Hammond CT5PC 1000:1 PC Board Mount Small Current Transformer
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Create Free Business AccountKey Features
- 1000:1 current ratio: 5 A primary (20 A max) to 5 mA secondary
- PC board mount on .025 sq. pins
- High accuracy windings rated 1%
- Customer-supplied primary: 1 turn through the open top of the bobbin
- Series rated for 40 - 1,000 Hz operation
- H 1.40 x D 1.08 x W 1.03 in (36 x 27 x 26 mm)
- RoHS and REACH compliant
The CT5PC is the PC board mount version of the CT5 series small-current transformer, with a 1000:1 ratio. It is aimed at electronics designers and OEM engineers who need to sense AC current directly on a printed circuit board, as well as panel builders pairing it with a standard AC ammeter with a 5 mA movement.
It is designed for a 5 A primary (maximum 20 A) and produces a 5 mA secondary current. The windings are high accuracy, rated 1%. The primary is supplied by the customer: one turn of the conductor passes through the open top of the transformer bobbin. The series is specified for 40 - 1,000 Hz operation, and the part drawing marks the primary as 0-5 A, 20 A max., 50/60 Hz, with a 0-5 mA secondary.
The unit mounts on .025 sq. pins for PC board installation and has no chassis mounting hole. Overall dimensions are H 1.40 in (36 mm), D 1.08 in (27 mm) and W 1.03 in (26 mm), giving it a narrower footprint than the chassis mount CT5CF.
Shipping weight is 0.17 lbs (0.08 kg), and the series table lists 1.8 oz. The CT5PC is RoHS and REACH compliant.
Ideal For
- On-board AC current sensing in PCB designs
- OEM equipment current monitoring up to 5 A (20 A max)
- Driving AC ammeters with 5 mA movements
Mounting
| Pins | .025 SQ. PINS |
| Mounting | P.C. board pin mount |
| Mounting Hole | n/a |
Overview
| Style | PC Board Mount |
| Series | CT5 Series |
| Product Type | Current transformer, small current, PC board mount |
| Drawing Title | PC Mount Current TX |
| Short Description | CT |
Dimensions
| Depth (D) | 1.08 in (27 mm) |
| Width (W) | 1.03 in (26 mm) |
| Height (H) | 1.40 in (36 mm) |
Electrical
| Primary Current | 5 A (maximum 20 A) |
| Winding Accuracy | 1% (high accuracy windings) |
| Secondary Current | 5 mA (for standard AC ammeters with 5 mA movements) |
| Primary Rating (Drawing) | 0-5 AMP., 20 AMP. MAX., 50/60 Hz |
| Current Ratio (Pri./Sec.) | 1000:1 |
| Secondary Rating (Drawing) | 0-5 mA, 1% ACC. |
| Operating Frequency (Series) | 40 - 1,000 Hz |
Identifiers
| UPC | 623980953090 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 0.17 lbs (0.08 kg) |
| Ship Wt. (Series Table) | 1.8 oz |
Construction & Finish
| Primary Winding | Customer supplied (1 turn through open top of transformer bobbin) |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
How does the CT5PC mount?▾
It is a PC board mount unit using .025 sq. pins; it has no chassis mounting hole.
What is its current ratio?▾
1000:1, designed for a 5 A primary (maximum 20 A) with a 5 mA secondary.
Do I need to wind the primary?▾
Yes. The customer supplies the primary winding: 1 turn through the open top of the transformer bobbin.
What accuracy does the CT5PC offer?▾
High accuracy windings rated 1%.
How does it compare with the CT5CF?▾
Both are 1000:1 CT5 series units. The CT5PC is PC board mount (H 1.40 x D 1.08 x W 1.03 in), while the CT5CF is chassis mount (H 1.25 x D 1.10 x W 2.06 in).
