Mersen A70QS32-14F

These Premium Amp-trap French Cylindrical Semiconductor Fuses are an extension of the popular A70QS product line. They are solid-fill 14mm and 22mm fuses IEC rated 690VAC, 200kA Interrupting and 700VDC, 100kA interrupting at 10ms time constant. In addition, these fuses have an 890 VDC rating for capacitor discharge applications up to 2.5ms time constant. All ampere ratings are available with a striker. Applications include small inverter drives and UPS systems, with superior I²t for improved protection and performance.

The Mersen A70QS32-14F is a high-speed cylindrical fuse from the Amp-Trap® A70QS series, specifically engineered for the protection of sensitive semiconductor devices. It is a critical safety component for modern power electronics, providing reliable and extremely fast-acting protection against short-circuit currents.

This fuse is rated for 32 Amperes (A) and is designed to operate at voltages up to 690V AC and 700V DC. Its superior design allows it to safely interrupt very high fault currents, with an interrupting rating of 200 kA for AC circuits and 100 kA for DC circuits.

The key feature of the A70QS series is its extremely low let-through energy, denoted by a very low I²t value. This ensures that in the event of a fault, the fuse disconnects the circuit before the current can rise to a level that would damage power electronic components like diodes, thyristors, GTOs, and IGBTs. It operates with an aR class characteristic, meaning it provides excellent...