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THERMOSTATS & CONTROLS
THERMOSTATS|LINE VOLTAGE
MS26 MD26 M601W M602W M601TPW M602TPW M611W
M612W
ACTION Snap Action Snap Action Snap Action Snap Action
TYPE SPST DPST SPST DPST SPST DPST SPST
DPST
WATT RATING Model MD26 has Positive OFF Model M602W has Positive OFF Model M602TPW has Positive OFF Model M612W has Positive OFF
120V 22A 22A 22A 22A
208V 22A 22A 22A 22A
240V 22A 22A 22A 22A
277V 18A 18A 18A 18A
PILOT DUTY No Yes 125VA Yes 125VA Yes 125VA
TEMP. RANGE (ºF) 50ºF to 80ºF 45ºF to 75ºF 45ºF to 75ºF 45ºF to 75ºF
DIFFERENTIAL +/- 5ºF +/- 4ºF +/- 4ºF +/- 2 1/2ºF
FEATURES
These economy thermostats
are the snap action type that
are used in apartment construction.
Good thermostat for its value.
Ideal for radiant cove heaters
and baseboard.
These bi-metal snap-action
thermostats are sensitive.
Large knob allow for
easy adjustment.
Same as M601W and M602W
except the cover mounting
cover offer tamper-proof feature.
Built-in heat anticipator
assures closer control of
room temperature.
M600MTP M600S T100 T200 WR651
WR661
ACTION Modulation (2-stage) Simultaneous switching (double ckt) Snap Action with Heat Anticipator Creep (Hydraulic) Action
TYPE DPST SPST DPST SPST
DPST
WATT RATING
120V 22A 22A 22A 22A
208V 22A 22A 22A 22A
240V 22A 22A 22A 22A
277V 18A 18A 18A na
PILOT DUTY Yes 125VA Yes 125VA Yes 125VA No
TEMP. RANGE (ºF) 50ºF to 80ºF 50ºF to 80ºF 50ºF to 90ºF 40ºF to 85ºF
DIFFERENTIAL Accuracy: Within 3ºF of setpoint Accuracy: Within 3ºF of setpoint +/- 2 1/2ºF +/- 2ºF
FEATURES
One thermostat controls two separate
heating circuits and reduces input during
light load periods. Second stage activates
when temperature drops to approx.
1-1/2ºF below the first stage turn-ON
temperature.
Simultaneous control of two heating loads.
Used where the total load slightly exceeds
capacity of a single switch, where two
thermostats are impractical. Both switches
are calibrated to operate at approx. the
same temperature.
Line voltage thermostat with everything;
Performance, reliability, durability, and
a large knob. Built-in heat anticipation
assures close temperature regulation.
Large knob for easy rotation.
Extra-sensitive element in control
knob senses radiant heat as well
as air temperature for ultimate
control. May cause slight radio or
television interference in outlying
fringe areas.