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Allanson 421-655-SF-G Ferromagnetic Service Replacement Transformer - Service Replacement Transformers
AllansonService Replacement Transformers

Allanson 421-655-SF-G Ferromagnetic Service Replacement Transformer

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-03359

Also listed as: 421655 SFG · 421655-SFG

Brand
Allanson
Item
421-655-SF-G Ferromagnetic Service Replacement Transformer
Part Number
421655SFG
Category
Service Replacement Transformers
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Allanson
Manufacturer Part Number
421655SFG
Poles
Double
Current
23mA
Grounding
Mid Point Ground
Application
OIL
Hv Terminal
Rajah Connector
Input Voltage
120V
Input Frequency
60Hz
Secondary Voltage
10000V

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 421-655-SF-G transformer used for?

The Allanson 421-655-SF-G is a ferromagnetic service replacement transformer designed for constant duty ignition in commercial, residential, and industrial oil applications. It provides a reliable ignition source for oil burners, with a double-pole, mid-point ground configuration and a secondary voltage of 10000V.

What are the specifications of the Allanson 421-655-SF-G?

The Allanson 421-655-SF-G operates at 120V input, 60Hz, with a secondary voltage of 10000V and 23mA short circuit current. It features double-pole, mid-point grounding, a Rajah connector on the HV terminal, and is rated for constant duty in oil applications.

Where to buy the Allanson 421-655-SF-G in Singapore?

3G Electric supplies the Allanson 421-655-SF-G ferromagnetic transformer to Singapore. We source and deliver this OEM component, handling logistics and customs clearance for your facility. Contact us for availability and lead time on this service replacement transformer.

How to install the Allanson 421-655-SF-G transformer?

Install the Allanson 421-655-SF-G by ensuring the input voltage matches 120V at 60Hz. Securely connect the Rajah connector to the HV terminal and verify mid-point grounding. Follow standard oil burner transformer practices, maintaining a loading air gap of 1/8 to 3/16 inches for optimal performance.

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 service replacement transformers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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