United Automation PATFC, Phase Angle Triac Firing Circuit, 5 A
- RS Stock No.:
- 489-3503
- Mfr. Part No.:
- PATFC
- Brand:
- United Automation
Bulk discount available
Subtotal (1 unit)*
$58.62
(exc. GST)
$64.48
(inc. GST)
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In Stock
- 23 unit(s) ready to ship from another location
- Plus 50 unit(s) shipping from 26 February 2026
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Units | Per unit |
|---|---|
| 1 - 9 | $58.62 |
| 10 - 49 | $58.57 |
| 50 + | $57.33 |
*price indicative
- RS Stock No.:
- 489-3503
- Mfr. Part No.:
- PATFC
- Brand:
- United Automation
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | United Automation | |
| Rated Average On-State Current Irms | 5A | |
| Product Type | Phase Angle Triac Firing Circuit | |
| Thyristor Type | TRIAC | |
| Minimum Operating Temperature | 0°C | |
| Maximum Operating Temperature | 65°C | |
| Standards/Approvals | BS 7671 | |
| Series | PATFC | |
| Automotive Standard | No | |
| Select all | ||
|---|---|---|
Brand United Automation | ||
Rated Average On-State Current Irms 5A | ||
Product Type Phase Angle Triac Firing Circuit | ||
Thyristor Type TRIAC | ||
Minimum Operating Temperature 0°C | ||
Maximum Operating Temperature 65°C | ||
Standards/Approvals BS 7671 | ||
Series PATFC | ||
Automotive Standard No | ||
- COO (Country of Origin):
- GB

Phase Angle Triac Firing Circuit - United Automation
Thick film hybrid firing circuit
Gives phase control of most loads in the range 1 to 100 amps (depending on choice of triac, heat sink and potentiometer)
The number of complete mains cycles during fixed repeating periods (typically 1 to 10 seconds) is varied, thus altering the duty cycle or on-/off-time ratio. Trigger pulses coincide with the zero-crossing times of the mains supply thus ensuring no RFI is produced when using resistive loads.
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