Bussmann NOS-300 One-Time 300A 600V Class H Fuse

Retail Price: $249.84
Price: $150.00
  • SKUFH300B
In stock - 5 units available.
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Bussmann NOS-300 Fuse

Stock photo shown for reference only. You will receive a unit of the listed catalog number in the condition stated above, inspected and tested to ESP Product Standards. Cosmetic appearance may vary.

1-Year Operational Guarantee Every breaker we sell — new, surplus, reconditioned, or used — is guaranteed to operate normally for one year from date of sale. Product Standards
Same-Day Shipping In-stock orders placed before 12pm PST typically ship the same business day, with UPS tracking provided. Shipping details
30-Day Returns Return authorization available within 30 days of receipt. Return policy
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Found this part for less somewhere else? Surplus and reconditioned prices vary widely with scarcity and condition — tell us what you found and make us an offer. Include the catalog number and we’ll respond same business day: call 800-664-4377 or email us. Every ESP unit is tested and backed by our 1-year operational guarantee — make sure you’re comparing like for like.

Description

The Bussmann NOS-300 is a 300-amp, 600-volt One-Time Class H fuse with knife-blade terminals.

ManufacturerBussmann
SeriesOne-Time
Catalog NumberNOS-300
Fuse ClassClass H
Amperage300 A
Max Voltage600 V AC
Interrupting Rating10 kA
SpeedFast-acting (non-time-delay)
Terminals / MountingKnife-blade
ConditionSurplus, inspected and tested
Product StatusActive

More Details

The NOS is the 600-volt counterpart to Bussmann's NON One-Time fuse. The NOS-300 fits the 201–400A knife-blade clip size on 480V and 600V safety switches and older industrial switchboards. It's a straightforward non-time-delay Class H fuse: a fusible link that opens on overload or fault and is then replaced. Plants with Class H one-time fuses installed often keep the same type for consistency, especially in equipment that predates Class R rejection clips. The interrupting rating is 10 kA, so where fault current is higher, a Class RK5 or RK1 fuse offers current limitation in the same clips. Every fuse we ship is inspected and tested first.

See the manufacturer's data sheet for NOS-300 specifications.

What is "surplus new"?

Surplus new means the item has never been installed or put into service. It may not arrive in its original packaging, but it has never been used.

What does "reconditioned" mean?

Reconditioned items have been inspected, cleaned, and tested to confirm they operate to the manufacturer's original specifications. Every reconditioned item we sell carries a one-year operational guarantee.

How fast will my order ship?

In-stock orders placed before 12pm PST usually ship the same business day via UPS, with tracking provided.

What if I can't find the item I need?

Call 800-664-4377 — we stock thousands of obsolete and hard-to-find electrical parts that may not yet be listed online.

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