AllansonIgnition Transformers

Allanson 2721-620 Ferromagnetic Ignition Transformer for Wayne

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-03261

Also listed as: 2721620 · 2721 620

Brand

Allanson

Item

2721-620 Ferromagnetic Ignition Transformer for Wayne

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

Technical Specifications

Allanson

Poles

Double 

Current

23mA 

Can Size

Small Can Series 

Grounding

Mid Point Ground 

Application

OIL

Burner Type

E

Hv Terminal

Large Spring Contact 

Input Voltage

120V 

Hinge Location

Side Hinge 

Input Frequency

60Hz 

Secondary Voltage

10000V 

Burner Manufacturer

WAYNE 

Datasheet Content

[{"filename":"FerromagneticDP_SpecSheet_21-4141121_04-Sep-2025.pdf","text":"FERROMAGNETIC TRANSFORMERS\n                                                                       2721 / 2744 / 2730 / 2714 / 421 / 444 / 911 / 912\n                                                                                         SPECIFICATION GUIDE\n\n\n                    DOUBLE POLE, MID POINT GROUND MODELS\n\n Allanson’s ferromagnetic transformers are designed for constant duty and provide the most reliable ignition\n source for commercial and/or industrial oil applications.\n\n\n  Absolute Maximum Ratings\n  Model #                                           2721, 421*        2744, 444*         911*       2730, 912*         2714\n  Rated Operating Input Voltage (V)                     120               240             240           120             120\n  Operating Input Voltage Range (V)                   108-132           216-252        216-252        108-132        108-132\n  Input Supply Frequency (Hz)                            60                60             50             50             60\n  Primary Voltage - Amperes (VA)                        250               250             250           250             275\n  Secondary Voltage (RMS)                              10,000            10,000         10,000         10,000         12,000\n  Secondary Short Circuit Current (mA)                   23                23              23            23              20\n  Storage Temperature (°C)                          -40 to +80        -40 to +80      -40 to +80    -40 to +80      -40 to +80\n  Operating Temperature (°C)                        -30 to +40        -30 to +40      -30 to +40    -30 to +40      -30 to +40\n  Operating Relative Humidity (%)                        90                90              90            90              90\n  Loading Air Gap (inches)                           1/8 - 3/16        1/8 - 3/16     1/8 - 3/16     1/8 - 3/16     1/8 - 3/16\n\n * Service replacement transformers are available in select models.\n\n\n\n\n83 Commerce Valley Drive E., Markham, ON L3T 7T3                                    181 Cooper Ave., Suite 112, Tonawanda, NY 14150   #21-414\n      T: 1.800.661.7251 ● F: 1.416.752.6718                                               T: 1.631.293.3880 ● F: 1.631.293.3470        1121\n\n\n                  For more information, please visit us at allanson.com or e-mail us at cservice@allanson.com"}]

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Allanson Products

3G Electric (S) Pte. Ltd. — Singapore

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 2721-620 ignition transformer used for?

The Allanson 2721-620 is a ferromagnetic ignition transformer designed for constant duty in commercial, residential, and industrial oil applications. It provides a reliable ignition source for Wayne burners, delivering a secondary voltage of 10,000V at 23mA to ensure consistent spark generation in oil-fired heating systems.

What are the specifications of the Allanson 2721-620?

The Allanson 2721-620 is a double-pole, mid-point ground transformer with an input voltage of 120V at 60Hz and a secondary voltage of 10,000V RMS. It has a secondary short circuit current of 23mA, a loading air gap of 1/8 to 3/16 inches, and operates in temperatures from -30°C to +40°C.

Where to buy the Allanson 2721-620 in Singapore?

You can source the Allanson 2721-620 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 Wayne-compatible transformer.

How to install the Allanson 2721-620 ignition transformer?

Install the Allanson 2721-620 by first disconnecting power and verifying the input voltage matches 120V at 60Hz. Mount the transformer securely using the side hinge, connect the large spring contact HV terminal to the burner electrode, and ensure the mid-point ground is properly bonded. Always follow the burner manufacturer's wiring diagram.

Used in

Common applications for Allanson

Oil burner retrofit maintenance — Allanson CAT 1092 TYPE F transformer replacement in existing Beckett control circuits

Industrial heating-system commissioning — Control transformer installation in multi-stage flame-safeguard burner startup sequences

Plant emergency maintenance — Same-day T92 transformer procurement to restore failed ignition control voltage supply

Burner control-cabinet assembly — Allanson transformer integration in custom control-circuit designs for process-heating applications

Field technician spare-parts kit — Stocking CAT 1092 and T92 variants for mobile maintenance coverage of regional burner installations

Allanson 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.

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