Ignition Transformers ET 401A

Honeywell Ignition Transformer ET 401A (230V AC)

The Honeywell ET 401A is an ignition transformer that steps up a 230V mains supply to a 14kV high-voltage secondary output rated at 35mA rms, for firing the spark electrode on gas and oil burners. Rated for an intermittent duty cycle of 33% ED (energised duration) within a 3-minute cycle, with IP40 protection, it delivers reliable high-voltage ignition for burner and boiler applications. It terminates in flying leads (Blue-N, Brown-L, Green&Yellow-E) for direct wiring into the burner control circuit. Manufactured by Honeywell.