XLSCB Series surge protective backup protectors are used with surge protective devices to interrupt power-frequency fault current while withstanding surge impulse current. XLSCB and XLSCB2 share the same coordination purpose, with different pole availability, breaking behavior and dimensional ranges.
Common Parameters
| Rated Working Voltage Ue | 230/400VAC |
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| Current Trip Value Ii | 3 ± 1A |
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| Non-Tripping Impulse Current le (8/20µs) | 10kA, 20kA, 40kA, 60kA, 80kA, 100kA, 120kA, 160kA |
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| Non-Tripping Impulse Current le (10/350µs) | 15kA, 25kA |
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| Maximum Short-Circuit Breaking Capacity Icn | 15kA, 25kA, 35kA, 50kA, 65kA |
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| Installation Method | 35mm standard rail |
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XLSCB
| Power-Frequency Short-Circuit Breaking Time | ≤40ms |
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| Power-Frequency Load-Current Breaking Time | ≤50ms |
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| Mechanical Life | 4000 operations |
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| Electrical Life | 4000 operations |
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| Operating Temperature | -25 to +60°C |
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| Poles | 2P, 3P, 4P |
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| Dimensions | 85 × 36 × 73.5mm for 2P; 85 × 72 × 73.5mm for 3P/4P |
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XLSCB2
| Mechanical Life | 10000 operations |
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| Electrical Life | 4000 operations |
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| Operating Temperature | -5 to +40°C |
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| Poles | 1P, 2P, 3P, 4P |
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| Dimensions | ≤80kA: 90 × 18 × 74mm to 90 × 72 × 74mm by pole count; ≥100kA: 90 × 36 × 74mm to 90 × 144 × 74mm by pole count |
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