This document describes the features and characteristics of A70QS Amp-trap® Semiconductor Protection fuses, including lower I2t, longer life, lower watts loss, and superior cycling ability. The product is designed to protect dynamic solid state equipment such as motor drives and UPS.
A70QS Amp‑trap® semiconductor protection fuses are designed for 700 V AC/DC applications such as motor drives, UPS and other dynamic solid‑state equipment. They feature very low I²t for improved protection, superior cycling ability for long life under high cyclic loading, and low watts loss for cooler operation.
The catalog provides a range of current ratings from 35 A to 800 A, various mounting styles (blades, bolt‑in), and UL‑recognized short‑circuit capability of 200 kA LR. Compact dimensions allow designers to down‑size equipment while maintaining high performance.
| Voltage rating | 700 V AC/DC |
|---|---|
| Current rating range | 35–800 A |
| Short‑circuit rating | 200 kA LR |
| Mounting type | Blades, bolt‑in |
| Physical size | Ultra‑compact |
A70QS fuses are rated for 700 V AC/DC.
They are rated for a 200 kA LR short‑circuit current.
The catalog lists fuses from 35 A up to 800 A, with many intermediate ratings such as 100 A, 200 A, 300 A, etc.