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JTD_ID Series Indicator
JTD_ID Series Indicator ® POWR-PRO ® Class J Fuses
600 VAC • Time Delay • 8/10 – 600 Amperes
Applications
Fused combination motor controllers to provide IEC Type 2 (“No
Damage”) motor branch circuit short-circuit and ground fault
protection
Motor control centers
Transformer protection
Protection for UL Listed series rated molded case circuit breaker panels
General purpose circuits — mains, feeders and branch circuits —
especially when space is limited.
Features/Benefits
The Littelfuse POWR-PRO JTD_ID Indicator Class J fuse provides visual
blown fuse indication and maximum protection in a compact package.
The compact Class J package was designed specifically for circuits
where space is at a premium. The current-limiting time delay JTD_ID
offers a patented, true dual-element design that is ideal for use in circuits
with high, in-rush currents. The Superior performance characteristics of
JTD_ID Indicator fuses reduce nuisance fuse opening, and the blown
fuse indication reduces downtime while increasing safety.
• Reduce downtime — A glance at the indicating window of a JTD_ID
Indicator fuse pinpoints open fuses immediately. If the indicating
window is dark, the fuse has opened. It’s that simple.
• Reduce nuisance opening — Indicator fuses have superior time-delay
and cycling characteristics which can lengthen fuse life and decrease
needless opening.
• Reduce fuse inventory — JTD_ID Indicator fuses have superior
performance characteristics, which means they can be used on a
variety of applications; therefore, decreasing fuse inventory.
• Reduce equipment damage — Indicator fuses provide superior
overload and short-circuit protection that can reduce equipment
damage. Indicator fuses also provide IEC Type 2 “No Damage”
protection to IEC and NEMA type motor starters.
• Reduce accidents — The JTD_ID Indicator fuse improves safety
by minimizing exposure to live circuits. Unlike other forms of blown
fuse indication, once the indicating window darkens, it stays dark. It
does not matter if the power is on or off or if the fuse is in a tool box.
Other forms of indication require the power to remain on, which is a
safety hazard for personnel.
Specifications
Ampere Ratings
Voltage Ratings:
AC: 600 Volts
8 10
2 8 10
7
30
100
350
DC: 300 Volts ( 8 10 – 100A)
1
3
8
35
110
400
500 Volts (110 – 600A)
1 1 4
3 2 10
9
40
125
450
Interrupting Ratings:
AC: 200,000 amperes rms symmetrical
1 1 2
3 1 2
10
45
150
500
300,000 amperes rms symmetrical
1 6 10
4
12
50
175
600
(Littelfuse self-certified)
1 8 10
4 1 2
15
60
200
Ampere Range:
8/10 – 600 amperes
2
5
17 1 2
70
225
Approvals:
AC: Standard 248-8, Class J
2 1 4
5 6 10
20
80
250
ULListed (File No: E81895)
2 1 2
6
25
90
300
CSA Certified (File No: LR29862)
Example part number (series & amperage): JTD 60 ID
DC: Littelfuse self-certified
8 10 - 100A: 300VDC self certified
Recommended Fuse Blocks
110 – 600A: 500VDC self certified
LJ600 series, LPSJ series
Refer to Blocks & Holders section of this catalog for additional information.