 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 100NHM00B-690?
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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