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Siemens QRB1B-A068B70B cell - Burner Controls
SiemensBurner Controls

Siemens QRB1B-A068B70B cell

The Siemens QRB1B-A068B70B is a photoresistive flame sensor for burner control systems. It features a 2-wire thermoplastic cable and IP10 protection with 17 mm diameter, mounting via bracket with 36 mm hole spacing…

SKU 3G-CBM-05789

Brand
Siemens
Item
QRB1B-A068B70B cell
Category
Burner Controls
UNSPSC
40101833 — Boiler or heater igniter
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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

Technical Specifications

Siemens
type
photoresistive flame sensor
Model
QRB1B-A068B70B
cable
2-wire thermoplastic
mounting
bracket with 36 mm hole spacing
manufacturer
Siemens
protection class
IP10
protection diameter
17 mm

Technical Documents

(1)
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens QRB1B-A068B70B is a photoresistive flame sensor for burner control systems. It features a 2-wire thermoplastic cable and IP10 protection with 17 mm diameter, mounting via bracket with 36 mm hole spacing for reliable ignition monitoring in industrial combustion applications.

Frequently Asked Questions

What is the Siemens QRB1B-A068B70B flame sensor used for?

The Siemens QRB1B-A068B70B is a photoresistive flame sensor used for monitoring the visible spectrum of oil flames in burner control systems. It is typically paired with safety control units such as LAL..., LOA..., and LMO... for reliable ignition monitoring in industrial combustion applications.

What are the specifications of the Siemens QRB1B-A068B70B?

The Siemens QRB1B-A068B70B is a photoresistive flame sensor with a 17 mm diameter, IP10 protection, and a 2-wire thermoplastic cable. It mounts via a bracket with 36 mm hole spacing. The sensor is designed for use with Landis & Staefa safety controls in oil burner systems.

Where to buy the Siemens QRB1B-A068B70B in Singapore?

You can source the Siemens QRB1B-A068B70B flame sensor through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility, providing technical support for industrial combustion applications. Contact us for availability and lead time.

How to install the Siemens QRB1B-A068B70B flame sensor?

Installation must be performed by qualified personnel. Mount the sensor using the bracket with 36 mm hole spacing, ensuring the cable is routed separately from ignition cables to minimize signal interference. Always disconnect the control unit from the mains before installation and verify wiring compliance.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks
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Siemens 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.

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