SCROLL TECH ST-R125 KE-TF5-3PH-220V-60HZ-R407
Scroll Compressor (High capacity ~10 HP class / ~120,000–125,000 BTU/h)
This model belongs to the ScrollTech ST-R125 series, designed for medium-to-large commercial HVAC systems using R407C refrigerant.
Based on the ST-R125 platform technical data, it is in the ~10 HP scroll compressor class, comparable in capacity to Copeland ZR125 series compressors.
Key Specifications (ST-R125 TF5 version)
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Brand: ScrollTech
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Model: ST-R125 KE-TF5
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Compressor type: Hermetic scroll
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Refrigerant: R407C
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Power supply: 3-Phase, 220V, 60Hz (TF5 low-voltage version)
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Capacity: ~120,000–125,000 BTU/h class
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Motor class: ~10 HP
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Oil type: POE oil (R407C compatible)
Verified technical reference (equivalent class)
Industry-equivalent compressor data (same capacity range) shows:
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Nominal capacity: ~125,000 BTU/h
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Displacement: ~29 m³/h class
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Suction line: 1-3/8”
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Discharge line: 7/8”
Copeland equivalent: ZR125KCE-TF5 series (same BTU class, same piping size, same application range)
Typical Applications
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10 ton commercial split AC systems
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Rooftop packaged units
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Small air-cooled chillers
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Large VRF auxiliary fixed-speed circuits
Electrical Notes (TF5 – 220V 3 Phase)
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Requires 3-phase 220–230V supply
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Must use:
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Proper contactor
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Thermal overload protection
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Correct capacitor is NOT used (scroll is 3-phase direct motor)
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Must ensure correct phase rotation (important for scroll compressors)
Key Features
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High efficiency scroll design
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Low noise & vibration
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Internal motor protection
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Stable operation under variable load
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Compatible with R407C (POE oil system)