SCROLL TECH ST-R125 KE-TFD-3PH-460V-60HZ-R407
Scroll Compressor (≈ 10 HP / ~125,000 BTU class, industrial voltage version)
This is the TFD high-voltage variant of the ScrollTech ST-R125 series, designed for commercial HVAC and chiller applications using R407C refrigerant and operating on 3-phase 460V / 60Hz power.
It is in the same performance class as Copeland ZR125KCE-TFD-950 scroll compressors, which are widely used in North American and industrial HVAC systems.
Key Specifications (ST-R125 TFD version)
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Brand: ScrollTech
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Model: ST-R125 KE-TFD
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Compressor type: Hermetic scroll
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Refrigerant: R407C (also compatible with R22/R134a in equivalent designs)
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Power supply: 3-Phase, 460V / 60Hz
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Capacity: ~125,000 BTU/h (≈ 10 HP class)
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Oil type: POE oil
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Application: Commercial AC / rooftop units / small chillers
Electrical / Design Notes
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“TFD” = high-voltage scroll motor configuration (380–420V / 460V class family)
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Built-in internal motor protection
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Requires external contactor + overload relay
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No capacitor (3-phase direct drive)
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Designed for continuous commercial duty
Equivalent Industry Reference
This compressor is closely aligned with:
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Copeland ZR125KCE-TFD-950
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Cooling capacity: ~125,000 BTU (≈ 27 kW range)
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Typical suction/discharge:
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Suction: 1-3/8”
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Discharge: 7/8”
Typical Applications
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10 ton commercial split systems
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Rooftop packaged air conditioners
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Small air-cooled chillers
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Large VRF fixed-speed compressor circuits
Key Features
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High efficiency scroll design
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Low vibration and noise
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Stable performance under heavy load
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POE oil system for R407C
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Industrial-grade 460V operation