Description
The Allanson 421-340 is an OEM-grade ferromagnetic ignition transformer built to deliver reliable high-voltage spark energy for Armstrong/ESSO oil burner systems and other HVAC combustion applications. It accepts a 120 VAC primary input and steps up to 10,000 VAC secondary output at ~23 mA (~250 VA), providing consistent ignition performance under constant duty. Designed with high-temperature internal wiring and a midpoint-grounded double-pole core, this transformer runs cool and quiet while meeting American and European noise emission (EMI/RFI) standards for compliant operation. It’s engineered to OEM specifications for long service life and safe, dependable ignition in residential, commercial, and industrial burner systems.
Key Features
- 120 VAC primary input — standard line voltage compatible with most ignition systems
- 10,000 VAC secondary output with ~23 mA current for robust spark energy
- ~250 VA constant-duty rating suited to typical burner ignition loads
- Double-pole ferromagnetic construction for continuous, stable operation
- Midpoint-grounded core enhances electrical safety and voltage stability
- High-temperature internal wiring delivers long service life under heat cycling
- Meets American & European EMI/RFI noise emission standards for reduced interference
