AllansonIgnition Transformers

Allanson 421-104E Ferromagnetic Ignition Transformer for Aero, Metal Master

SKU 3G-OTH-03288

Also listed as: 421104E · 421 104E

Brand

Allanson

Item

421-104E Ferromagnetic Ignition Transformer for Aero, Metal Master

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

Large Can Series 

Grounding

Mid Point Ground 

Application

OIL

Burner Type

AERO, METAL MASTER, SUNRAY 

Hv Terminal

Buss Bar Clips 

Junction Box

INTERNAL 

Input Voltage

120V 

Input Frequency

60Hz 

Secondary Voltage

10000V 

Burner Manufacturer

AERO, METAL MASTER, SUNRAY 

Datasheet Content

[{"filename":"FerromagneticDP_SpecSheet_21-4141121.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                                99 Adams Blvd., Farmingdale, New York 11735    #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

The Allanson 3G-OTH-03288 is a ferromagnetic ignition transformer for oil burners, featuring a double-pole design in a Large Can Series with mid-point grounding. It operates on 120V/60Hz input, delivering 10000V secondary at 23mA via buss bar clips. This unit includes an internal junction box and is compatible with AERO, METAL MASTER, and SUNRAY burners.

Frequently Asked Questions

What is the Allanson 3G-OTH-03288 ignition transformer used for?

The Allanson 3G-OTH-03288 is a ferromagnetic ignition transformer designed for constant-duty oil-fired burners. It provides a reliable 10,000 V secondary ignition source for commercial, residential, and industrial oil applications, specifically for Aero, Metal Master, and Sunray burner models.

What are the specifications of the Allanson 3G-OTH-03288?

The Allanson 3G-OTH-03288 is a double-pole, mid-point ground transformer with a 120 V, 60 Hz input, 10,000 V secondary output, and 23 mA secondary short-circuit current. It has a large can size, internal junction box, and buss bar clip HV terminals. Operating temperature range is -30 to +40 °C.

Where to buy the Allanson 3G-OTH-03288 in Singapore?

3G Electric supplies the Allanson 3G-OTH-03288 ferromagnetic ignition transformer to customers in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this Allanson model.

How to install the Allanson 3G-OTH-03288 ignition transformer?

Install the Allanson 3G-OTH-03288 by mounting it securely in the burner control circuit. Ensure the 120 V primary supply is disconnected before wiring. Connect the buss bar clips to the spark electrodes and verify the loading air gap is between 1/8 and 3/16 inches for proper ignition.

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 →