Littelfuse JTD150ID POWR-PRO C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$121.59
Littelfuse JTD150ID POWR-PRO Class J Time-Delay Indicator Fuse, 150A

Littelfuse JTD150ID POWR-PRO Class J Time-Delay Indicator Fuse, 150A

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Model: JTD150ID

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

$121.59
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Littelfuse JTD150ID POWR-PRO Class J Time-Delay Indicator Fuse, 150A

The Littelfuse POWR-PRO JTD_ID Series JTD150ID is a Class J time-delay fuse rated 150A at 600VAC/500VDC, built in a compact knife-blade package for circuits where panel space is at a premium. Its patented true dual-element design delivers current-limiting time delay for circuits with high inrush currents, while the built-in blown-fuse indicator window darkens permanently the moment the fuse opens – giving maintenance personnel instant visual confirmation without power or testing. The JTD150ID is UL Listed and CSA certified, making it suitable for mains, feeders, branch circuits, motor control centers, and other demanding industrial and commercial electrical applications.

Key Features

  • Ampere Rating: 150A for dependable overcurrent protection on mains, feeders, and branch circuits.
  • Voltage Rating: 600VAC / 500VDC supports a broad range of AC and DC circuit applications.
  • Interrupting Rating: 20,000A@500VDC for reliable performance under demanding short-circuit conditions.
  • Time-Delay Opening: Slo-Blo/Time Lag (T)/Time Delay characteristic with a patented true dual-element design reduces nuisance fuse opening in circuits with high inrush currents.
  • Blown-Fuse Indication: The indicating window darkens once the fuse opens and stays dark regardless of power state, allowing operators to pinpoint an open fuse at a glance and reducing downtime and testing time.
  • Compact Class J Package: Knife-blade package size designed specifically for space-constrained enclosures and panels.
  • IEC Type II Protection: Delivers IEC Type II "No Damage" short-circuit and ground-fault protection to IEC and NEMA type motor starters, helping reduce equipment damage.

Certifications & Compliance

  • UL Listed (UL JDDZ E81895)
  • CSA Certified (CSA 1422-02 029862)

Technical Specifications

  • VAC (V): 600
  • VDC (V): 500
  • Ampere Rating (A): 150

Typical Applications

  • Fused Combination Motor Controllers Requiring IEC Type II (No Damage) Protection
  • Motor Control Centers
  • UL Listed Series-Rated Molded Case Circuit Breaker Panels
  • Transformer Protection
  • General-Purpose Mains, Feeders, and Branch Circuits
  • Space-Constrained Panels and Enclosures

Why Littelfuse?

Littelfuse backs the JTD150ID POWR-PRO Class J fuse with UL Listing and CSA certification, giving specifiers confidence in code-compliant performance for professional electrical installations. The patented true dual-element, time-delay construction reduces nuisance opening while the permanent blown-fuse indicator improves safety by minimizing personnel exposure to live circuits and speeding up troubleshooting. For facilities that need compact, reliable overcurrent protection with faster fault identification, the Littelfuse JTD_ID Series delivers superior protection and reduced downtime.

Product Specs

Product Type:
Time-Delay Fuse
Series:
JTD_ID
Voltage Rating:
600VAC/500VDC
Amperage Rating:
150A
Configuration:
Time-Delay
Listing:
UL Listed
Standards:
CSA
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Fuses

Littelfuse JTD150ID – Frequently Asked Questions

1) Will a Littelfuse JTD150ID work in a 480V motor control center?
Yes. The JTD150ID is rated 600VAC, so it covers 480V and 208/240V AC systems, and it is also rated 500VDC. Littelfuse lists motor control centers and fused combination motor controllers among its intended applications, and it provides IEC Type II "no damage" short-circuit and ground-fault protection to IEC and NEMA type motor starters.
2) What does the ID suffix on the Littelfuse JTD150ID mean?
ID stands for indicator. The fuse carries a built-in blown-fuse indication window that darkens permanently the moment the fuse opens and stays dark whether or not the circuit is energized. An electrician can identify the open fuse by sight instead of pulling fuses and testing them, which keeps hands away from live circuits and shortens troubleshooting. The non-indicating version of the same Class J time-delay fuse is the JTD series without the ID suffix.
3) Can I use a Class J fuse like the JTD150ID in place of a Class H or Class R fuse holder?
No. Class J fuses use their own dimensions and a knife-blade package that is shorter than Class H/R fuses of the same amperage, so a 150A Class J will not drop into a Class H or Class R clip, and a Class H fuse will not fit a Class J block. Class J fuse blocks or switches are required, which is actually the point of the design: the compact Class J body is intended for space-constrained panels and enclosures.
4) Is the Littelfuse JTD150ID time-delay or fast-acting, and which do I need for a motor circuit?
Time-delay. The JTD150ID uses a patented true dual-element construction that rides through motor starting inrush and transformer magnetizing current without opening, while still current-limiting on a short circuit. That is what you want on motor branch circuits, motor controllers and transformer primaries. A fast-acting Class J is the choice only for non-inrush loads such as resistive or electronic circuits where you want the quickest clearing possible.
5) I need to replace a blown 150A Class J fuse in a panel. What exact part do I order?
Order the Littelfuse JTD150ID from the POWR-PRO JTD_ID series: 150A, 600VAC/500VDC, Class J, time-delay, with the blown-fuse indicator. If the existing fuses in the panel have no indicator window, the indicating version still fits the same Class J block, so you can standardize the whole panel on the ID version as fuses are replaced. Fuses in the same set should be the same class, amperage and speed.
6) Is the JTD150ID UL Listed and approved for use in Canada?
Both. It is UL Listed under UL JDDZ E81895 and CSA Certified under CSA 1422-02 029862, so it is acceptable for Canadian installations as well as US ones. The JDDZ category is the UL listing for Class J time-delay fuses.
7) What is the interrupting rating of the Littelfuse JTD150ID on a DC circuit?
20,000A at 500VDC. That is the figure to use when you are checking a DC bus or battery-backed circuit against available fault current. On AC the fuse is rated 600VAC.
8) Can the JTD150ID be used for series rating with molded case circuit breakers?
Yes, Littelfuse lists UL Listed series-rated molded case circuit breaker panels as an application for this fuse. Series ratings are only valid for the specific fuse and breaker combinations tested and marked by the panel manufacturer, so match the fuse class and amperage to what the panel label calls out.
How fast can I get the Littelfuse JTD150ID 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 Littelfuse JTD150ID come with a warranty?
Absolutely. The Littelfuse JTD150ID 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 Littelfuse JTD150ID?
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
Why buy the Littelfuse JTD150ID from ZenSupply?
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