Ferraz Shawmut RFS250 250A 600V Class H Renewable Fast-Acting Fuse

Retail Price: $1,130.43
Price: $273.75
  • SKUFH125F
In stock - 2 units available.
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Ferraz Shawmut RFS250 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
Talk to a Real Person Questions about fit, condition, or availability? Call 800-664-4377. Credit terms available for approved accounts.
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 Mersen (Ferraz Shawmut) RFS250 is a 250-amp, 600-volt renewable fast-acting Class H fuse with knife-blade terminals.

ManufacturerMersen / Ferraz Shawmut
SeriesRFS renewable
Catalog NumberRFS250
Fuse ClassClass H (renewable)
Amperage250 A
Max Voltage600 V AC
Interrupting Rating10 kA
SpeedFast-acting
Terminals / MountingKnife-blade
RenewableYes
ConditionSurplus, inspected and tested

More Details

Ferraz Shawmut's RFS series, now under the Mersen name, is a line of fast-acting renewable Class H fuses for 600-volt circuits. The RFS250 is rated 250 amps and fits 400A-size knife-blade clips. Unlike Bussmann's Super-Lag RES fuses, the RFS has no intentional time delay, so it's better suited to non-motor loads such as heating, lighting and general feeders than to motor branch circuits. After it interrupts, the renewable cartridge can be opened and fitted with a new link, which kept operating costs low when these fuses were widely installed. The 10 kA interrupting rating means it belongs only where available fault current is modest, and Class H fuses won't enter Class R rejection clips.

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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