Cooper Bussmann JJS-80 Class T Fuse 80A 600V

Product Description

The COOPER BUSSMANN JJS-80 is a Class T fast-acting cartridge fuse rated for 80 amps at 600 volts AC. It carries an interrupting rating of 200 kA at AC RMS, making it suitable for circuits where high fault-current protection is required. The bolt-on mount design seats the fuse securely in compatible fuse blocks and disconnect switches. Electricians and industrial maintenance technicians install this fuse in panelboards, motor controls, and power distribution equipment where Class T fusing is specified. At 0.11 pounds and 0.75 inches in diameter, it is a compact, purpose-built overcurrent protection device.

This fuse is intended for general-purpose electrical applications in commercial, industrial, and light industrial settings. Class T fuses are commonly used in situations where space-saving fuse holders are required and where high interrupting capacity is critical. The fast-acting response characteristic makes it well suited for feeder circuits, service entrance equipment, and branch circuit protection where downstream equipment does not require time-delay fusing. Licensed electricians typically handle installation and replacement of this fuse class.

Key Features

• 80-amp continuous current rating at 600 volts AC
• 200 kA interrupting rating at AC RMS for high-fault-current environments
• Fast-acting fuse timing for immediate overcurrent response
• Bolt-on mount type for secure, low-resistance seating in fuse blocks
• CE Certified, CSA C22.2 No. 248.15 Class 1422-02 File 53787 Certified, and UL Listed 248-15 Class T Guide JDDZ File E4273
• Compact cartridge body: 0.75 inches diameter, 54.80 mm overall length

Compatibility

Designed for use in Class T fuse holders and bolt-on fuse blocks rated for 600-volt, 80-amp Class T cartridge fuses. Verify holder dimensions and ampere rating before installation.

Installation Notes

Installation and replacement must be performed by a qualified electrician in accordance with the NEC and applicable local codes. De-energize and lock out the circuit before servicing any fuse or fuse holder. Use properly rated fuse pullers when removing or inserting cartridge fuses — never handle energized fuses by hand. Confirm the replacement fuse class, amperage, and voltage rating match the circuit requirements before reinstalling power.