GYL9 residual current devices provide leakage-current protection for AC distribution circuits, renewable-energy systems, and EV charging applications. The series is organized by residual-current action type so the required protection behavior can be selected by application.
Variant Coverage
| Variant | Residual current action type | Typical application |
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| GYL9-AC | Type AC, A, AC-S, A-S, A-Si, AC-Si options listed | General residential and commercial AC leakage protection |
| GYL9-B | Type B | Circuits with inverters, frequency converters, photovoltaic equipment, medical equipment, data centers, and other DC-component loads |
| GYL9-EV | Type EV | EV charging circuits requiring detection of AC leakage, pulsating DC leakage, composite waveforms, and smooth DC residual current at 6mA or greater |
Shared Ratings
| Rated voltage | 230/240V, 240/415V or 230/400V, 240/415V by variant |
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| Rated current | 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A depending on variant |
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| Rated residual operating current | 0.03A, 0.1A, 0.3A |
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| Poles | 1P+N, 3P+N |
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| Rated insulation voltage | 500V |
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| Rated limit short-circuit current | 6000A, 10000A |
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| Mounting | TH35-7.5 standard guide rail |
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