Mersen ATQR1-1/8 600V Cc Time Delay Fuse 1-1/8 Amp

Product Description

The MERSEN ATQR1-1/8 is a 600-volt, Class CC time-delay fuse rated at 1-1/8 amps, designed for use in low-amperage branch circuit and control circuit protection. The time-delay characteristic allows the fuse to tolerate brief inrush currents without nuisance opening, while still responding quickly to sustained overloads and short-circuit faults. This fuse is installed by licensed electricians in commercial and industrial panels, control enclosures, and equipment requiring Class CC-rated overcurrent protection. The compact Class CC form factor ensures rejection fitment, preventing the substitution of a lower-rated fuse class.

This fuse is suited for residential and light commercial control circuits, small motor branch circuits, and instrumentation panels where 600-volt Class CC protection is specified. Typical applications include HVAC control boards, transformer primary protection, and low-amperage motor starter circuits. The time-delay design is particularly useful in motor circuits where startup inrush would otherwise cause nuisance fuse failures with a standard fast-acting element.

Key Features

• 600-volt maximum voltage rating for Class CC fuse applications
• 1-1/8 amp current rating with time-delay response characteristic
• Class CC rejection form factor prevents substitution of inferior fuse classes
• Time-delay element tolerates motor inrush and transformer magnetizing current
• Suitable for branch circuit and control circuit overcurrent protection up to 600 volts

Compatibility

Designed as a direct-fit replacement for Class CC time-delay fuse holders and fusible disconnect blocks rated for 600-volt, 1-1/8 amp Class CC fuses.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the circuit before replacing fuses. Verify the fuse holder is rated for Class CC fuses and that the replacement amp rating matches the circuit design exactly. Never substitute a higher-amp fuse or a different fuse class, even temporarily.

Technical Specifications

• Voltage Rating: 600 volts
• Amperage Rating: 1-1/8 amps
• Fuse Class: CC
• Response Type: Time Delay (TD)
• UPC: 78200190638

Standard Information

• Brand: MERSEN
• Manufacturer Part Number: ATQR1-1/8