Square D 150SV43A Buck Boost Transformer 0.15 Kva Nema 3R

Product Description

The SQUARE D 150SV43A is a single-phase buck boost transformer rated at 0.15 kVA, designed to make small adjustments to line voltage in residential and light commercial electrical systems. It accepts a 120 x 240 volt input and provides a 12 or 24 volt output at 60 Hz, allowing electricians to raise or lower supply voltage to correct for line drop or overvoltage conditions. The unit carries a NEMA 3R enclosure rating, making it suitable for both indoor and outdoor installations where protection from rain and sleet is required. RoHS compliance confirms the unit meets restrictions on hazardous substances. Licensed electricians are the primary installers of this transformer.

The 150SV43A is used in applications where a modest voltage correction is needed without replacing the primary distribution transformer. Typical scenarios include boosting voltage at the end of long feeder runs, bucking excess voltage at sensitive loads, and supplementing voltage for motor loads, lighting circuits, and HVAC control circuits. Its compact footprint and NEMA 3R-rated enclosure make it practical for panel rooms, utility areas, and outdoor disconnect locations in both residential and small commercial settings.

Key Features

• 0.15 kVA power rating for small-scale voltage correction tasks
• 120 x 240 volt input with 12/24 volt output for flexible buck or boost wiring configurations
• Single-phase design at 60 Hz for standard North American power systems
• NEMA 3R enclosure rating suitable for indoor and outdoor environments
• RoHS compliant construction

Compatibility

Designed as an OEM-style replacement buck boost transformer for single-phase residential and light commercial electrical distribution applications where NEMA 3R environmental protection is required.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the circuit before making any wiring connections to the transformer. Buck boost transformers must be wired correctly for the intended buck or boost configuration — consult the wiring diagram on the unit before connecting leads. Secure the enclosure to a stable mounting surface appropriate for its rated environment.