2741-658 ALLANSON IGNITION TRANSFORMER FOR BECKETT AFII 🔥
📘 Product Overview
The Allanson 2741-658 is a double-pole ignition transformer engineered specifically for Beckett AFII oil burners.
It delivers a powerful and consistent 10,000V spark for reliable burner ignition and smooth operation in oil heating systems.
This model is a direct replacement for Webster 3-32AB-BAF and designed to meet both American and European noise emission standards, ensuring quiet and interference-free performance. Built with high-temperature wiring and ferromagnetic core technology, it provides dependable ignition power under demanding operating conditions.
⚠️ Note: Will not fit Beckett A, AF, or AFG burners — for AFII models only.
✅ Key Features
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✅ Designed exclusively for Beckett AFII oil burners
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✅ Provides strong 10,000V ignition output for reliable starts
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✅ Runs cooler, quieter, and safer than conventional transformers
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✅ Meets EMI and RFI emission standards (American & European)
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✅ High-temperature wiring for enhanced heat resistance
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✅ Durable single porcelain design for improved longevity
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✅ Mid-point grounded secondary for safety and stable operation
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✅ Direct replacement for Webster 3-32AB-BAF
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✅ Engineered to burner manufacturer specifications
⚙️ Technical Specifications
| Specification | Details |
|---|
| Model Number |
2741-658 |
| Manufacturer |
Allanson |
| Application |
Oil Burners |
| Compatible Burner |
Beckett AFII |
| Input Voltage |
120V AC |
| Frequency |
60 Hz |
| Secondary Voltage |
10,000V |
| Output Current |
23 mA |
| Poles |
Double |
| VA Rating |
250 VA |
| Grounding |
Mid-Point Ground |
| High Voltage Terminal |
1/4" Push-On Cable Connections |
| Operating Temperature Range |
High Temp Rated |
| Mount Type |
Base Plate (No Wiring Compartment) |
| Replacement For |
Webster 3-32AB-BAF |
| Country of Origin |
USA / Canada |
🧰 Tech Section
The Allanson 2741-658 Transformer is a ferromagnetic ignition unit that uses an iron-core magnetic circuit to generate high-voltage pulses for burner ignition.
This design provides:
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Stable spark voltage for consistent ignition.
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Reduced electrical noise interference (meets EMI/RFI standards).
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Cooler operation, preventing premature insulation breakdown.
Its mid-point grounding offers safer electrical balance and minimizes short-to-ground failures often seen in older designs.
⚠️ Common Symptoms of a Failing Transformer
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Burner fails to ignite or intermittent ignition
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Weak or no visible spark
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Frequent burner lockouts
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Audible humming but no ignition
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Blackened or carbon-tracked porcelain insulator
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Excessive noise or overheating
❓ FAQ
Q: Can this transformer fit a Beckett AFG?
A: ❌ No — it’s only designed for Beckett AFII models.
Q: What’s the voltage output?
A: 10,000V secondary voltage with 23 mA output current.
Q: Does this transformer include mounting hardware?
A: It mounts via base plate; existing screws can typically be reused.
Q: What’s the main benefit over older transformer designs?
A: The 2741-658 runs cooler, quieter, and provides superior spark consistency while reducing EMI noise.
🛒 Shopping Tips
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✅ Confirm your burner model — fits Beckett AFII only.
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✅ Replace both the transformer and electrodes if ignition issues persist.
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✅ Keep spare transformers for critical or multi-burner systems.
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✅ Use OEM-quality parts to ensure reliable ignition and safety.
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✅ Periodically inspect connections for corrosion or insulation damage
