Assortment / System Description

Powers
®
Mechanical Line Voltage Controls
Powers® Electric Line Voltage Mechanical Room Thermostats
The ET 134 line voltage room thermostat is a wall mounted instrument available with exposed
or concealed set point adjustment. Models are available with Single-Pole, Single-Throw (SPST)
or Single-Pole, Double-Throw (SPDT) contact action and for standard-duty (nominal ¼ hp; 10
amps, non-inductive) applications. Rugged and reliable, these “non-powered” On-Off
thermostats provide a proven means of control in demanding heating and cooling applications.
Part Numbers: 134-1083, 134-1084, 134-1085, 134-1086
Technical Instructions
Powers® Low Temperature Detect Line Voltage Mech. Thermostats
The Electric Low Temperature Detection Cut-out and Alarm Thermostat is a remote bulb
instrument which opens an electrical circuit to stop the supply fan motor and/or closes an
outside air damper when the temperature at the sensing element falls below the setting of the
instrument. Simultaneously, it closes a circuit to indicate an alarm condition.
The ET 141 remote bulb thermostat incorporates a temperature-sensitive liquid-filled sensing
element that actuates precision snap-acting switches through a diaphragm and linkage
mechanism. The switches are Single-Pole, Double-Throw (SPDT) snap-acting type, totally
enclosed, and are suitable for low or line voltage power switching.
Part Numbers: 134-1504, 134-1510, 134-1511
Technical Instructions
(134-1504)
Technical Instructions
(134-1510, 134-1511)
Powers® Mid Range Temp Line Voltage Mechanical Thermostats
The ET 141 remote bulb thermostat incorporates a temperature-sensitive liquid-filled sensing
element that actuates precision snap-acting switches through a diaphragm and linkage
mechanism. The switches are Single-Pole, Double-Throw (SPDT) snap-acting type, totally
enclosed, and are suitable for low or line voltage power switching.
The electric surface mounted thermostat has a Single-Pole, Double-Throw (SPDT) contact
mechanism and is designed especially for mounting on pipes.
Part Numbers: 141-0520, 141-0522
Technical Instructions
(141-0520)
Technical Instructions
(141-0522)
Powers® High Temp Detect Line Voltage Mechanical Thermostats
The ET 141 remote bulb thermostat incorporates a temperature-sensitive liquid-filling sensing
element that actuates precision snap-acting switches through a diaphragm and linkage
mechanism. The switches are Single-Pole, Double-Throw (SPDT) snap-acting type, totally
enclosed, and are suitable for low or line voltage power switching.
The electric surface mounted thermostat has a Single-Pole, Double-Throw (SPDT) contact
mechanism and is designed especially for mounting on pipes.
The ET 141 high limit control thermostat is duct mounted and has a rigid bulb, bi-metal rod and
tube construction.
Part Numbers: 141-0521, 141-0522, 141-0530
Technical Instructions
(141-0521)
Technical Instructions
(141-0522)
Technical Instructions
(141-0530)
Powers® Differential Static Pressure Line Voltage Airflow Switches
The SW 141 Airflow Switch senses static differential pressure and the diaphragm operated
snap switches actuate electrical circuits. Auto reset and manual reset models are available.
Part Numbers: 141-0518, 141-0574, 141-0575
Technical Instructions