Murphy TSB Specification Sheet

Direct Mount Temperature Switch
Description
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.
The construction of this instrument is the
same as our time-proven Swichgage
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.

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.
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.
**
Applications
• Engine Coolant
• Irrigation Systems
• Compressors
• Oil Field Systems
• Engine Lubrication
® . A
• Construction equipment
• Mobile Equipment
• Marine Engines
• Generators
• Electric Motors
Features
Fits most engine applications
•
• SPDT snap-switch
• Activates indicator lights, alarms or shut
down equipment
• Time-proven Swichgage construction
• Easy wiring terminal block
• Steel housing specially coated to
resist corrosion
• Trip point is factory preset to your
specifications (minimum quantities apply)
TSB-9137B page 1 of 2
Model TSB
■
Limit Switch for Critical Temperature
■
Operate Alarms or
Shutdown Equipment
■
SPDT Snap-Acting Switch
■
Fits Most Engine Applications
Specifications
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).
Shipping Dimensions: 4-3/4 x 4-3/4 x
2-5/8 in. (121 x 121 x 67 mm).
NOTE: No customer replacement parts.
TSB-9137B
Revised 04-06
Catalog Section 10
(00-02-0051)