Mersen ATQ1-1/2 Midget Fuse 1.5A 500V Time Delay

Product Description

The MERSEN ATQ1-1/2 is a time-delay midget fuse rated at 1.5 amps and 500 volts AC. Midget fuses in the ATQ series are designed for branch-circuit and control-circuit protection in applications where a short time-delay characteristic is required to ride through normal inrush currents without nuisance opening. The compact form factor fits standard 13/32-inch by 1.5-inch midget fuse holders. Licensed electricians and HVAC technicians are the primary installers of this class of fuse in low-amperage control and equipment circuits.

The ATQ1-1/2 is well suited for protecting motor control circuits, control transformers, and sensitive electronic equipment in commercial and light industrial settings. The time-delay action accommodates startup inrush while still providing reliable overcurrent protection under sustained fault conditions. It is also commonly used in HVAC equipment control boards and small motor applications where a standard fast-acting fuse would open prematurely on startup.

Key Features

• 1.5-amp current rating for low-amperage circuit protection
• 500-volt AC rating suitable for commercial control circuits
• Time-delay action prevents nuisance tripping on motor or transformer inrush
• Midget fuse form factor fits standard 13/32-inch by 1.5-inch fuse holders
• Single-element time-delay design for reliable overcurrent response

Compatibility

Designed as an OEM-style replacement midget fuse for standard 13/32-inch by 1.5-inch midget fuse holders used in residential and commercial HVAC control circuits, motor control panels, and industrial control equipment.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with NEC requirements for overcurrent protection. Always de-energize and lockout the circuit before removing or installing a fuse. Verify the replacement fuse amperage and voltage ratings match the equipment nameplate and original fuse specifications before inserting. Never replace a fuse with one of a higher amperage rating as a workaround for repeated fuse failure.