How to Select a Fida Ignition Transformer: CM, PM, Output and Duty Cycle Explained
A Fida ignition transformer creates the high-voltage spark needed to ignite the fuel-air mixture inside a burner.
Models can appear similar while having different electrical outputs, grounding arrangements, duty cycles and mounting details. Selecting the correct transformer therefore requires more than identifying the Fida brand.
Understanding Fida Model Numbers
Fida Compact model names frequently contain two numbers separated by a slash, followed by letters such as CM or PM.
Examples include:
10/20 CM
10/30 CM
8/30 PM
The model designation helps identify the transformer’s electrical configuration. However, the complete nameplate must be checked because multiple voltage and duty-cycle versions may exist.
Fida Compact 10/20 CM
The Fida 10/20 CM family is commonly associated with:
230V, 50Hz supply versions
Two high-voltage outputs
2 × 5,000V secondary output
20mA secondary current
Centre-grounded configuration
The exact duty cycle depends on the complete model variation. A suffix such as “33” is normally used to identify a specified intermittent-duty version, but the physical nameplate should be treated as the final reference.
View the Fida Compact 10/20 CM 33.
Fida Compact 10/30 CM
A Fida 10/30 CM version may use the same 2 × 5,000V secondary arrangement while providing a higher secondary-current rating.
This does not make it an automatic upgrade for a 10/20 model. The burner manufacturer’s specification, electrode arrangement, ignition-control timing and duty cycle must still be matched.
View the Fida Compact 10/30 CM.
Fida Compact 8/30 PM
The Fida 8/30 PM family uses a different secondary and grounding configuration from CM models.
Fida documentation lists selected 8/30 PM versions with:
230V, 50Hz supply
One 8,000V secondary output
30mA secondary current
Pole-grounded arrangement
View the Fida Compact 8/30 PM.
What Do CM and PM Mean?
CM generally indicates a centre-grounded secondary arrangement. PM indicates a pole-grounded arrangement.
These designs are not automatically interchangeable. The burner’s electrode configuration and grounding system must correspond to the transformer.
Changing between CM and PM without checking the burner circuit can result in improper spark formation or unsafe installation.
Why Duty Cycle Matters
Duty cycle defines how long the transformer can remain energised within a specified period.
Common arrangements include:
Intermittent ignition during burner startup
Extended ignition for particular sequences
Continuous-duty operation
A transformer with a higher current rating is not necessarily suitable for continuous ignition. The published duty cycle and ambient-temperature limits must be respected.
Other Fida Models
Mahalaxmi Sales also lists larger ignition transformers such as:
Fida MOD.26/35
Fida MOD.28/35
These products should be selected independently using their complete specifications and burner requirements.
Fida Transformer Selection Checklist
Before ordering, confirm:
Complete transformer model
Supply voltage
Frequency
Primary current
Secondary voltage
Secondary current
CM or PM configuration
One-pole or two-pole arrangement
Duty cycle
High-voltage cable connections
Primary-cable position
Mounting dimensions
Do not select a replacement using only the physical size of the casing.
Buy Fida Ignition Transformers in India
Browse the Fida ignition transformer range in India.
Customers in Gujarat can also view information about Fida ignition transformers in Ahmedabad.
Send Mahalaxmi Sales a clear photograph of the existing nameplate and transformer connections for model-matching assistance.
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