Burner Ignition Electrode Sizing Guide for OEMs: Ceramic, Kanthal & Dimensions
Reliable burner ignition depends on several correctly matched components, including the ignition transformer, electrodes, combustion-air supply and fuel delivery arrangement.
Among these components, burner ignition electrodes play a critical role in creating the spark required for ignition in compatible oil and gas burners.
For burner manufacturers, OEM engineers, maintenance teams and procurement professionals, selecting the correct ignition electrode involves much more than choosing a product with the right overall length.
The ceramic diameter, ceramic insulation length, exposed metal rod length, electrode tip geometry and mounting arrangement all affect component suitability.
This guide explains how to read common straight ignition electrode dimensions, understand the materials used and select appropriate replacements for industrial burner applications.
What Is a Burner Ignition Electrode?
A burner ignition electrode is a component used to conduct high voltage from an ignition transformer to an electrode tip, where a spark can be produced across the intended ignition gap.
The spark helps ignite the fuel-air mixture during the burner's ignition sequence.
An ignition electrode typically includes:
A ceramic insulating body.
A conductive metal rod.
A high-voltage terminal or connection.
An exposed ignition tip.
The design varies according to the burner manufacturer and application.
The electrode is one part of a complete ignition system and must be matched to the ignition transformer, burner head and combustion arrangement.
Why Electrode Dimensions Matter
Incorrect electrode dimensions may create installation problems or affect the position of the spark.
Potential issues include:
Incorrect ceramic diameter: The electrode may not fit its mounting bracket or holder.
Incorrect ceramic length: The insulating section may not provide the required mechanical fit or separation from nearby components.
Incorrect metal rod length: The electrode tip may not reach the intended ignition position.
Incorrect tip shape: The spark gap or ignition geometry may differ from the burner's design.
Incorrect terminal arrangement: The ignition cable may not connect properly.
For these reasons, OEMs and maintenance personnel should verify the complete electrode specification.
Understanding Burner Ignition Electrode Size: 10 × 150 × 100 mm
At Mahalaxmi Sales, straight ignition electrodes use a dimensional naming convention such as:
10 × 150 × 100 mm
This means:
Dimension | Meaning |
10 mm | Ceramic outer diameter |
150 mm | Ceramic insulation length |
100 mm | Exposed metal rod length |
The exposed rod length refers to the portion extending beyond the ceramic body.
It does not necessarily represent the full length of the metal conductor inside the electrode.
The overall assembly length may also depend on the terminal and electrode tip arrangement.
When comparing models, always use the dimensional definitions given on the product specification.
What Is 97% Alumina Ceramic?
The ceramic insulating section separates the high-voltage conductor from surrounding metallic parts.
For the straight-electrode products listed by Mahalaxmi Sales, the specified insulating material is 97% alumina ceramic.
Alumina is widely used in industrial electrical insulation applications because of its electrical insulation characteristics and resistance to elevated temperatures.
The listed straight-electrode specifications state a ceramic temperature resistance of up to 1100°C.
This is a ceramic material specification; it should not be interpreted as a guaranteed continuous operating temperature for the complete assembled electrode.
Actual suitability depends on the burner design, operating conditions and component installation.
Why Use Kanthal A-1 in Ignition Electrodes?
Kanthal A-1 is a ferritic iron-chromium-aluminium (FeCrAl) alloy used in high-temperature industrial applications.
The straight ignition electrodes listed by Mahalaxmi Sales specify a Kanthal A-1 metal rod.
For these products, the nominal rod diameter is 3 mm.
Important material-related considerations include:
Suitability for elevated-temperature environments.
Resistance to oxidation under specified conditions.
Mechanical compatibility with the electrode design.
Correct rod diameter and geometry.
A high-temperature alloy does not automatically make an ignition electrode suitable for every burner.
Electrode design, mounting and operational requirements remain important.
Common Straight Burner Ignition Electrode Sizes
Mahalaxmi Sales lists multiple dimensional variants for industrial burner applications.
Examples include:
Electrode size | Ceramic OD | Ceramic length | Exposed rod length |
10 × 150 × 150 mm | 10 mm | 150 mm | 150 mm |
12 × 150 × 100 mm | 12 mm | 150 mm | 100 mm |
12 × 200 × 150 mm | 12 mm | 200 mm | 150 mm |
14 × 150 × 150 mm | 14 mm | 150 mm | 150 mm |
14 × 200 × 150 mm | 14 mm | 200 mm | 150 mm |
These are examples from the available product catalogue, not a complete list of all possible configurations.
The appropriate size depends on the original burner design.
How to Measure an Existing Burner Ignition Electrode
When identifying an electrode for replacement, begin with the removed component's documented specifications or OEM reference.
If dimensional confirmation is required, the qualified technician should record:
1. Ceramic outer diameter
Measure the outside diameter of the ceramic insulating body.
2. Ceramic length
Measure the insulating section according to the product's dimensional convention.
3. Exposed metal rod length
Measure the rod section extending beyond the ceramic.
4. Metal rod diameter
Confirm the conductor diameter, where relevant.
5. Terminal type
Record the ignition cable terminal configuration.
6. Electrode tip geometry
Check whether the electrode is straight, angled or formed to a particular design.
7. Mounting arrangement
Verify brackets, clips, clearances and positioning requirements.
The existing electrode should be handled only after the burner has been safely isolated according to the manufacturer's instructions.
Straight Ignition Electrodes vs H-Type Electrodes
Different burner applications use different electrode configurations.
Straight Ignition Electrodes
Straight electrodes use a relatively simple rod arrangement and may be supplied in different ceramic and rod lengths.
They can suit applications where the burner manufacturer specifies a straight electrode geometry.
H-Type Ignition Electrodes
H-type designs use a different geometry and may be manufactured in small or large configurations.
Their shape and dimensions depend on the intended burner assembly.
A straight electrode should not be substituted for an H-type electrode, or vice versa, without an approved technical assessment.
Common Burner Ignition Electrode Problems
1. Weak or Inconsistent Ignition Spark
Potential causes include damaged insulation, incorrect electrode positioning, deteriorated electrical connections or problems elsewhere in the ignition system.
The ignition transformer and power supply may also need inspection.
2. Cracked Ceramic Insulator
Damage to the ceramic can affect insulation performance.
Cracked or damaged electrodes should be assessed and replaced according to equipment manufacturer instructions.
3. Incorrect Electrode Gap
The spark gap must match the burner's specified geometry.
An unsuitable gap or incorrect tip positioning may affect ignition reliability.
The gap should never be adjusted arbitrarily.
4. Electrode Tip Wear
Repeated operating cycles and exposure to combustion conditions may affect the electrode tip.
A suitable maintenance programme should include inspection of the electrode condition and ignition assembly.
Selecting Ignition Electrodes for OEM Manufacturing
For OEMs purchasing ignition electrodes in quantity, consistent specifications are especially important.
Before finalising a model, confirm:
Ceramic material and dimensions.
Metal rod material and diameter.
Electrode tip profile.
Mounting design.
High-voltage connection.
Application temperature conditions.
Required dimensional tolerances.
Quantity and procurement schedule.
For production applications, representative samples and specification approval can be useful before placing a larger order.
Premium Burner Ignition Electrodes in Ahmedabad, India
Mahalaxmi Sales supplies straight burner ignition electrodes and industrial burner spare parts for OEMs, engineering contractors and equipment maintenance teams.
Our listed straight-electrode range includes ceramic and metal rod configurations designed for specified industrial burner applications.
Key Product Specifications
97% alumina ceramic insulation.
Kanthal A-1 FeCrAl rod material.
Nominal 3 mm rod diameter.
Multiple ceramic diameters and lengths.
Ceramic temperature specification up to 1100°C.
Dimensional variants for different burner designs.
Product selection must be based on the complete application requirements.
We handle enquiries from Ahmedabad, Gujarat and industrial buyers across India.
Explore Individual Electrode Models
Burner Ignition Electrode 10 × 150 × 150 mm
Burner Ignition Electrode 12 × 200 × 150 mm
Burner Ignition Electrode 14 × 200 × 150 mm
For bulk OEM enquiries, share your drawings, dimensions, application details and quantity.
Frequently Asked Questions
What does 12 × 200 × 150 mean in a burner ignition electrode?
For the straight-electrode naming convention used in this product range, it refers to 12 mm ceramic outer diameter, 200 mm ceramic length and 150 mm exposed metal rod length.
Which ceramic material is used in Mahalaxmi Sales straight ignition electrodes?
The listed straight-electrode products specify 97% alumina ceramic.
What is the metal rod material?
The listed straight-electrode products specify Kanthal A-1, a ferritic FeCrAl alloy.
Can one ignition electrode size replace another?
Not automatically. All relevant dimensions, connections and application requirements must be compatible.
Are industrial burner ignition electrodes available for OEM requirements?
Mahalaxmi Sales handles OEM and industrial purchasing enquiries. Buyers should provide specifications, drawings and quantities for evaluation.
Conclusion
Selecting the correct burner ignition electrode requires attention to ceramic diameter, insulation length, exposed metal rod length, terminal design and tip geometry.
For OEM manufacturers and maintenance teams, a correctly specified electrode helps support reliable ignition and appropriate mechanical integration.
Looking for precision burner ignition electrodes for your industrial equipment?
Contact Mahalaxmi Sales — Ahmedabad, Gujarat, India for product and bulk purchasing enquiries.
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