- SKU:
- 77175422
- Weight:
- 3.05 LBS
- so_moq:
- 1
- so_qi:
- 1
- Estimated Special Order Ship Date:
- Special Order (ships approximately 4-5 weeks)
- Special Order Available:
- Increments of 1
- QPO:
- 0
- MPN:
- SS300-AD-LF-12
The The Murphy Speed Switch SS300-AD-LF-12 features a trip point that is set by a potentiometer. An LED indicates when the signal source is present. A second LED turns on when the trip point is reached. An optional time delay is on board to delay operation of the relay for 2-6 seconds after the set point has been reached. The SS300 Series speed switch is intended for installation within a weatherproof enclosure to protect it from rain, dust, etc.
This model has several applications: It can be used for overspeed shutdown which shuts down the engine if RPM exceeds the preset limit. It can be used for speed sensitive pull-in/drop-out which will engage or disengage PTOs, four-wheel drives, other switch points, etc. according to the engine speed being monitored. This speed switch can also select between two pressure switch set points according to speed of the engine or transmission and thus give maximum protection to the equipment while at operating RPM and eliminate nuisance alarms when at idle. It can also be adjusted to change the speed range over which the pull-in and drop-out differential of the relay will operate. A typical application is to ensure that engine speed is above a minimum RPM before applying a load but allows a drop in speed of several hundred RPM without disconnecting the load.
PRODUCT FEATURES:
- Low frequency
- Adjustable differential
- Single set point speed switch with SPDT relay dry contact output
PRODUCT SPECIFICATIONS:
- Murphy Part No.: SS300-AD-LF-12
- Series: SS300 Series
- Voltage: 12 VDC (9-16 VDC)
- Frequency Signal:
- Minimum Input Voltage Signal: 4.5 Vrms
- Maximum Input Voltage Signal: 50 Vrms
- Maximum Current:
- Pull In: 46 mA
- Pickup Only: 10.5 mA
- Frequency Range: 25-2000 Hz.
- Reset Differential Alternator: 50-1900 Hz, Adjustable
- Output: Relay contact, SPDT, resistive load, 6 A, 30 VDC
- Time Delay: When terminal 7 is grounded, the relay operation is delayed for 2-6 seconds after RPM set point is reached
- Adjustment: 20–turn potentiometer(s)
- Temperature Range: -4° to 185°F (-20° to 85°C)
- Relative Humidity: 0 to 95% Non-condensing
- Case: Black, ABS plastic
APPLICATIONS:
- Generators
- Compressors
- Industrial Engines
- Pumps
- Vehicles
- Farm Equipment
Product Condition: NEW
