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Cylindrical 300 amp fuse with silver end caps

OEM Industries

OEM Industries CNL 300A DC48V/AC125V RQD-1 line protection

SKU CH-QVKA-S9KTG

A 300 A circuit protector rated for 48 V DC and 125 V AC line protection

  • Amperage300
  • Product typeCircuit Protectors
  • 300 A rating protects heavy-duty circuits
  • Dual DC 48 V and AC 125 V voltage coverage
  • CNL series bolt-on design for secure mounting
  • RQD-1 form factor fits standard automotive fuse blocks
  • New condition ensures full factory specification performance

CNL 300A DC48V/AC125V fuse

The CNL 300A is a circuit protector rated for 300 amps at 48 volts DC or 125 volts AC. It is built for automotive and generator circuits that need reliable overcurrent protection at those voltages. Installers working on DC power distribution or AC line safety will find it matches the specified ratings.

Simple bolt-in installation

The fuse fits standard CNL series holders and secures with bolts, so no special tools are required. The main issue occurs when the holder or busbar is corroded or loose, which creates resistance and nuisance heating. Clean contact surfaces and proper torque prevent that problem.

Verify voltage and holder compatibility

Before ordering, confirm the circuit operates at or below 48 volts DC or 125 volts AC and that the existing fuse block accepts the CNL 300A form factor. Using it above those voltages or in an incompatible holder defeats the protection.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $48.99
Cheaper than about 56% of the 1,135 comparable items (median $54.99).

Specifications

Product
Product lineCNL 300A
Model nameCNL 300A
Product typeCircuit Protectors
Power
Amperage300

Questions about this item

How can I confirm the CNL 300A fuse is operating correctly after installation?

Verify that the protected circuit carries up to 300 A without interruption and that the fuse element remains intact under normal load at 48 V DC or 125 V AC.

What is included in the package and what must be purchased separately?

The package contains the CNL 300A fuse unit; a compatible fuse holder or block rated for 300 A at 48 V DC / 125 V AC must be sourced separately.

Which CNL 300A version should I select for a 48 V DC system versus a 125 V AC system?

The same CNL 300A model covers both 48 V DC and 125 V AC applications, so choose it when your nominal voltage does not exceed either rating.

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