Hubbell TB250N014 Control Transformer 250VA 240/480-120/240

Product Description

The HUBBELL TB250N014 is a 250 VA control transformer designed for step-down voltage conversion in industrial and commercial electrical systems. It accepts a dual primary voltage of 240 or 480 volts and delivers a dual secondary voltage of 120 or 240 volts, making it a versatile fit across a range of control circuit applications. Licensed electricians and HVAC controls technicians are the primary installers. This unit replaces the earlier Hubbell model TB250B014, providing a direct drop-in upgrade path for legacy installations without rewiring or panel modifications.

This transformer is suited for commercial and light industrial control panel applications where low-voltage control circuits must be isolated and stepped down from higher distribution voltages. Typical install scenarios include motor control centers, HVAC unit controllers, and building automation panel feeds where a reliable 120-volt or 240-volt control supply is needed from a 240-volt or 480-volt distribution source. It is also applicable in retrofit projects replacing the older TB250B014 unit.

Key Features

• 250 VA rated capacity suitable for control circuit loads in commercial panels
• Dual primary voltage: 240 volts or 480 volts
• Dual secondary voltage: 120 volts or 240 volts
• Direct replacement for legacy Hubbell TB250B014 units
• Designed for isolated control circuit power supply in industrial and HVAC applications

Compatibility

This unit is a direct replacement for the Hubbell TB250B014. It is designed as an OEM-style replacement transformer for commercial and industrial control panel applications requiring a 240/480-volt primary to 120/240-volt secondary step-down configuration.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the panel or control circuit before removing the existing transformer or making any wiring connections. Verify primary tap selection matches the available supply voltage before energizing. Confirm the VA load of connected control devices does not exceed the 250 VA rating of this transformer.

Technical Specifications

• Capacity: 250 VA
• Primary Voltage: 240/480 volts
• Secondary Voltage: 120/240 volts

Standard Information

• Brand: HUBBELL
• Manufacturer Part Number: TB250N014