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Ritz KSO 74 Indoor Slip-over Current Transformer Specifications:
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Product Type: Current Transformer (Slip-over, Window Type)
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Manufacturer: RITZ Instrument Transformers GmbH
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Model: KSO 74
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Device Application: Measurement and protection in switchgear, switching device combinations, and power distribution systems
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Primary Current (Ipn): 50 A to 1000 A
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Secondary Current (Isn): 1 A or 5 A
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Rated Power: 2.5 VA to 15 VA (e.g., 2.5 VA for 600/5A, 15 VA for 500/5A)
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Accuracy Class: 0.5, 1, 3 (e.g., Class 3 for 500/5A 15 VA)
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Overcurrent Rating Factor (FS): Adjustable, typically FS 5 or FS 10
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Rated Voltage (Um): 0.72 kV (optional 1.2 kV for tropical version)
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Insulation Level: 0.72/3 kV
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Frequency: 50/60 Hz
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Window Opening: 40.2 mm (suitable for busbars or cables)
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Busbar Compatibility: Up to 40 x 12 mm, 35 x 13 mm, or 30 x 18 mm
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Cable Compatibility: Round conductor up to Ø 30 mm
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Housing Material: Polycarbonate, visco-plastic, flame-resistant, self-extinguishing
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Primary Conductor: Without primary conductor (slip-over design); optional KSS 74 with nickel-plated flat copper busbar
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Dimensions:
- Width: 70 mm
- Height: 94 mm
- Depth: 52 mm
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Weight: Approximately 0.5 kg
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IP Degree of Protection: IP50 (housing), IP20 (terminals)
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Ambient Air Temperature for Operation: -5 to 40 °C
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Ambient Air Temperature for Storage: -25 to 70 °C
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Standards Compliance: IEC
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Special Features:
- Shock-resistant polycarbonate housing
- Optional tropical version with enhanced insulation (1.2 kV)
- Secondary terminal box can be sealed
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HS Code: 8504.31.80
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Country of Origin: Germany
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