AllansonIgnition Transformers

Allanson 2721-605 Ferromagnetic Ignition Transformer for Beckett

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-03259

Also listed as: 2721605 · 2721 605

Brand

Allanson

Item

2721-605 Ferromagnetic Ignition Transformer for Beckett

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

S

Hv Terminal

Large Spring Contact 

Input Voltage

120V 

Hinge Location

End Hinge 

Input Frequency

60Hz 

Secondary Voltage

10000V 

Burner Manufacturer

BECKETT 

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"}]

Technical Documents

No technical documents available for this product.

Request documentation →

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

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 2721-605 ignition transformer used for?

The Allanson 2721-605 is a double-pole ferromagnetic ignition transformer designed for constant-duty oil burners, primarily Beckett models. It provides a reliable 10,000 V secondary voltage at 23 mA for commercial, residential, and industrial oil heating applications.

What are the specifications of the Allanson 2721-605?

The Allanson 2721-605 operates at 120 V input, 60 Hz, with a secondary voltage of 10,000 V RMS and 23 mA short-circuit current. It features mid-point grounding, a small can size, large spring-contact HV terminals, and an end hinge. Storage temperature range is -40 to +80 °C.

Where to buy the Allanson 2721-605 in Singapore?

3G Electric supplies the Allanson 2721-605 ignition transformer to Singapore. We source and deliver this component, handling logistics, customs clearance, and last-mile delivery to your facility. Contact us for pricing and lead time on this Beckett-compatible transformer.

How to install the Allanson 2721-605 on a Beckett burner?

Ensure the burner is disconnected from power. Mount the transformer using the end hinge, connect the 120 V input leads, and attach the large spring-contact HV terminals to the ignition electrodes. Maintain a loading air gap of 1/8 to 3/16 inches for proper spark. Refer to the burner manual for torque specs.

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.

Browse all Allanson products →Contact our engineers →