Why Choose the Mersen ATQR1-1/2 Time-Delay Fuse?
The Mersen ATQR1-1/2 is a 1.5 A Class CC time-delay fuse engineered to provide dependable branch-circuit protection for industrial control systems, control transformers and other equipment exposed to temporary inrush currents. As part of the Mersen Amp-Trap 2000® ATQR series, it combines high current-limiting performance with a compact rejection-style cartridge design for superior circuit protection.
Rated at 600 V AC and 300 V DC, the ATQR1-1/2 is specifically designed to withstand the brief magnetising currents generated when transformers, relays, solenoids and similar inductive loads are energised. Its time-delay characteristic helps prevent nuisance fuse operation while providing reliable protection against sustained overloads and short-circuit faults.
The rejection-style Class CC cartridge design helps prevent installation of an incorrect fuse type when used with compatible Class CC fuse holders. This makes the ATQR1-1/2 an excellent choice for industrial control panels, OEM machinery and electrical distribution systems where reliable branch-circuit protection is essential.
Key Advantages
- Class CC branch-circuit protection for industrial electrical systems.
- 1.5 A current rating for control transformers and low-power circuits.
- 600 V AC / 300 V DC ratings for demanding industrial applications.
- Time-delay characteristic accommodates transformer and inductive-load inrush currents.
- Current-limiting construction helps minimise fault energy.
- Rejection-style body reduces the risk of incorrect fuse replacement.
Key Features
- Mersen Amp-Trap 2000® ATQR series.
- 1.5 A rated current.
- 600 V AC / 300 V DC rated voltage.
- Class CC time-delay fuse.
- Current-limiting design.
- 200 kA RMS symmetrical AC interrupting rating.
- Ferrule-style cartridge terminals.
- Compatible with Class CC rejection fuse holders.
The Mersen ATQR1-1/2 is designed to protect circuits supplying control transformers and other inductive loads that experience temporary inrush currents during energisation. Its time-delay characteristic allows these normal operating conditions while providing rapid protection against overloads and high-level fault currents.
Its current-limiting construction rapidly interrupts severe faults, helping reduce thermal and mechanical stress on conductors, terminals and connected equipment. The rejection-style design also ensures compatibility only with correctly rated Class CC fuse holders.
Typical Applications
- Industrial control transformers.
- PLC and automation control panels.
- Relay and solenoid circuits.
- Motor-control auxiliary circuits.
- OEM machinery.
- Industrial electrical distribution branch circuits.
