The Boiler Mobrey Switch is an essential component of the Mobrey Water Level Controller, widely used in industrial steam boilers for automatic water level monitoring and control. It ensures the safe operation of the boiler by maintaining the correct water level inside the boiler drum and protecting against hazards like dry running, overheating, and boiler tube damage. The Mobrey Switch operates on a float-actuated mechanism, where the movement of the float due to rising or falling water levels actuates the switch contacts. These contacts are used to trigger alarms, cut off the fuel supply, or operate feed water pumps to maintain the desired water level.
The Mobrey Switch is robust in design, built to withstand high temperature, high-pressure conditions inside boiler applications, and is engineered to deliver long service life with minimal maintenance. It plays a critical role in ensuring operational efficiency, energy savings, and most importantly, safety compliance in line with IBR and other international standards.
Technical Highlights:
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Application: Designed for water level control in steam boilers, hot water generators, and industrial heating systems.
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Working Principle: Float-actuated displacement type switch that senses changes in water level and actuates microswitch contacts.
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Functionality:
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Controls boiler feed pumps to maintain correct water levels.
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Provides low-water level alarm & trip signal for burner cut-off.
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Prevents dry run and overheating conditions in boilers.
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Construction: Rugged cast or fabricated housing with high-quality stainless steel internals for float and lever mechanism.
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Switch Type: Snap-action microswitches with high electrical rating for reliable operation.
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Mounting: Side-mounted or top-mounted designs available for easy installation.
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Pressure & Temperature Range: Suitable for high-pressure boilers (up to 40 bar or as per model) and temperatures up to 250°C.
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Electrical Rating: Typically 5A to 15A at 250 VAC / 24 VDC (model specific).
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Safety Compliance: Manufactured in accordance with IBR (Indian Boiler Regulations) and international safety standards.
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Maintenance: Simple design requiring minimal maintenance and inspection.
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Advantages:
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Ensures boiler safety and uninterrupted operation.
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Reduces manual monitoring of water levels.
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Prevents costly damage to boiler tubes and equipment.
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Long service life with robust and reliable operation.
