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Circuit Protection / Fuses / Disconnects > Fuses & Fuse Holders > Current Limiting Class T

Current Limiting Class T

Edison class T extremely fast-acting fuses are compact current-limiting devices ideal as main fuse protection for panel boards, load centers and meter stacks. In ratings up to 600A, Class T (fast-blow) fuses are also recommended for non-inductive loads such as lighting and resistance-heating circuits.

Class T (300V, 1 - 200 Amp)

Class T (300V, 225 - 600 Amp)

Class T (600V, 1 - 200 Amps)

Class T (600V, 225 - 600 Amps)

Current Limiting Class T Industrial Fuses

Class T Fuses - Current Limiting - fast blow fuses

Extremely Fast-Acting Class T Edison Fuses

TJN and TJS Class T fuses are extremely fast-acting industrial fuses in a compact, space-saving size. These Edison fuses are ideal as the main fuse protection for panel boards, load centers, meter stacks, and AC drives. These type T fuses are also referred to as fast blow fuses or high speed fuses.

Class TJN: 300 VAC, 1-200 Amp, 225-600 Amp
Class TJS: 600 VAC, 1-200 Amp, 225-600 Amp

Current limiting class T fuses start at
$10.00 each
(sold in 1, 5 or 10 fuses per pack)

Class T Fuses Overview

Features

Extremely current limiting
High speed fuse; no intentional time delay; opens very quickly on overload
Silver link construction provides superior component protection against fault currents
Space saving dimensions

Applications

Recommended for protection of non-inductive loads such as lighting and resistance-heating circuits
Use to protect lower interrupting- rated circuit breakers when series rated with Class T fuses
For motor protection, size at 300% FLC; provides short-circuit protection only
Drive fuses: Use for short-circuit protection of AC drives

Specifications

Voltage Rating:
- TJN: 300 VAC
- TJS: 600 VAC
Ampere Ratings: 1–600 Amps
Interrupting Rating: 200,000
RMS Symmetrical Amps
Self-Certified Voltage Ratings (DC):
- TJN (15–600): 160 VDC
- TJS (15–400): 300 VDC
Self-Certified Interrupting Ratings (DC):
- TJN (15–600): 20,000 Amps DC
- TJS (15–400): 10,000 Amps DC
Current Limiting: Class T Fuse