Allanson 421-331 Ferromagnetic Ignition Transformer for Lennox
Allanson’s Double Pole ferromagnetic transformers are designed for constant duty and provide the most reliable ignition source for commercial, residential and industrial oil applications.
SKU 3G-OTH-03290
Also listed as: 421331 · 421 331
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
Allanson’s Double Pole ferromagnetic transformers are designed for constant duty and provide the most reliable ignition source for commercial, residential and industrial oil applications.
Frequently Asked Questions
What is the Allanson 421-331 ignition transformer used for?
The Allanson 421-331 is a ferromagnetic ignition transformer designed for constant duty in commercial, residential, and industrial oil burner applications. It is specifically configured for Lennox burners, providing a reliable ignition source with a 10,000 V secondary voltage and 23 mA secondary short circuit current.
What are the specifications of the Allanson 421-331?
The Allanson 421-331 is a double pole, mid point ground transformer with an input voltage of 120 V at 60 Hz. It delivers a secondary voltage of 10,000 V and a secondary short circuit current of 23 mA. The operating temperature range is -30 to +40 °C, and it features a zinc plated button HV terminal.
Where to buy the Allanson 421-331 in Singapore?
You can source the Allanson 421-331 ignition transformer through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this Lennox-compatible replacement transformer.
How to install the Allanson 421-331 ignition transformer?
To install the Allanson 421-331, first ensure the burner is disconnected from power. Mount the transformer using the end hinge location, connect the 120 V input supply, and attach the zinc plated button HV terminal to the ignition electrode. Maintain a loading air gap of 1/8 to 3/16 inches for proper operation.
Used in
Common applications for AllansonAllanson Products
3G Electric supplies Allanson ignition transformers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
