Firstco E133 Transformer 120/24V 40VA Step-Down for MBX Series

The Firstco E133 is a 40VA step-down transformer designed specifically for First Company MBX Series HVAC equipment. This essential control component converts standard 120-volt primary power to 24-volt secondary power, providing the low-voltage electricity needed to operate thermostats, relays, and control circuits in heating and cooling systems.

Key Specifications:

• Primary Voltage: 120V AC
• Secondary Voltage: 24V AC
• Power Rating: 40VA
• Designed for MBX Series equipment
• Compatible with 12-30DFCX Series vertical wall fan coils
• Compatible with 18-30DFCH Series horizontal ceiling heat pump fan coils
• OEM First Company replacement part

This transformer is a direct OEM replacement component that ensures proper voltage supply for reliable operation of your First Company HVAC system's control circuits. The 40VA capacity provides adequate power for standard residential and light commercial applications.