Murphy Switch TSB User Manual

TSB-9137B  
Revised 04-06  
Catalog Section 10  
(00-02-0051)  
Direct Mount Temperature Switch  
Model TSB  
Limit Switch for Critical Temperature  
Operate Alarms or  
Shutdown Equipment  
SPDT Snap-Acting Switch  
Fits Most Engine Applications  
**  
Description  
Applications  
Engine Coolant  
Irrigation Systems  
Compressors  
Oil Field Systems  
Engine Lubrication  
Construction equipment  
Mobile Equipment  
Marine Engines  
Generators  
Specifications  
The TSB switch is a direct mount switch for  
temperature sensing. It has one limit contact  
that can be used to activate an alarm, actuate  
indicator lights or shut down equipment.  
Housing: Plated steel.  
Connections: Popular NPT and metric  
(specify).  
Diaphragm: Formed beryllium copper (heat  
treated).  
Sensing Bulb: Copper.  
Terminal Block: Three # 4-40 screws.  
Accuracy: See chart on page 2.  
Contact Rating: SPDT 3 A @ 30 VDC  
inductive.  
Maximum Temperature: 325°F (163°C).  
Factory Trip Point Setting: 210°F (99°C)  
Rising.  
Contact: Operates on rising temperature  
only.  
Shipping Weight: 10 oz (0.31 kg).  
The construction of this instrument is the  
same as our time-proven Swichgage . A  
®
precision machined brass mounting plate and  
port captures a high quality stamped  
beryllium copper diaphragm. The single-  
pole, double-throw (SPDT) snap switch is  
operated directly from the diaphragm, for  
quick acting and positive switching. Trip  
point is factory preset according to your  
specifications.  
Electric Motors  
Features  
Fits most engine applications  
SPDT snap-switch  
Activates indicator lights, alarms or shut  
Housing is weather sealed to prevent entry of  
moisture, dust, etc. A glass-filled nylon  
terminal block with quick-screw terminal  
connections gives the TSB switch a real  
advantage in industrial engine applications.  
The TSB is ideal when reading is not  
desired, but temperature is critical to  
operational efficiency.  
down equipment  
Shipping Dimensions: 4-3/4 x 4-3/4 x  
2-5/8 in. (121 x 121 x 67 mm).  
Time-proven Swichgage construction  
Easy wiring terminal block  
Steel housing specially coated to  
resist corrosion  
NOTE: No customer replacement parts.  
Trip point is factory preset to your  
specifications (minimum quantities apply)  
Intended for use in general purpose non-  
classified areas.  
**Products covered by this bulletin comply with EMC Council directive 89/336/EEC regarding  
electromagnetic compatibility except as noted.  
TSB-9137B page 1 of 2  
 

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