Allanson Transformers 542A Transformer

The Allanson 542A is a high-performance constant duty gas ignition transformer engineered for field-tested reliability in commercial and industrial combustion systems. Designed with a 120V AC primary supply and a potent 10,000V secondary output, this 265VA rated component ensures consistent arc stabilization for demanding burner sequences. As a professional-grade HVAC ignition transformer, the 542A serves as the direct replacement for Allanson 542ASF and Allanson 98171 models. Its robust internal insulation system is specifically formulated to withstand the thermal stressors common in high-cycle gas-fired applications. Contractors and technicians rely on this step-up transformer for its standardized mounting footprint and superior electromagnetic interference suppression, making it a critical gas burner part for maintaining system uptime. This unit provides the necessary electrical discharge to ensure precise ignition across various atmospheric and power burner configurations without dropping voltage under heavy load.

• Direct OEM Interchange: Drop-in compatibility for 542ASF and 98171 models streamlines field installation.
• Constant Duty Design: Built to handle continuous ignition cycles without thermal rollout or performance degradation.
• High-Voltage Precision: Delivers a consistent 10kV arc to overcome high static pressure or rich air-fuel mixtures.
• Industrial Build Quality: Heavy-duty housing ensures effective grounding and protection against localized vibration.

Common Questions

Is the Allanson 542A compatible with 542ASF systems?
Yes, the 542A is the specified replacement for the 542ASF and 98171, sharing identical electrical specs and mounting configurations.

What is the primary difference between intermittent and constant duty transformers?
The 542A is a constant duty unit, meaning it can remain energized throughout the burner's run cycle, whereas intermittent units are only rated for short ignition periods.

Can this transformer be used on oil burners?
This specific model is optimized as a gas ignition transformer; always verify the secondary voltage requirements and mounting plates against your specific burner’s service manual.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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