Product Short Description
Product Overview: Step-down isolation transformer for control circuits, relay panels, PLC auxiliary power, and industrial machinery control voltage.
Technical Specifications: Power rating 0.275 kVA, equal to 275 VA. Primary voltage 220 to 480 VAC wide-range taps in published listings. Secondary voltage 110 to 120 VAC typical control output. Frequency 50/60 Hz. Listed as discontinued surplus with replacement-market availability. Weight approximately 11.18 lb in one distributor listing.
Description
Material And Structure: Laminated silicon-steel core. Copper or aluminum windings with insulation system suitable for control-panel duty. Terminal box or panel terminals. Steel mounting frame or chassis brackets depending on variant.
Working Principle: Alternating primary voltage induces a magnetic field in the core. The secondary winding delivers a lower, isolated voltage according to the turns ratio. Taps adjust the primary side for different supply voltages.
Installation Requirements: Mount in control panel with adequate ventilation and access to primary/secondary terminals. Select primary tap for the available line voltage within 220 to 480 VAC. Connect secondary to 110 to 120 VAC control loads only. Use properly sized conductors and torque terminals to manufacturer values.
Usage Precautions: Do not exceed 275 VA continuous load. Verify primary tap before energizing to avoid overvoltage or saturation. Protect secondary with appropriate fusing or circuit breaker. Inspect insulation and connections periodically. Replace if overheating, unusual noise, or insulation damage occurs.
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