QC91 Series Marine Magnetic Starter
Overview
The QC91 series marine magnetic starters are applicable in AC 50Hz, 380V or 60Hz, 440V electrical circuits. They are used to directly control the start, stop, and reversible operation of three – phase asynchronous motors, and also provide protection against motor overload, phase – break, and short – circuit.
Type and its meaning Type specification
QC91 – □ □ / □
- “QC91”: Represents the marine magnetic starter
- The first “□”: Circuit number
- The second “□”: Protection type (S for thermal – relay protection, D for fuse – protection)
- The third “□”: Rated working current (A)
- Design serial number
Basic parameters
| Model | Starting method | Rated working current (A) | Maximum motor power (380V/50Hz, 440V/60Hz) |
|---|---|---|---|
| QC91 – 20 | Direct – on – line start | 20 | 7.5/11 |
| QC91 – 40 | Direct – on – line start | 40 | 18.5/22 |
| QC91 – 63 | Direct – on – line start | 63 | 30/37 |
| QC91 – 100 | Direct – on – line start | 100 | 55/55 |
| QC91 – 160 | Direct – on – line start | 160 | 90/90 |
| QC91 – 20 | Reversible start (Y – Δ) | 20 | 18.5/22 |
| QC91 – 40 | Reversible start (Y – Δ) | 40 | 37/40 |
| QC91 – 63 | Reversible start (Y – Δ) | 63 | 55/63 |
| QC91 – 100 | Reversible start (Y – Δ) | 100 | 90/100 |
| QC91 – 160 | Reversible start (Y – Δ) | 160 | 140/150 |
| QC91 – 250 | Auto – transformer step – down start (1st, 2nd stage) | 250 | 132/147 |
| QC91 – 400 | Auto – transformer step – down start (1st, 2nd stage) | 400 | 200/220 |
| QC91 – 630 | Auto – transformer step – down start (1st, 2nd stage) | 630 | 315/375 |
| QC91 – 800 | Auto – transformer step – down start (1st, 2nd stage) | 800 | 400/450 |
Attention please: The description may be different with the product, please contact us for quotation.
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