Allen-Bradley Bt400-575 Industrial Control Transformer

Description:

The BT400-575 control transformer is used in industrial electrical control systems to step down higher industrial voltages (400–575V AC) to low-voltage control circuits for safe operation of relays, contactors, solenoids, and PLC inputs. It is commonly installed in motor control panels, OEM machinery, and industrial automation systems where isolation and stable control voltage (typically 24V or 42V secondary) are required for reliable control circuit operation.

Applications:

The BT400-575 control transformer is commonly used in motor control centers, industrial control panels, HVAC systems, conveyor controls, and OEM machinery where 575V or 480V class power must be stepped down for control circuits. It is typically installed in manufacturing and processing environments to power control relays, pushbuttons, safety circuits, and low-voltage automation components.

Technical Specifications:

• Brand: OEM 
• Manufacturer Part Number (MPN): BT400-575
• Product Type: Industrial Control Transformer
• Primary Voltage: 400–575 VAC
• Secondary Voltage: 24 VAC and/or 42 VAC (dual secondary configuration)
• VA Rating: ~100–150 VA (model dependent, commonly 100–109 VA class)
• Frequency: 50/60 Hz
• Insulation Class: Industrial control transformer rating (typically Class A or B)
• Winding Type: Copper wound, laminated core
• Mounting Type: Panel / DIN rail or chassis mount
• Function: Steps down high voltage to control circuit voltage with isolation
• Protection: Suitable for fused primary and/or secondary protection
• Application: Motor control circuits, PLC power, relays, solenoids, OEM panels
• Operating Environment: Industrial electrical control cabinets

Common Replacements:

• Hammond 171 series control transformers (575V primary, 24/48V secondary class)
• Schneider Electric 9070 series control transformers (industrial OEM replacement class)
• Eaton / Cutler-Hammer control transformers (Type MT / MTE series equivalents)