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Allanson 2721-457 Ferromagnetic Ignition Transformer for Acme Weatherall - Ignition Transformers
AllansonIgnition Transformers

Allanson 2721-457 Ferromagnetic Ignition Transformer for Acme Weatherall

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-03254

Also listed as: 2721457 · 2721 457

Brand
Allanson
Item
2721-457 Ferromagnetic Ignition Transformer for Acme Weatherall
Part Number
2721-457
Category
Ignition Transformers
UNSPSC
39121003 — Instrument transformers
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Technical Specifications

Allanson
Poles
Double
Current
23mA
Can Size
Small Can Series
Grounding
Mid Point Ground
Application
OIL
Burner Type
ACME WEATHERALL
Hv Terminal
Zinc Plated Button
Input Voltage
120V
Hinge Location
Side Hinge
Input Frequency
60Hz
Secondary Voltage
10000V
Burner Manufacturer
ACME WEATHERALL

Technical Documents

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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 2721-457 ferromagnetic ignition transformer used for?

The Allanson 2721-457 is a double-pole ferromagnetic ignition transformer designed for constant-duty ignition in commercial, residential, and industrial oil burners, specifically the Acme Weatherall. It provides a reliable 10,000 V secondary voltage at 23 mA for consistent oil ignition.

What are the specifications of the Allanson 2721-457 ignition transformer?

The Allanson 2721-457 has a 120 V input voltage at 60 Hz, 10,000 V secondary voltage, 23 mA secondary short-circuit current, and 250 VA rating. It features double-pole, mid-point grounding, a side hinge, and zinc-plated button HV terminals. Operating temperature range is -30 °C to +40 °C.

Where to buy the Allanson 2721-457 in Singapore?

You can source the Allanson 2721-457 ferromagnetic 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 Acme Weatherall-compatible transformer.

How to install the Allanson 2721-457 ignition transformer on an Acme Weatherall burner?

Ensure the transformer is mounted securely with the side hinge aligned. Connect the 120 V primary supply to the correct terminals and verify the mid-point ground. Set the air gap to 1/8 to 3/16 inches for proper spark. Always follow the burner manufacturer's wiring diagram and safety procedures.

Used in

Common applications for Allanson
Industrial gas combustion — Allanson 1196-H ferromagnetic ignition transformer for constant-duty spark generation in commercial and industrial gas burners.
Carlin oil burner retrofit — Allanson 2730-630 ignition transformer for Carlin 99, 100, 101, and Card Miser burners, operating at 110V/50Hz.
Gordon Piatt burner service — Allanson 542-GP ignition transformer with 1/4-20 stud terminal for reliable ignition in Gordon Piatt gas burners.
PVI Industries oil heating — Allanson 421-663 double-pole transformer for oil-fired PVI Industries boilers, providing mid-point grounded ignition.
Commercial kitchen ventilation — Allanson DCC2C32700-120-277V LED power supply for dimmable hood lamp lighting in commercial kitchen exhaust systems.
Process heating systems — Allanson 1092-IC ignition transformer for industrial combustion applications requiring 25/20mA output and Rajah connector.
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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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