Supplier FW Murphy Model LM301, Jakarta
WWW.DISTRIBUTORALATINDUSTRI.COM | Supplier FW Murphy Model LM301, Jakarta | The FW Murphy Model LM301 is a mechanical low-pressure switch designed to provide reliable shutdown or alarm protection for engines, compressors, pumps, generators, and other industrial equipment. The switch continuously monitors lubricating oil pressure or other low-pressure media and automatically actuates an electrical contact when the pressure falls below the preset threshold.
Supplier FW Murphy Model LM301, Jakarta
The LM301 is commonly integrated into Murphy Tattletale® engine protection systems, where it functions as a critical safety device to prevent equipment damage caused by loss of oil pressure or insufficient system pressure. The switch is suitable for harsh industrial environments and offers dependable operation with minimal maintenance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | FW Murphy (Enovation Controls) |
| Model | LM301 |
| Device Type | Low Pressure Switch |
| Pressure Range | 15 PSI (103 kPa) |
| Electrical Rating | 10 A, 250 VAC |
| Switching Type | Mechanical SPDT Pressure Switch |
| Enclosure | Industrial Heavy-Duty Housing |
| Manufacturing Date | February 2006 |
| Patent No. | 5,493,086 |
Mechanical Features
- Rugged industrial construction
- Mechanical diaphragm pressure sensing
- Reliable snap-action electrical contacts
- Compact design for engine protection systems
- Corrosion-resistant metal sensing element
- Easy installation and replacement
- Long operational life
Electrical Characteristics
- Rated current: 10 Amperes
- Rated voltage: 250 VAC
- Mechanical contact output
- Compatible with engine shutdown circuits
- Suitable for alarm or shutdown applications
Operating Principle
The LM301 continuously monitors system pressure.
- During normal operation, when the pressure is above 15 psi (103 kPa), the switch remains in its normal operating state.
- If the pressure drops below the preset point, the internal mechanism changes the electrical contact state.
- The contact signal is used to activate:
- Engine shutdown
- Alarm system
- Safety interlock
- Control relay
This helps protect valuable rotating equipment from catastrophic damage due to low lubrication pressure.
Applications
The LM301 is widely used in:
- Diesel engines
- Natural gas engines
- Compressors
- Pump packages
- Generator sets
- Oil & gas production equipment
- Process skids
- Industrial machinery
- Fire pump engines
- Marine engines
Nameplate Information (Visible)
- Manufacturer: FW Murphy
- Model: LM301
- Pressure Rating: 15 PSI (103 kPa)
- Electrical Rating: 10 Amp, 250 VAC
- Manufacturing Date: 02-2006
- Patent Number: 5,493,086
Features
- Mechanical pressure sensing
- Factory-calibrated low-pressure trip point
- High electrical switching capacity (10 A @ 250 VAC)
- Fast response to pressure loss
- Rugged industrial design
- Reliable long-term operation
- Suitable for engine safety shutdown systems
- Easy maintenance and field replacement
Typical System Integration
The pressure switch is commonly installed on:
- Engine lubrication systems
- Compressor lubrication circuits
- Hydraulic systems
- Industrial pump skids
- Generator protection panels
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