Siemens Relay LGB 21 550A27
Siemens LGB 21 550A27 is a burner control safety relay for gas or gas/oil burners up to 350 kW, supporting 1 or 2 stage operation with ionization probe or blue flame sensor flame detection. Ideal for industrial…
SKU 3G-CBM-05830
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
Siemens LGB 21 550A27 is a burner control safety relay for gas or gas/oil burners up to 350 kW, supporting 1 or 2 stage operation with ionization probe or blue flame sensor flame detection. Ideal for industrial heating and combustion safety applications.
Frequently Asked Questions
What is the Siemens LGB 21 550A27 burner control used for?
The Siemens LGB 21 550A27 is a safety relay for gas or gas/oil burners up to 350 kW. It controls 1 or 2 stage operation with intermittent duty, using ionization probe or blue flame sensor QRC1 for flame detection. Common in industrial heating and combustion safety systems.
What are the specifications of the Siemens LGB 21 550A27?
The Siemens LGB 21 550A27 is an intermittent-operation burner control safety relay for gas or gas/oil burners up to 350 kW. It supports 1 or 2 stage operation and flame detection via ionization probe or blue flame sensor QRC1. It is designed for low to medium power burners with or without fan.
Where to buy Siemens LGB 21 550A27 in Singapore?
3G Electric supplies the Siemens LGB 21 550A27 burner control relay to Singapore. We handle sourcing, logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this SKU.
How to install the Siemens LGB 21 550A27 burner control?
Installation must be done by qualified personnel only. Disconnect power before wiring near terminals. Use only manual force (≤10 N) on the reset button, never tools. Follow local safety regulations and verify wiring compliance. Do not reuse after a drop or impact.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens burner controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
