Square D 9070TF100D3 Type TF Industrial Control Transformer 100VA 208V to 120V

The Square D 9070TF100D3 is a Class 9070 Type TF single-phase industrial control transformer rated at 100 VA, stepping down a 208V AC primary to a 120V AC secondary. Designed for industrial panel mounting, it features an open enclosure with screw clamp terminal connections and operates at 50/60 Hz.

A defining feature of the Type TF design is the inclusion of factory-installed overcurrent protection fuse blocks — two primary fuse blocks and one secondary fuse block — pre-wired and mounted on top of the transformer. This configuration meets the majority of overcurrent protection needs for panel builders and machinery OEMs while maintaining the same compact footprint as the standard Type T unit. Rejection-style clips are also included to increase the AIC ratings of the fuses.

Key Features:

• Power Rating: 100 VA
• Primary Voltage: 208V AC
• Secondary Voltage: 120V AC
• Phase: Single Phase
• Frequency: 50/60 Hz
• Temperature Rise: 55°C
• Insulation Rating: 105°C
• Connection Type: Screw Clamp Terminals
• Mounting: Chassis / Panel Mount
• Enclosure: Open
• Winding Material: Copper
• Includes: 2 primary fuse blocks + 1 secondary fuse block (pre-wired)
• Dimensions: 4.18 in H × 3.38 in W × 3.34 in D
• Country of Origin: Mexico

Certifications: UL Listed (File E61239), CSA Certified (File LR37055), CE Marked, NOM Certified, REACH, RoHS compliant.

The 9070TF100D3 features low-impedance windings for excellent voltage regulation and is engineered to handle the high inrush currents common with contactors, starters, solenoids, and relays — making it a reliable choice for demanding industrial control power applications.