Why Choose the Mersen ATQR17-1/2 Class CC Fuse?
The Mersen ATQR17-1/2 is a compact and dependable Class CC time-delay fuse designed to protect control transformers, solenoids, contactors, relays and other inductive electrical loads. As part of the established Mersen Amp-Trap® 2000 ATQR series, it combines effective current-limiting performance with the ability to withstand temporary inrush currents during transformer energisation and equipment start-up.
Its time-delay operating characteristic helps prevent unnecessary fuse operation during normal inrush conditions while providing rapid interruption of damaging short circuits and sustained overcurrents. The rejection-style Class CC construction also helps prevent incompatible fuse types from being installed when the ATQR17-1/2 is used with a suitable Class CC fuse holder.
With a rated current of 17.5 A, a maximum AC voltage rating of 600 V and a DC voltage rating of up to 300 V, the ATQR17-1/2 is suitable for industrial control panels, machinery and automation systems. Its compact cylindrical format supports space-efficient installation, while its high interrupting capacity provides reliable protection in demanding electrical environments.
Key Advantages
- Compact Class CC time-delay fuse for industrial control applications.
- 17.5 A current rating for transformers and inductive electrical loads.
- 600 V AC and 300 V DC voltage ratings for versatile industrial use.
- Time-delay operation withstands normal transformer and equipment inrush currents.
- Current-limiting construction helps reduce damaging fault energy.
- Rejection-style design helps prevent the installation of unsuitable replacement fuses.
Key Features
- Mersen Amp-Trap® 2000 ATQR series.
- 17.5 A rated current.
- 600 V AC maximum voltage rating.
- 300 V DC maximum voltage rating.
- Class CC rejection-style cylindrical fuse construction.
- Time-delay characteristic for inductive load protection.
- High interrupting capacity for demanding industrial circuits.
- Compact ferrule format for space-efficient panel installation.
Control transformers and inductive devices can draw a temporary surge of current when first energised. The Mersen ATQR17-1/2 is designed to tolerate these normal inrush currents, helping reduce nuisance fuse operation while maintaining dependable protection against sustained overloads and short circuits.
During a high-level electrical fault, its current-limiting construction restricts the peak current and energy passing through the circuit. This helps protect transformers, conductors, contactors and downstream control equipment while reducing the likelihood of extensive equipment damage and unplanned production downtime.
Typical Applications
- Industrial control transformers.
- Solenoids, relays and contactors.
- Motor control centres and electrical panels.
- Machine tools and automated production machinery.
- Heating, ventilation and air-conditioning control circuits.
- OEM machinery and industrial automation systems.
