Description
Hammond Manufacturing PT75QR 75VA Control Transformer 240/480V 12/24V AC
The Hammond Manufacturing PT75QR is a 75 VA single-phase control transformer designed for industrial machine tool and control panel applications. It accepts either a 240V AC or 480V AC primary input and delivers either 12V AC or 24V AC on the secondary — all selectable via the clearly labeled terminal connections on the unit. Rated for 50/60 Hz operation with a 55°C temperature rise.
Specifications & What's Included
- Manufacturer: Hammond Manufacturing (Guelph, Ontario / Baraboo, WI)
- Catalog Number / Model: PT75QR
- Power Rating: 75 VA
- Primary Voltage: 240V AC or 480V AC (configurable via H1–H4 terminal connections)
- Secondary Voltage: 12V AC or 24V AC (configurable via X1–X4 terminal connections)
- Frequency: 50/60 Hz
- Phase: Single Phase
- Temperature Rise: 55°C
- Primary Terminals: H1, H2, H3, H4
- Secondary Terminals: X1, X2, X3, X4
- Terminal blocks fitted with clear protective covers
- Panel-mount frame with integral mounting feet/brackets
- Wiring diagram printed on nameplate label for both 240V and 480V configurations
- UL recognized (UL label visible on rear)
- Includes: transformer unit only — no cables or additional hardware
Applications
Control transformers like the PT75QR are standard components in industrial machine tool control panels, motor starter circuits, and programmable logic controller (PLC) enclosures. They step down a higher line voltage — typically 240V or 480V three-phase industrial power — to a safe, low-voltage control circuit supply of 12V or 24V AC, which is used to operate relays, contactors, pilot lights, solenoids, and other control devices. Hammond's PT series transformers have been widely used in North American industrial equipment since the mid-20th century and remain a common replacement part in legacy and current-production control panels. The dual primary voltage configuration (240/480V) makes this unit especially versatile, allowing it to be used in facilities wired to either common North American industrial voltage standard without changing the unit itself.
This Hammond Manufacturing PT75QR 75VA Control Transformer has been inspected and appears to be in good used condition. It was pulled from a working industrial environment where it was previously in service. The transformer body and terminal blocks are intact, with clear protective covers present on both the primary and secondary sides. Minor surface wear consistent with prior use is visible on the housing. Please review our photos for a full look at the current condition and contact us with any questions.
Warranty Information
Additional Information
Brand: |
Hammond Manufacturing |
Model: |
PT75QR |
MPN: |
PT75QR |
SKU: |
46223 |
Type: |
Control Transformer |
Power Rating (VA): |
75 VA |
Primary Voltage: |
240V AC or 480V AC (configurable) |
Secondary Voltage: |
12V AC or 24V AC (configurable) |
Frequency: |
50/60 Hz |
Phase: |
Single Phase |
Temperature Rise: |
55°C Rise |
Primary Terminals: |
H1, H2, H3, H4 |
Secondary Terminals: |
X1, X2, X3, X4 |
Mounting: |
Panel / DIN-rail compatible mounting feet |
Form Factor: |
Open Frame / Panel Mount |
Country/Region of Manufacture: |
Canada |
Seller Notes: |
Transformer only — no cables or additional hardware included. |
Condition Notes: |
This Hammond PT75QR 75VA Control Transformer has been inspected and is in good used condition. Pulled from a working environment. Terminal blocks and protective covers are intact. Minor surface wear present. Contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
