Mersen ATQ1-1/4 Time-delay Midget Fuse 1.25A 500V

Product Description

The MERSEN ATQ1-1/4 is a time-delay midget fuse rated at 1-1/4 amps and 500 volts AC. Midget fuses in the ATQ series are designed for use in Class CC fuse holders and blocks, providing overcurrent protection in compact panel and control circuit applications. The time-delay characteristic allows the fuse to tolerate brief inrush currents without nuisance blowing while still responding quickly to sustained overloads and short circuits. Electricians and controls technicians install this fuse in motor control centers, HVAC control panels, low-voltage circuits, and similar equipment where a small-footprint fuse is required.

This fuse is suited for residential and light commercial HVAC systems, industrial control panels, and any equipment requiring Class CC midget fuse protection up to 500 volts. Its time-delay action makes it appropriate for motor branch circuits and transformer-fed control circuits where initial inrush loads are expected. The fuse ships in a 10-pack, making it a practical stocking item for service vehicles and shop inventory.

Key Features

• 1-1/4 amp current rating with time-delay action for inrush tolerance
• 500 volt AC rating for use in a wide range of control and branch circuits
• Midget fuse form factor fits standard Class CC fuse holders and blocks
• Compact dimensions suit tight panel and control enclosure installations
• Sold in a 10-pack for efficient inventory restocking

Compatibility

Designed as an OEM-style replacement midget fuse for use in Class CC fuse holders and fuse blocks rated for 500 volts and 1-1/4 amps or greater.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the circuit before removing or installing a fuse. Confirm the fuse holder or block is rated for Class CC midget fuses and that the circuit voltage and current do not exceed the fuse ratings. Never substitute a higher-amperage fuse to address nuisance blowing without first diagnosing the root cause of the overcurrent condition.

Technical Specifications

• Current Rating: 1-1/4 amps
• Voltage Rating: 500 volts
• Fuse Type: Time-Delay Midget
• Length: 1.62 inches
• Width: 0.88 inches
• Height: 2.12 inches
• Weight: 0.13 pounds
• Pack Quantity: 10 per pack
• UPC: 78200190350

Standard Information

• Brand: MERSEN
• Manufacturer Part Number: ATQ1-1/4