Is the Satronic Relay LFS1.21A2 available from 3G Electric?

Yes — 3G Electric supplies genuine Satronic products with in-stock availability on common SKUs and worldwide shipping.

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Does 3G Electric provide technical support for burner controls?

Yes, our team of experienced engineers provides full technical support including product selection, installation guidance, commissioning, and after-sales service for all burner controls we distribute.

Satronic Relay LFS1.21A2 - Burner Controls

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SatronicBurner Controls

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Satronic Relay LFS1.21A2

Satronic LFS1.21A2 is a flame safeguard relay for burner control systems, operating at 120V AC or 230V AC, 50/60 Hz with double insulation and peak leakage current of 2.7 mA. Suitable for industrial combustion safety…

SKU 3G-CBM-05854

Also listed as: REL 15190 · REL-15190

Brand

Satronic

Item

Relay LFS1.21A2

Technical Specifications

Satronic

type

Flame safeguard LFS1.21A2 

voltage

120V AC / 230V AC 

frequency

50/60 Hz 

insulation

Double insulation 

peak leakage current

2.7 mA 

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Satronic Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Used in

Common applications for Satronic

Steam boiler systems — Satronic MZ770S photocell and ZT870 transformer for flame detection and ignition control.

Industrial gas furnaces — Satronic IRD820 infrared photocell and control modules for continuous flame supervision during high-temperature processes.

Oil and gas burner retrofit — Satronic replacement photocell connectors and transformers for upgrading legacy burner safety systems.

Commercial heating equipment — Satronic burner control assemblies in air heaters and unit heaters for building HVAC systems.

Process heater automation — Satronic flame-fail relays and photocell harnesses in thermal-oil and hot-water heating loops.

Preventive maintenance programs — Satronic spare-parts kits stocked for scheduled photocell and transformer replacement in high-availability industrial facilities.

Satronic Products

3G Electric supplies Satronic burner controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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