Ferraz Shawmut A4J20 Amp-Trap 20A 600V Class J Fast-Acting Fuse

Price: $17.00
  • SKUFJ016F
In stock - 10 units available.
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Ferraz Shawmut A4J20 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) A4J20 is a 20-amp, 600-volt Amp-Trap A4J Class J fuse with ferrule terminals.

ManufacturerMersen (Ferraz Shawmut)
SeriesAmp-Trap A4J
Catalog NumberA4J20
Fuse ClassClass J
Amperage20 A
Max Voltage600 V AC
DC Rating300 V DC (100 kA)
Interrupting Rating200 kA AC
SpeedFast-acting
Terminals / MountingFerrule (Class J)
ConditionSurplus, inspected and tested
Product StatusActive

More Details

The A4J20 is a 20-amp, 600-volt fast-acting Class J fuse from the Mersen Amp-Trap A4J line. With no intentional time delay, it is best suited to feeders, heaters, transformer secondaries and other non-motor loads, or wherever let-through energy needs to be kept as low as possible. It fits the 0–30A Class J holder in control panels and compact disconnects; for motor circuits, a time-delay Class J fuse is the usual choice in the same holder. It is rated 600VAC and 300VDC, with a 200 kA AC interrupting rating. Every fuse we ship is inspected and tested first.

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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