
Hammond PT120PC 120V PCB-Mount Potential Transformer, 0-5V Output
Ships from and sold by A5 IT
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Create Free Business AccountKey Features
- 120V, 50/60Hz primary with 0-5V secondary for 5 Volt full scale A.C. voltmeters
- P.C. board pin mount with .025 square pins
- High accuracy windings (1%)
- VA rated for 0.020 VA
- Compact 1.40 in H x 1.08 in D x 1.03 in W footprint
- RoHS and REACH compliant
The PT120PC is a printed-circuit-board mount instrument potential transformer from the PT Series. It is designed to measure the voltage of 120 VAC systems with 5 Volt full scale A.C. voltmeters, taking a 120V, 50/60Hz primary down to a 0-5V secondary, and suits OEM engineers building line-voltage sensing directly onto a circuit board.
Windings are high accuracy (1%), with the drawing marking the secondary 0-5V 1.0% ACC., and the series is VA rated for 0.020 VA. Instead of flying leads, the PT120PC uses .025 square pins for P.C. board pin mounting; the drawing shows the primary on pins 1 and 5 and the secondary on pins 6 and 10.
Overall dimensions are 1.40 in (36 mm) high, 1.08 in (27 mm) deep and 1.03 in (26 mm) wide, and no chassis mounting hole is used (n/a). Ship weight is listed as 2.1 oz on the spec sheet and 0.15 lbs (0.07 kg) as shipping weight; the drawing titles the part a PC mount potential TX.
The PT120PC is listed as RoHS and REACH compliant. A chassis-mount version with the same 120V nominal line voltage is available as the PT120CF.
Ideal For
- On-board 120 VAC line voltage sensing
- Measuring 120 VAC with 5 Volt full scale A.C. voltmeters
- PC board instrumentation designs
Overview
| Series | PT Series - Potential Transformer Instrument |
| Description | Potential Transformer, line voltage 120V, PC board mount, PT series |
| Part Number | PT120PC |
| Drawing Title | PC mount potential TX |
| Short Description | PT |
Dimensions
| Depth (D) | 1.08 in (27 mm) |
| Width (W) | 1.03 in (26 mm) |
| Height (H) | 1.40 in (36 mm) |
| Mounting Hole | n/a |
Electrical
| Primary | 120V, 50/60Hz |
| Accuracy | 1% (high accuracy windings); marked 1.0% ACC. |
| Frequency | 50/60 Hz |
| Secondary | 0-5V |
| VA Rating | 0.020 VA |
| Intended Meter | 5 Volt full scale A.C. voltmeter |
| Nominal Line Voltage | 120 |
Identifiers
| UPC | 623980953076 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 0.15 lbs (0.07 kg) |
| Ship Weight (Spec Sheet) | 2.1 oz |
Construction & Finish
| Pins | .025 SQ. pins |
| Mounting | P.C. board pin mount |
| Primary Pins | 1 and 5 |
| Secondary Pins | 6 and 10 |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What does the PT120PC do?▾
It measures the voltage of 120 VAC systems with 5 Volt full scale A.C. voltmeters, converting a 120V 50/60Hz primary to a 0-5V secondary.
How does the PT120PC mount?▾
It is a P.C. board pin mount part with .025 square pins; no mounting hole is used.
Which pins are primary and secondary?▾
The drawing shows the primary on pins 1 and 5 and the secondary on pins 6 and 10.
What is its accuracy and VA rating?▾
High accuracy windings (1%), VA rated for 0.020 VA.
How big is it?▾
1.40 in (36 mm) high, 1.08 in (27 mm) deep and 1.03 in (26 mm) wide.

